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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@28866 c90b9560-bf6c-de11-be94-00142212c4b1
682 lines
22 KiB
XML
682 lines
22 KiB
XML
<reference id="ref.mssql">
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<title>Microsoft SQL Server functions</title>
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<titleabbrev>MS SQL Server</titleabbrev>
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<refentry id="function.mssql-close">
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<refnamediv>
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<refname>mssql_close</refname>
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<refpurpose>Close MS SQL Server connection</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_close</function></funcdef>
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<paramdef>int
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<parameter><optional>link_identifier</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns: true on success, false on error.
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</para>
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<para>
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<function>Mssql_close</function> closes the link to a MS SQL
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Server database that's associated with the specified link
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identifier. If the link identifier isn't specified, the last
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opened link is assumed.
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</para>
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<para>
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Note that this isn't usually necessary, as non-persistent open
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links are automatically closed at the end of the script's
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execution.
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</para>
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<para>
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<function>Mssql_close</function> will not close persistent links
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generated by <function>mssql_pconnect</function>.
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</para>
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<para>
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See also: <function>mssql_connect</function>,
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<function>mssql_pconnect</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-connect">
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<refnamediv>
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<refname>mssql_connect</refname>
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<refpurpose>Open MS SQL server connection</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_connect</function></funcdef>
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<paramdef>string
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<parameter><optional>servername</optional></parameter>
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</paramdef>
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<paramdef>string
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<parameter><optional>username</optional></parameter>
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</paramdef>
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<paramdef>string
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<parameter><optional>password</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns: A positive MS SQL link identifier on success, or false
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on error.
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</para>
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<para>
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<function>Mssql_connect</function> establishes a connection to a
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MS SQL server. The servername argument has to be a valid
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servername that is defined in the 'interfaces' file.
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</para>
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<para>
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In case a second call is made to
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<function>mssql_connect</function> with the same arguments, no
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new link will be established, but instead, the link identifier of
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the already opened link will be returned.
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</para>
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<para>
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The link to the server will be closed as soon as the execution of
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the script ends, unless it's closed earlier by explicitly calling
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<function>mssql_close</function>.
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</para>
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<para>
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See also <function>mssql_pconnect</function>,
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<function>mssql_close</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-data-seek">
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<refnamediv>
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<refname>mssql_data_seek</refname>
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<refpurpose>Move internal row pointer</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_data_seek</function></funcdef>
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<paramdef>int <parameter>result_identifier</parameter></paramdef>
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<paramdef>int <parameter>row_number</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns: true on success, false on failure.
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</para>
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<para>
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<function>Mssql_data_seek</function> moves the internal row
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pointer of the MS SQL result associated with the specified result
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identifier to point to the specified row number. The next call
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to <function>mssql_fetch_row</function> would return that row.
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</para>
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<para>
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See also: <function>mssql_data_seek</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-fetch-array">
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<refnamediv>
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<refname>mssql_fetch_array</refname>
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<refpurpose>Fetch row as array</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_fetch_array</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns: An array that corresponds to the fetched row, or false
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if there are no more rows.
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</para>
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<para>
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<function>Mssql_fetch_array</function> is an extended version of
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<function>mssql_fetch_row</function>. In addition to storing the
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data in the numeric indices of the result array, it also stores
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the data in associative indices, using the field names as keys.
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</para>
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<para>
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An important thing to note is that using
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<function>mssql_fetch_array</function> is NOT significantly
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slower than using <function>mssql_fetch_row</function>, while it
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provides a significant added value.
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</para>
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<para>
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For further details, also see
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<function>mssql_fetch_row</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-fetch-field">
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<refnamediv>
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<refname>mssql_fetch_field</refname>
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<refpurpose>Get field information</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>object <function>mssql_fetch_field</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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<paramdef>int
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<parameter><optional>field_offset</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns an object containing field information.
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</para>
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<para>
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<function>Mssql_fetch_field</function> can be used in order to
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obtain information about fields in a certain query result. If
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the field offset isn't specified, the next field that wasn't yet
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retrieved by <function>mssql_fetch_field</function> is retrieved.
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</para>
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<para>
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The properties of the object are:
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</para>
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<itemizedlist>
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<listitem>
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<simpara>
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name - column name. if the column is a result of a function,
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this property is set to computed#N, where #N is a serial
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number.
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</simpara>
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</listitem>
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<listitem>
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<simpara>
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column_source - the table from which the column was taken
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</simpara>
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</listitem>
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<listitem>
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<simpara>
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max_length - maximum length of the column
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</simpara>
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</listitem>
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<listitem>
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<simpara>
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numeric - 1 if the column is numeric
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</simpara></listitem>
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</itemizedlist>
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<para>
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See also <function>mssql_field_seek</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-fetch-object">
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<refnamediv>
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<refname>mssql_fetch_object</refname>
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<refpurpose>Fetch row as object</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_fetch_object</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns: An object with properties that correspond to the fetched
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row, or false if there are no more rows.
