mirror of
https://github.com/sigmasternchen/php-doc-en
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96c9d88bad
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@297028 c90b9560-bf6c-de11-be94-00142212c4b1
128 lines
3.6 KiB
XML
128 lines
3.6 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.sqlite-fetch-single" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>sqlite_fetch_single</refname>
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<refname>SQLiteResult->fetchSingle</refname>
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<refname>SQLiteUnbuffered->fetchSingle</refname>
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<refpurpose>Fetches the first column of a result set as a string</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>string</type><methodname>sqlite_fetch_single</methodname>
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<methodparam><type>resource</type><parameter>result</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>decode_binary</parameter><initializer>true</initializer></methodparam>
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</methodsynopsis>
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<para>Object oriented style (method):</para>
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<classsynopsis>
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<ooclass><classname>SQLiteResult</classname></ooclass>
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<methodsynopsis>
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<type>string</type><methodname>fetchSingle</methodname>
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<methodparam choice="opt"><type>bool</type><parameter>decode_binary</parameter><initializer>true</initializer></methodparam>
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</methodsynopsis>
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</classsynopsis>
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<classsynopsis>
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<ooclass><classname>SQLiteUnbuffered</classname></ooclass>
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<methodsynopsis>
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<type>string</type><methodname>fetchSingle</methodname>
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<methodparam choice="opt"><type>bool</type><parameter>decode_binary</parameter><initializer>true</initializer></methodparam>
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</methodsynopsis>
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</classsynopsis>
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<para>
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<function>sqlite_fetch_single</function> is identical to
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<function>sqlite_fetch_array</function> except that it returns the value
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of the first column of the rowset.
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</para>
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<para>
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This is the most optimal way to retrieve data when you are only
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interested in the values from a single column of data.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>result</parameter></term>
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<listitem>
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<para>
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The SQLite result resource. This parameter is not required when using
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the object-oriented method.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>decode_binary</parameter></term>
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<listitem>
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&sqlite.decode-bin;
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns the first column value, as a string.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>A <function>sqlite_fetch_single</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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if ($dbhandle = sqlite_open('mysqlitedb', 0666, $sqliteerror)) {
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$sql = "SELECT id FROM sometable WHERE id = 42";
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$res = sqlite_query($dbhandle, $sql);
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if (sqlite_num_rows($res) > 0) {
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echo sqlite_fetch_single($res); // 42
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}
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sqlite_close($dbhandle);
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>sqlite_fetch_array</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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