682Remove empty array fields in PHP 

array_filter($my_array)

array_filter WITHOUT a callback function removes 'false', 'null' and '' fields from an array.

1082array_merge behaves differently in PHP 7 and PHP 8
992Returning output of print_r in PHP
985Customising Pagination in WordPress
868Removing Categories on save_post
853PHP define(): single or double quotes?
814Swapping Array Items in Javascript
812jQuery: Getting the element index from a list of identical class elements