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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 325967 $ -->
<sect1 xml:id="control-structures.break" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<title><literal>break</literal></title>
<?phpdoc print-version-for="break"?>
<simpara>
<literal>break</literal> ends execution of the current
<literal>for</literal>, <literal>foreach</literal>,
<literal>while</literal>, <literal>do-while</literal> or
<literal>switch</literal> structure.
</simpara>
<simpara>
<literal>break</literal> accepts an optional numeric argument
which tells it how many nested enclosing structures are to be
broken out of.
</simpara>
<para>
<informalexample>
<programlisting role="php">
<![CDATA[
<?php
$arr = array('one', 'two', 'three', 'four', 'stop', 'five');
while (list(, $val) = each($arr)) {
if ($val == 'stop') {
break; /* You could also write 'break 1;' here. */
}
echo "$val<br />\n";
}
/* Using the optional argument. */
$i = 0;
while (++$i) {
switch ($i) {
case 5:
echo "At 5<br />\n";
break 1; /* Exit only the switch. */
case 10:
echo "At 10; quitting<br />\n";
break 2; /* Exit the switch and the while. */
default:
break;
}
}
?>
]]>
</programlisting>
</informalexample>
</para>
<para>
<table>
<title>Changelog for <literal>break</literal></title>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>5.4.0</entry>
<entry>
<literal>break 0;</literal> is no longer valid. In previous versions it was interpreted
the same as <literal>break 1;</literal>.
</entry>
</row>
<row>
<entry>5.4.0</entry>
<entry>
Removed the ability to pass in variables (e.g., <literal>$num = 2; break $num;</literal>)
as the numerical argument.
</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</sect1>
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