PHP | Ds\Set contains() Function

The Ds\Set::contains() function is an inbuilt function in PHP which is used to check the given value exists in the set or not. This function compares the value and its type.

Syntax:

public Ds\Set::contains( $values ) : bool

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

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

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



Program 1:

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<?php 
  
// Declare new Set
$set = new \Ds\Set(['G', 'e', 'e', 'k', 's', 5, 2, 7]); 
  
// Use contains() function to check elements 
// exist in the Set or not 
var_dump($set->contains('G'));  
    
var_dump($set->contains('k')); 
    
var_dump($set->contains('p'));  
    
var_dump($set->contains(7));  
    
var_dump($set->contains('5'));  
    
?>  

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Output:

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

Program 2:

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<?php 
  
// Declare new Set
$set = new \Ds\Set(['G', 'e', 'e', 'k', 's', 5, 2, 7]); 
  
// Use contains() function to check elements 
// exist in the Set or not 
var_dump($set->contains('G', 'e'));  
    
var_dump($set->contains('k', 'e', 7)); 
    
var_dump($set->contains('p', '1'));  
    
var_dump($set->contains(7, 1));  
    
var_dump($set->contains('5', 5));  
    
?>  

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Output:

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

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



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