The Ds\Deque::contains() function is an inbuilt function in PHP which is used to check the deque contains given values or not.
Syntax:
bool Ds\Deque::contains( $values )
Parameters: This function accepts single or many $values which hold the value to check that value exist in the deque or not.
Return Value: If value exist in the deque then it returns True otherwise returns False.
Below programs illustrate the Ds\Deque::contains() function in PHP:
Program 1:
<?php // Declare new Deque $deque = new \Ds\Deque([ 'G' , 'e' , 'e' , 'k' , 's' , 5, 2, 7]);
// Use contains() function to check elements // exist in the deque or not var_dump( $deque ->contains( 'G' ));
var_dump( $deque ->contains( 'k' ));
var_dump( $deque ->contains( 'p' ));
var_dump( $deque ->contains(7));
var_dump( $deque ->contains( '5' ));
?> |
Output:
bool(true) bool(true) bool(false) bool(true) bool(false)
Program 2:
<?php // Declare new Deque $deque = new \Ds\Deque([ 'G' , 'e' , 'e' , 'k' , 's' , 5, 2, 7]);
// Use contains() function to check elements // exist in the deque or not var_dump( $deque ->contains( 'G' , 'e' ));
var_dump( $deque ->contains( 'k' , 'e' , 7));
var_dump( $deque ->contains( 'p' , '1' ));
var_dump( $deque ->contains(7, 1));
var_dump( $deque ->contains( '5' , 5));
?> |
Output:
bool(true) bool(true) bool(false) bool(false) bool(false)
Reference: https://www.php.net/manual/en/ds-deque.contains.php