What is the default "post_max_size" configuration setting in PHP and how can it affect the data transmitted via $_POST?

The default "post_max_size" configuration setting in PHP is 8MB. If the data transmitted via $_POST exceeds this limit, the data will not be properly received and processed by the server. To solve this issue, you can increase the "post_max_size" setting in the php.ini file to accommodate larger data transmissions.

// Increase the post_max_size setting in php.ini file
// This example sets the post_max_size to 20MB
ini_set('post_max_size', '20M');