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</para>
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<para>
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<function>Mssql_fetch_object</function> is similar to
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<function>mssql_fetch_array</function>, with one difference - an
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object is returned, instead of an array. Indirectly, that means
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that you can only access the data by the field names, and not by
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their offsets (numbers are illegal property names).
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</para>
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<para>
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Speed-wise, the function is identical to
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<function>mssql_fetch_array</function>, and almost as quick as
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<function>mssql_fetch_row</function> (the difference is
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insignificant).
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</para>
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<para>
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See also: <function>mssql_fetch-array</function> and
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<function>mssql_fetch-row</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-fetch-row">
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<refnamediv>
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<refname>mssql_fetch_row</refname>
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<refpurpose>Get row as enumerated array</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>array <function>mssql_fetch_row</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Returns: An array that corresponds to the fetched row, or false
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if there are no more rows.
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</para>
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<para>
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<function>Mssql_fetch_row</function> fetches one row of data from
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the result associated with the specified result identifier. The
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row is returned as an array. Each result column is stored in an
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array offset, starting at offset 0.
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</para>
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<para>
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Subsequent call to <function>mssql_fetch_rows</function> would
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return the next row in the result set, or false if there are no
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more rows.
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</para>
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<para>
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See also: <function>mssql_fetch_array</function>,
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<function>mssql_fetch_object</function>,
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<function>mssql_data_seek</function>,
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<function>mssql_fetch_lengths</function>, and
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<function>mssql_result</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-field-length">
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<refnamediv>
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<refname>mssql_field_length</refname>
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<refpurpose>Get the length of a field</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_field_length</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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<paramdef>int
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<parameter><optional>offset</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-field-name">
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<refnamediv>
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<refname>mssql_field_name</refname>
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<refpurpose>Get the name of a field</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_field_name</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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<paramdef>int
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<parameter><optional>offset</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-field-seek">
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<refnamediv>
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<refname>mssql_field_seek</refname>
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<refpurpose>Set field offset</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_field_seek</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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<paramdef>int <parameter>field_offset</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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Seeks to the specified field offset. If the next call to
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<function>mssql_fetch_field</function> won't include a field
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offset, this field would be returned.</para>
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<para></para>
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<para>
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See also: <function>mssql_fetch_field</function>.</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-field-type">
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<refnamediv>
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<refname>mssql_field_type</refname>
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<refpurpose>Get the type of a field</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>string <function>mssql_field_type</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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<paramdef>int
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<parameter><optional>offset</optional></parameter>
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</paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-free-result">
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<refnamediv>
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<refname>mssql_free_result</refname>
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<refpurpose>Free result memory</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_free_result</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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<function>mssql_free_result</function> only needs to be called
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if you are worried about using too much memory while your script
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is running. All result memory will automatically be freed when
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the script ends. You may call <function>mssql_free_result</function>
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with the result identifier as an argument and the associated
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result memory will be freed.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-get-last-message">
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<refnamediv>
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<refname>mssql_get_last_message</refname>
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<refpurpose>
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Returns the last message from server (over
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min_message_severity?)
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>string
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<function>mssql_get_last_message</function>
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</funcdef>
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<paramdef>void <parameter></parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-min-error-severity">
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<refnamediv>
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<refname>mssql_min_error_severity</refname>
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<refpurpose>Sets the lower error severity</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void
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<function>mssql_min_error_severity</function>
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</funcdef>
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<paramdef>int <parameter>severity</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-min-message-severity">
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<refnamediv>
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<refname>mssql_min_message_severity</refname>
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<refpurpose>Sets the lower message severity</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void
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<function>mssql_min_message_severity</function>
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</funcdef>
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<paramdef>int <parameter>severity</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-num-fields">
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<refnamediv>
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<refname>mssql_num_fields</refname>
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<refpurpose>Get number of fields in result</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_num_fields</function></funcdef>
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<paramdef>int <parameter>result</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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<function>Mssql_num_fields</function> returns the number of
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fields in a result set.
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</para>
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<para>
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See also: <function>mssql_db_query</function>,
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<function>mssql_query</function>,
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<function>mssql_fetch_field</function>, and
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<function>mssql_num_rows</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-num-rows">
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<refnamediv>
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<refname>mssql_num_rows</refname>
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<refpurpose>Get number of rows in result</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>mssql_num_rows</function></funcdef>
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<paramdef>string <parameter>result</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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<para>
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<function>Mssql_num_rows</function> returns the number of rows in
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a result set.
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</para>
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<para>
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See also: <function>mssql_db_query</function>,
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<function>mssql_query</function>, and
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<function>mssql_fetch_row</function>.
