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PHP SplObjectStorage removeAll () function

Syntax:
void SplObjectStorage::removeAll ($obj)
Parameters: This function takes one parameter, $obj,which specifies the repository to be removed from the current repository.Return Value:This function does not return any value .The following programs illustrate the function SplObjectStorage::removeAll()in PHP:Program 1: $obj1 = new StdClass; $obj2 = new StdClass; $gfg1 = new SplObjectStorage(); $gfg1 [ $obj1 ] = "Geeks" ; $gfg2 = new SplObjectStorage(); $gfg2 [ $obj1 ] = "GFG" ; $gfg2 [ $obj2 ] = "GeeksClasses" ;  
// Count and print all existing objects var_dump ( count ( $gfg2 ));  
// Remove all $gfg1 objects from $gfg2 $gfg2 -> removeAll ( $gfg1 );  
// Print the result after removeAll var_dump ( count ( $gfg2 )); ?>
Exit:
int (2 ) int (1)
Program 2: $obj1 = new StdClass; $obj2 = new StdClass; $gfg1 = new SplObjectStorage(); $gfg1 [ $obj1 ] = "Geeks" ; $gfg2 = new SplObjectStorage(); $gfg2 [ $obj1 ] = "GFG" ; $gfg2 [ $obj2 ] = "GeeksClasses" ;  
// Count and print all existing objects var_dump ( count ( $gfg2 ));  
// Remove all $gfg1 objects from $gfg2 $gfg2 -> removeAll ( $gfg1 );  
// Print the result after removeAll var_dump ( count ( $gfg2 ));  
// Delete all objects yourself $gfg2 $gfg2 -> removeAll ( $gfg2 );  
// Print the result after removeAll var_dump ( count ( $gfg2 ));  
?>
Exit:
int (2 ) int (1) int (0)
Link: https : //www.php.net/manual/en/splobjectstorage.removeall.php

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