PHP | SplObjectStorage contains() Function
The SplObjectStorage::contains() function is an inbuilt function in PHP which is used to check the storage object contains a specified object or not.
Syntax:
bool SplObjectStorage::contains( $value )
Parameters: This function accepts a single parameter $value which specifies the storage object which is going to check.
Return Value: This function returns true if storage object contains specified object otherwise return false.
Below programs illustrate the SplObjectStorage::contains() function in PHP:
Program 1:
<?php $gfg1 = new StdClass; $gfg2 = new StdClass; // Declare Empty SplObjectStorage $str = new SplObjectStorage(); $str[$gfg1] = "GeeksforGeeks"; // Print result var_dump($str->contains($gfg1)); var_dump($str->contains($gfg2)); ?> |
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Output:
bool(true) bool(false)
Program 2:
<?php $gfg1 = new StdClass; $gfg2 = new StdClass; // Declare Empty SplObjectStorage $str = new SplObjectStorage(); $str[$gfg1] = "GeeksforGeeks"; // Print result var_dump($str->contains($gfg1)); var_dump($str->contains($gfg2)); // detach and print result $str->detach($gfg1); var_dump($str->contains($gfg1)); ?> |
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Output:
bool(true) bool(false) bool(false)
Reference: https://www.php.net/manual/en/splobjectstorage.contains.php
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