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SplObjectStorage::attach

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

SplObjectStorage::attachAdds an object in the storage

說(shuō)明

public SplObjectStorage::attach(object $object, mixed $info = null): void

Adds an object inside the storage, and optionally associate it to some data.

參數

object

The object to add.

info

The data to associate with the object.

返回值

沒(méi)有返回值。

范例

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]);

?>

以上例程的輸出類(lèi)似于:

NULL
string(5) "hello"

參見(jiàn)

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