PHP | Ds\Sequence contains() Function

The Ds\Sequence::contains() function is an inbuilt function in PHP which is used to check the given value exists in the sequence or not.

Syntax:

bool abstract public Ds\Sequence::contains ([ mixed $...values ] )

Parameter: This function accepts single or many values which need to check the value exist in the sequence or not.

Return value: If value exist in the sequence then it returns True otherwise returns False.

Below programs illustrate the Ds\Sequence::contains() function in PHP:

Program 1:

<?php

// Create a sequence
$seq = new \Ds\Vector(['G', 'e', 'e', 'k', 's', 5, 2, 7]);

// Use contains() function to check elements
// exist in the sequence or not
var_dump($seq->contains('G'));

var_dump($seq->contains('k'));

var_dump($seq->contains('p'));

var_dump($seq->contains(7));

var_dump($seq->contains('5'));

?>

Output:

bool(true)
bool(true)
bool(false)
bool(true)
bool(false)

Program 2:

<?php

// Create a sequence
$seq = new \Ds\Vector(['G', 'e', 'e', 'k', 's', 5, 2, 7]);

// Use contains() function to check elements
// exist in the sequence or not
var_dump($seq->contains('G', 'e'));

var_dump($seq->contains('k', 'e', 7));

var_dump($seq->contains('p', '1'));

var_dump($seq->contains(7, 1));

var_dump($seq->contains('5', 5));

?>

Output:

bool(true)
bool(true)
bool(false)
bool(false)
bool(false)

Reference: http://php.net/manual/en/ds-sequence.contains.php