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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.11 $ -->
<refentry id="function.sybase-set-message-handler">
<refnamediv>
<refname>sybase_set_message_handler</refname>
<refpurpose>Sets the handler called when a server message is raised</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>bool</type><methodname>sybase_set_message_handler</methodname>
<methodparam><type>callback</type><parameter>handler</parameter></methodparam>
<methodparam choice="opt"><type>resource</type><parameter>connection</parameter></methodparam>
</methodsynopsis>
<para>
<function>sybase_set_message_handler</function> sets a user function to
handle messages generated by the server. You may specify the name of a
global function, or use an array to specify an object reference and a
method name.
</para>
&sybase.ct.only;
<para>
The handler expects five arguments in the following order: message
number, severity, state, line number and description. The first four are
integers. The last is a string. If the function returns &false;, PHP
generates an ordinary error message.
</para>
<para>
&return.success;
</para>
<note>
<para>
The <parameter>connection</parameter> parameter was added in
PHP 4.3.5.
</para>
</note>
<para>
<example>
<title><function>sybase_set_message_handler</function> callback function</title>
<programlisting role="php">
<![CDATA[
<?php
function msg_handler($msgnumber, $severity, $state, $line, $text)
{
var_dump($msgnumber, $severity, $state, $line, $text);
}
sybase_set_message_handler('msg_handler');
?>
]]>
</programlisting>
</example>
<example>
<title><function>sybase_set_message_handler</function> callback to a class</title>
<programlisting role="php">
<![CDATA[
<?php
class Sybase {
function handler($msgnumber, $severity, $state, $line, $text)
{
var_dump($msgnumber, $severity, $state, $line, $text);
}
}
$sybase= new Sybase();
sybase_set_message_handler(array($sybase, 'handler'));
?>
]]>
</programlisting>
</example>
<example>
<title><function>sybase_set_message_handler</function> unhandled messages</title>
<programlisting role="php">
<![CDATA[
<?php
// Return FALSE from this function to indicate you can't handle
// this. The error is printed out as a warning, the way you're used
// to it if there is no handler installed.
function msg_handler($msgnumber, $severity, $state, $line, $text)
{
if (257 == $msgnumber) {
return false;
}
var_dump($msgnumber, $severity, $state, $line, $text);
}
sybase_set_message_handler('msg_handler');
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
</refentry>
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