What steps can be taken to troubleshoot server-side restrictions on POST requests in PHP?

If you are encountering server-side restrictions on POST requests in PHP, you can troubleshoot this issue by checking the server configuration settings such as PHP's max_input_vars, post_max_size, and max_execution_time. You can also examine the .htaccess file or server configuration files to ensure there are no restrictions on POST requests. Additionally, you can try increasing the memory_limit in the php.ini file to allow for larger POST requests.

ini_set('max_input_vars', 10000);
ini_set('post_max_size', '20M');
ini_set('max_execution_time', 300);
ini_set('memory_limit', '128M');