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(PHP 5 >= 5.1.0)
SplObjectStorage::contains — Checks if the storage contains a specific object
$object
)Checks if the storage contains the object provided.
object
The object to look for.
Returns TRUE
if the object is in the storage, FALSE
otherwise.
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)