The SplObjectStorage::offsetExists() function is an inbuilt function in PHP which is used to check the object exist in storage or not.
Syntax:
bool SplObjectStorage::offsetExists($object)
Parameters: This function accepts a single parameter $object which specifies the object to be checked.
Return Value: This function returns true if the object exists in storage otherwise return false.
Below programs illustrate the SplObjectStorage::offsetExists() function in PHP:
Program 1:
php
<?php // Create an empty SplObjectStorage $str = new SplObjectStorage; $obj = new StdClass; // Attach $obj to $str $str->attach($obj); // Print Result var_dump($str->offsetExists($obj)); ?> |
Output:
bool(true)
Program 2:
php
<?php // Create an Empty SplObjectStorage $str = new SplObjectStorage(); $obj1 = new StdClass; $obj2 = new StdClass; $obj3 = new StdClass; $obj4 = new StdClass; // Attach only three objects $str->attach($obj1, "GeksforGeeks"); $str->attach($obj2, "GFG"); $str->attach($obj3); // Print result var_dump($str->offsetExists($obj1)); var_dump($str->offsetExists($obj2)); var_dump($str->offsetExists($obj4)); var_dump($str->offsetExists($obj3)); ?> |
Output:
bool(true) bool(true) bool(false) bool(true)
Reference: https://www.php.net/manual/en/splobjectstorage.offsetexists.php
