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PHP SplObjectStorage contains() Function

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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));
  
?>

                    
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));
  
?>

                    
Output:
bool(true)
bool(false)
bool(false)
Reference: https://www.php.net/manual/en/splobjectstorage.contains.php

Last Updated : 23 Jun, 2023
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