File: break.xml

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->

<sect1 xml:id="control-structures.break" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <title>break</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. The default value is <literal>1</literal>, only
  the immediate enclosing structure is broken out of.
 </simpara>
 <para>
  <informalexample>
   <programlisting role="php">
<![CDATA[
<?php
$arr = array('one', 'two', 'three', 'four', 'stop', 'five');
foreach ($arr as $val) {
    if ($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>

</sect1>

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