In PHP, how do I hash arrays with examples?

Hashing arrays in PHP can be done using various methods. A common approach is to use functions like `hash()` or `md5()` to generate a hash value from an array. This is useful for ensuring data integrity or creating unique identifiers for array contents.

 'John', 'age' => 30, 'city' => 'New York'];

// Convert the array to a JSON string
$jsonString = json_encode($array);

// Generate a hash from the JSON string
$hash = md5($jsonString);

// Output the hash
echo "Hash of the array: " . $hash;
?>