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How to check If an element exists in Array in php

  • 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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