How to check If an element exists in Array in php

Updated at 02-Apr-2021, By samar

How to check If an element exists in Array in php

Good day, guys. In this post, we’ll look at how to solve the "How to check If an element exists in Array in php" programming puzzle.

  • Check if an element exists in the array or not using array_key_exists() function

    <?php
        $arr = array("ten" => 10, "dustin" => 21, "putin" => 30, "obama" => 40);
        if (array_key_exists("dustin", $arr))
        {
            echo "Key exists!";
        }
        else
        {
            echo "Key does not exist!";
        }
    

    PHP array_key_exists() is an inbuilt function that check If an element exists in an array in php. This code snippet has an associative array with key and value pairs with array_key_exists() function which checks if a given key exists in it or not. This function returns a true value if the key exists and returns false if the key does not exist.

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