How to Remove Multiple Elements by Key in PHP Array?

Today’s article, we will remove multiple elements by key in a PHP array. Using PHP we can delete multiple keys from an Array.

In PHP there is no built in method to achieve this, but we can combine several PHP functions to achieve this.

In this article we will be demonstrating two methods to remove multiple keys from PHP array.

Method 1 : unset method

Below code we are removing two keys (hobby, like) from the array using unset method

$customer = [
       'name'=>'John Doe', 
       'email'=>'admin@johndoe.com', 
       'street'=>'Street 1, Avenue Drive', 
       'city'=>'Texas',
       'hobby' => 'Reading',
       'country' => 'US',
       'like' => 'Fishing'
  ];
$toRemove = ['hobby', 'like']; 

foreach($toRemove as $key){
    unset($customer[$key]);
}

print_r($customer);

Method 2 Using combination of array_diff_key and array_flip

$removeFields = ['hobby', 'like'];
$newCustomer = array_diff_key($customer, array_flip($removeFields));

print_r($newCustomer);