SplObjectStorage::contains()

(PHP 5 >= 5.1.0, PHP 7)

Checks if the storage contains a specific object

说明

publicSplObjectStorage::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

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