(PHP 5 >= 5.2.2, PHP 7, PHP 8)
SplObjectStorage::serialize — Serializes the storage
此函数没有参数。
A string representing the storage.
示例 #1 SplObjectStorage::serialize() example
<?php
$s = new SplObjectStorage;
$o = new stdClass;
$s[$o] = "data";
echo $s->serialize()."\n";
?>以上示例的输出类似于：
x:i:1;O:8:"stdClass":0:{},s:4:"data";;m:a:0:{}