PHP Manual
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`break`

break ends execution of the current for, foreach while, do..while or switch structure.

break accepts an optional numeric argument which tells it how many nested enclosing structures are to be broken out of.


<?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;
    }
}
?>