(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplObjectStorage::detach — Removes an object from the storage
没有返回值。
示例 #1 SplObjectStorage::detach() example
<?php
$o = new stdClass;
$s = new SplObjectStorage();
$s->attach($o);
var_dump(count($s));
$s->detach($o);
var_dump(count($s));
?>以上示例的输出类似于：
int(1) int(0)