Php/docs/splobjectstorage.contains

• PHP Manual
• SplObjectStorage
• Checks if the storage contains a specific object

SplObjectStorage::contains

(PHP 5 >= 5.1.0, PHP 7)

SplObjectStorage::contains — Checks if the storage contains a specific object

说明

public SplObjectStorage::contains ( object $object ) : bool

Checks if the storage contains the object provided.

参数

object

The object to look for.

返回值

Returns true if the object is in the storage, false otherwise.

范例

Example #1 SplObjectStorage::contains() example

<?php$o1 = new StdClass;$o2 = new StdClass;$s = new SplObjectStorage();$s[$o1] = "hello";var_dump($s->contains($o1));var_dump($s->contains($o2));?>

以上例程的输出类似于：

bool(true)
bool(false)

参见

• SplObjectStorage::offsetExists() - Checks whether an object exists in the storage