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</para>
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</refsect1>
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</refentry>
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<refentry id="function.mssql-pconnect">
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<refnamediv>
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<refname>mssql_pconnect</refname>
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<refpurpose>Open persistent MS SQL connection</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>int <function>mssql_pconnect</function></funcdef>
|
|
<paramdef>string
|
|
<parameter><optional>servername</optional></parameter>
|
|
</paramdef>
|
|
<paramdef>string
|
|
<parameter><optional>username</optional></parameter>
|
|
</paramdef>
|
|
<paramdef>string
|
|
<parameter><optional>password</optional></parameter>
|
|
</paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<para>
|
|
Returns: A positive MS SQL persistent link identifier on success,
|
|
or false on error.
|
|
</para>
|
|
<para>
|
|
<function>Mssql_pconnect</function> acts very much like
|
|
<function>mssql_connect</function> with two major differences.
|
|
</para>
|
|
<para>
|
|
First, when connecting, the function would first try to find a
|
|
(persistent) link that's already open with the same host,
|
|
username and password. If one is found, an identifier for it
|
|
will be returned instead of opening a new connection.
|
|
</para>
|
|
<para>
|
|
Second, the connection to the SQL server will not be closed when
|
|
the execution of the script ends. Instead, the link will remain
|
|
open for future use (<function>mssql_close</function> will not
|
|
close links established by <function>mssql_pconnect</function>).
|
|
</para>
|
|
<para>
|
|
This type of links is therefore called 'persistent'.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<refentry id="function.mssql-query">
|
|
<refnamediv>
|
|
<refname>mssql_query</refname>
|
|
<refpurpose>Send MS SQL query</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>int <function>mssql_query</function></funcdef>
|
|
<paramdef>string <parameter>query</parameter></paramdef>
|
|
<paramdef>int
|
|
<parameter><optional>link_identifier</optional></parameter>
|
|
</paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<para>
|
|
Returns: A positive MS SQL result identifier on success, or false
|
|
on error.
|
|
</para>
|
|
<para>
|
|
<function>Mssql_query</function> sends a query to the currently
|
|
active database on the server that's associated with the
|
|
specified link identifier. If the link identifier isn't
|
|
specified, the last opened link is assumed. If no link is open,
|
|
the function tries to establish a link as if
|
|
<function>mssql_connect</function> was called, and use it.
|
|
</para>
|
|
<para>
|
|
See also: <function>mssql_db_query</function>,
|
|
<function>mssql_select_db</function>, and
|
|
<function>mssql_connect</function>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<refentry id="function.mssql-result">
|
|
<refnamediv>
|
|
<refname>mssql_result</refname>
|
|
<refpurpose>Get result data</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>int <function>mssql_result</function></funcdef>
|
|
<paramdef>int <parameter>result</parameter></paramdef>
|
|
<paramdef>int <parameter>i</parameter></paramdef>
|
|
<paramdef>mixed <parameter>field</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<para>
|
|
<function>Mssql_result</function> returns the contents of one
|
|
cell from a MS SQL result set. The field argument can be the
|
|
field's offset, the field's name or the field's table dot
|
|
field's name (tablename.fieldname). If the column name has been
|
|
aliased ('select foo as bar from...'), it uses the alias instead of
|
|
the column name.
|
|
</para>
|
|
<para>
|
|
When working on large result sets, you should consider using one
|
|
of the functions that fetch an entire row (specified below). As
|
|
these functions return the contents of multiple cells in one
|
|
function call, they're MUCH quicker than
|
|
<function>mssql_result</function>. Also, note that specifying a
|
|
numeric offset for the field argument is much quicker than
|
|
specifying a fieldname or tablename.fieldname argument.
|
|
</para>
|
|
<para>
|
|
Recommended high-performance alternatives:
|
|
<function>mssql_fetch_row</function>,
|
|
<function>mssql_fetch_array</function>, and
|
|
<function>mssql_fetch_object</function>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
<refentry id="function.mssql-select-db">
|
|
<refnamediv>
|
|
<refname>mssql_select_db</refname>
|
|
<refpurpose>Select MS SQL database</refpurpose>
|
|
</refnamediv>
|
|
<refsect1>
|
|
<title>Description</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>int <function>mssql_select_db</function></funcdef>
|
|
<paramdef>string <parameter>database_name</parameter></paramdef>
|
|
<paramdef>int
|
|
<parameter><optional>link_identifier</optional></parameter>
|
|
</paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<para> Returns: true on success, false on error
|
|
</para>
|
|
<para>
|
|
<function>Mssql_select_db</function> sets the current active
|
|
database on the server that's associated with the specified link
|
|
identifier. If no link identifier is specified, the last opened
|
|
link is assumed. If no link is open, the function will try to
|
|
establish a link as if <function>mssql_connect</function> was
|
|
called, and use it.
|
|
</para>
|
|
<para>
|
|
Every subsequent call to <function>mssql_query</function> will be
|
|
made on the active database.
|
|
</para>
|
|
<para> See also:
|
|
<function>mssql_connect</function>,
|
|
<function>mssql_pconnect</function>, and
|
|
<function>mssql_query</function>
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|
|
|
|
</reference>
|
|
|
|
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|
|
Local variables:
|
|
mode: sgml
|
|
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|
sgml-shorttag:t
|
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sgml-minimize-attributes:nil
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sgml-indent-step:1
|
|
sgml-indent-data:t
|
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sgml-parent-document:nil
|
|
sgml-default-dtd-file:"../../manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
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End:
|
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-->
|