PHP - Manual: SplObjectStorage::attach
2024-12-23
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplObjectStorage::attach — Adds an object in the storage
Adds an object inside the storage, and optionally associate it to some data.
object
The object to add.
info
The data to associate with the object.
没有返回值。
示例 #1 SplObjectStorage::attach() example
<?php
$o1 = new StdClass;
$o2 = new StdClass;
$s = new SplObjectStorage();
$s->attach($o1); // similar to $s[$o1] = NULL;
$s->attach($o2, "hello"); // similar to $s[$o2] = "hello";
var_dump($s[$o1]);
var_dump($s[$o2]);
?>
以上例程的输出类似于:
NULL string(5) "hello"
官方地址:https://www.php.net/manual/en/splobjectstorage.attach.php