SplObjectStorage::contains

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

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

示例 #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

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