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<?xml version="1.0" encoding="utf-8"?>
<refentry xml:id="pdo-mysql.getwarningcount" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>Pdo\Mysql::getWarningCount</refname>
<refpurpose>Returns the number of warnings from the last executed query</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="Pdo\\Mysql">
<modifier>public</modifier> <type>int</type><methodname>Pdo\Mysql::getWarningCount</methodname>
<void/>
</methodsynopsis>
<simpara>
Returns the number of warnings from the last executed query.
</simpara>
<note>
<simpara>
For retrieving warning messages the following SQL command can be used:
<literal>SHOW WARNINGS [limit row_count]</literal>.
</simpara>
</note>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
&no.function.parameters;
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<simpara>
Returns an <type>int</type> representing the number of warnings generated by the last query.
</simpara>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<example xml:id="pdo-mysql.getwarningcount.example.basic">
<title><methodname>Pdo\Mysql::getWarningCount</methodname> example</title>
<programlisting role="php">
<![CDATA[
<?php
$conn = PDO::connect("mysql:host=localhost;dbname=test;charset=utf8mb4", 'user', 'password');
$conn->query('SELECT 42/0');
if ($conn->getWarningCount() > 0) {
$result = $conn->query("SHOW WARNINGS");
$row = $result->fetch();
printf("%s (%d): %s\n", $row[0], $row[1], $row[2]);
}
?>
]]>
</programlisting>
&example.outputs;
<screen>
<![CDATA[
Warning (1365): Division by 0
]]>
</screen>
</example>
</refsect1>
</refentry>
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