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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