How to Check Key Exists in Array in PHP?

Hey Developer,

Hello, all! In this article, we will talk about check if key exists in array php. I explained simply step by step check if key present in array php. you'll learn php check if array key is set. you'll learn php check if array key is defined.

we will use array_key_exists() function and isset() function to check key is exists in php array. so, let's see the simple code of how to check key exists in array in php.

Example 1:

index.php

<?php
  
    $array = ['id' => 1, 'name' => 'Hardik Savani', 'email' => 'hardik@gmail.com'];
  
    if (array_key_exists('name', $array)) {
        echo('The key is exists.');
    } else {
        echo('The key is not exists.');
    }
 
  
?>

Output:

The key is exists.

Example 2:

index.php

<?php
  
    $array = ['id' => 1, 'name' => 'Hardik Savani', 'email' => 'hardik@gmail.com'];
  
    if (isset($array['name'])) {
        echo('The key is exists.');
    } else {
        echo('The key is not exists.');
    }
  
?>

Output:

The key is exists.

I hope it can help you...