The Ds\Vector::contains() function is an inbuilt function in PHP which is used to check the vector contains given value or not.
Syntax:
bool public Ds\Vector::contains( $values )
Parameters: This function accepts a single parameter $values which contains single/many values.
Return Value: This function returns true if the given value exists, false otherwise.
Below programs illustrate the Ds\Vector::contains() function in PHP:
Program 1:
<?php   // Create a vector $vector = new \Ds\Vector([1, 2, 3, 4, 5]);   // Use contains() function to check // existence of vector elements var_dump($vector->contains(1));   var_dump($vector->contains(1, 2));   var_dump($vector->contains(10));   ?> |
Output:
bool(true) bool(true) bool(false)
Program 2:
<?php   // Create a vector $vector = new \Ds\Vector(["neveropen", "for", "neveropen"]);   // Use contains() function to check // existence of vector elements var_dump($vector->contains("neveropen"));   var_dump($vector->contains("neveropen", "for"));   var_dump($vector->contains("GfG"));   ?> |
Output:
bool(true) bool(true) bool(false)
Reference: http://php.net/manual/en/ds-vector.contains.php
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