SplObjectStorage::contains()
(PHP 5 >= 5.1.0, PHP 7)
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
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