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irretating. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@117309 c90b9560-bf6c-de11-be94-00142212c4b1
135 lines
4.7 KiB
XML
135 lines
4.7 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.6 $ -->
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<!-- splitted from ./en/functions/mysql.xml, last change in rev 1.2 -->
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<refentry id="function.mysql-connect">
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<refnamediv>
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<refname>mysql_connect</refname>
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<refpurpose>Open a connection to a MySQL Server</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>resource</type><methodname>mysql_connect</methodname>
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<methodparam choice="opt"><type>string</type><parameter>
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server
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</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>
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username
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</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>
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password
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</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>
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new_link
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</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>
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client_flags
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</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns a MySQL link identifier on success, or &false; on failure.
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</para>
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<para>
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<function>mysql_connect</function> establishes a connection
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to a MySQL server. The following defaults are assumed for
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missing optional parameters: <parameter>server</parameter> =
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'localhost:3306', <parameter>username</parameter> = name of the
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user that owns the server process and
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<parameter>password</parameter> = empty password.
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</para>
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<para>
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The <parameter>server</parameter> parameter can also include a port
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number. eg. "hostname:port" or a path to a local socket
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eg. ":/path/to/socket" for the localhost.
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<note>
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<para>
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Whenever you specify "localhost" or
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"localhost:port" as server, the MySQL client library will
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override this and try to connect to a local socket (named pipe on
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Windows). If you want to use TCP/IP, use "127.0.0.1"
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instead of "localhost". If the MySQL client library tries to
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connect to the wrong local socket, you should set the correct path as
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mysql.default_host in your PHP configuration and leave the server field
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blank.
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</para>
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<para>
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Support for ":port" was added in PHP 3.0B4.
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</para>
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<para>
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Support for ":/path/to/socket" was added in
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PHP 3.0.10.
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</para>
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<para>
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You can suppress the error message on failure by prepending
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a <link linkend="language.operators.errorcontrol">@</link>
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to the function name.
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</para>
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</note>
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</para>
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<para>
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If a second call is made to <function>mysql_connect</function>
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with the same arguments, no new link will be established, but
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instead, the link identifier of the already opened link will be
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returned. The <parameter>new_link</parameter> parameter modifies this
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behavior and makes <function>mysql_connect</function> always open
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a new link, even if <function>mysql_connect</function> was called
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before with the same parameters. The <parameter>client_flags</parameter>
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parameter can be a combination of the constants
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MYSQL_CLIENT_COMPRESS, MYSQL_CLIENT_IGNORE_SPACE or
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MYSQL_CLIENT_INTERACTIVE.
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</para>
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<note>
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<para>
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The <parameter>new_link</parameter> parameter became available
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in PHP 4.2.0
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</para>
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<para>
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The <parameter>client_flags</parameter> parameter became available in
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PHP 4.3.0
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</para>
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</note>
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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>mysql_close</function>.
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</para>
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<example>
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<title>MySQL connect example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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$link = mysql_connect("localhost", "mysql_user", "mysql_password")
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or die("Could not connect: " . mysql_error());
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print ("Connected successfully");
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mysql_close($link);
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?>
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]]>
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</programlisting>
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</example>
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<para> See also
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<function>mysql_pconnect</function> and
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<function>mysql_close</function>.
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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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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../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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