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PHP | Ds\Sequence contains() Function

Last Updated : 21 Aug, 2019
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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 
<?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 
<?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

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