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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.22 $ -->
<!-- Purpose: database.vendors -->
<!-- Membership: bundled, external -->
<reference id="ref.mysql">
<title>MySQL Functions</title>
<titleabbrev>MySQL</titleabbrev>
<partintro>
<section id="mysql.intro">
&reftitle.intro;
<para>
These functions allow you to access MySQL database servers.
More information about MySQL can be found at <ulink
url="&url.mysql;">&url.mysql;</ulink>.
</para>
<para>
Documentation for MySQL can be found at <ulink
url="&url.mysql.docs;">&url.mysql.docs;</ulink>.
</para>
</section>
<section id="mysql.requirements">
&reftitle.required;
<para>
In order to have these functions available, you must compile PHP with
MySQL support.
</para>
</section>
&reference.mysql.configure;
&reference.mysql.ini;
<section id="mysql.resources">
&reftitle.resources;
<para>
There are two resource types used in the MySQL module. The first one
is the link identifier for a database connection, the second a resource
which holds the result of a query.
</para>
</section>
&reference.mysql.constants;
<section id="mysql.notes">
&reftitle.notes;
<note>
<para>
Most MySQL functions accept <parameter>link_identifier</parameter> as
the last optional parameter. If it is not provided, last opened
connection is used. If it doesn't exist, connection is tried to
establish with default parameters defined in &php.ini;. If it is not
successful, functions return &false;.
</para>
</note>
</section>
<section id="mysql.examples">
&reftitle.examples;
<para>
This simple example shows how to connect, execute a query, print
resulting rows and disconnect from a MySQL database.
<example>
<title>MySQL extension overview example</title>
<programlisting role="php">
<![CDATA[
<?php
// Connecting, selecting database
$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password')
or die('Could not connect: ' . mysql_error());
echo 'Connected successfully';
mysql_select_db('my_database') or die('Could not select database');
// Performing SQL query
$query = 'SELECT * FROM my_table';
$result = mysql_query($query) or die('Query failed: ' . mysql_error());
// Printing results in HTML
echo "<table>\n";
while ($line = mysql_fetch_array($result, MYSQL_ASSOC)) {
echo "\t<tr>\n";
foreach ($line as $col_value) {
echo "\t\t<td>$col_value</td>\n";
}
echo "\t</tr>\n";
}
echo "</table>\n";
// Free resultset
mysql_free_result($result);
// Closing connection
mysql_close($link);
?>
]]>
</programlisting>
</example>
</para>
</section>
</partintro>
&reference.mysql.functions;
</reference>
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