break
(PHP 4, PHP 5)
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;
}
}
?>
| Version | Description |
|---|---|
| 5.4.0 | break 0; is no longer valid. In previous versions it was interpreted the same as break 1;. |
| 5.4.0 | Removed the ability to pass in variables (e.g., $num = 2; break $num;) as the numerical argument. |
Коментарии
Here is a simple "break" usage example. In this example i use "break" to stop the execution of a php foreach statement of an array as i step through the array using the php "next" command.
<?php
foreach($example_array as $key => $value)
{
if( (int) $value == 1)
{
break;
}else{
next($example_array);
}
}
?>