You can call:
$storage->removeAll($storage);
To remove all elements.
(PHP 5 >= 5.3.0, PHP 7)
SplObjectStorage::removeAll — Removes objects contained in another storage from the current storage
Removes objects contained in another storage from the current storage.
storageThe storage containing the elements to remove.
没有返回值。
Example #1 SplObjectStorage::removeAll() example
<?php
$o1 = new StdClass;
$o2 = new StdClass;
$a = new SplObjectStorage();
$a[$o1] = "foo";
$b = new SplObjectStorage();
$b[$o1] = "bar";
$b[$o2] = "gee";
var_dump(count($b));
$b->removeAll($a);
var_dump(count($b));
?>
以上例程的输出类似于：
int(2) int(1)
You can call:
$storage->removeAll($storage);
To remove all elements.