SplObjectStorage::attach()
(PHP 5 >= 5.1.0, PHP 7)
Adds an object in the storage
说明
public SplObjectStorage::attach(object $object[,mixed $data=NULL
] ): void
Adds an object inside the storage, and optionally associate it to some data.
参数
- $object
The object to add.
- $data
The data to associate with the object.
返回值
没有返回值。
范例
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"
更新日志
版本 | 说明 |
---|---|
5.3.0 | Added the $data parameter. |
参见
- SplObjectStorage::detach() Removes an object from the storage
- SplObjectStorage::offsetSet() Associates data to an object in the storage