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PHP SplObjectStorage offsetUnset () function

Syntax:
void SplObjectStorage::offsetUnset ($object)
Parameters: This function takes one parameter, $object,which indicates what should be reset.Return value:This function does not return any value. The following programs illustrate the function SplObjectStorage::offsetUnset()in PHP:Program 1:

 
// Create empty SplObjectStorage $str = new SplObjectStorage; $obj = new StdClass;  
// Set $​​obj offset to $str $str -> attach ( $obj , "GeeksforGeeks" );  
// Print the result before var_dump ( count ( $str ));  
// Remove object from storage $str -> offsetUnset ( $obj );  
// Print the result after var_dump ( count ( $str ));  
?>
Exit:
int (1 ) int (0)
Program 2:  
// Create empty SplObjectStorage $str = new SplObjectStorage(); $obj1 = new StdClass; $obj2 = new StdClass; $obj3 = new StdClass; $obj4 = new StdClass; $str -> attach ( $obj1 , " GeksforGeeks " ); $str -> attach ( $obj2 , "GFG" ); $str -> attach ( $obj3 ); $str -> attach ( $obj4 , "DSA" );  
// Print the result before var_dump ( count ( $str ));  
// Remove object from storage $str -> offsetUnset ( $obj1 ); $str -> offsetUnset ( $obj2 ); $str -> offsetUnset ( $obj3 ); $str -> offsetUnset ( $obj4 );  
// Print the result after var_dump ( count ( $str )); ?>
Exit:
int (4 ) int (0)
Link: https://www .php.net / manual / en / splobjectstorage.offsetunset.php

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