How can JavaScript arrays be converted into PHP arrays?

To convert JavaScript arrays into PHP arrays, you can use JSON to serialize the JavaScript array into a string, and then use json_decode() function in PHP to decode the JSON string back into a PHP array.

// JavaScript array
$jsArray = '[1, 2, 3, 4, 5]';

// Convert JavaScript array to PHP array
$phpArray = json_decode($jsArray);

// Print the PHP array
print_r($phpArray);