Does hooking into a plugin action / filter override the plugin’s function for that hook?

It depends entirely on the specific plugin and the specific hook. It’s completely up to plugin developers what they want to allow other developers to do. They could allow developers to replace entire functions; to perform a custom action at the beginning, middle, or end of a function; to modify the result of a function; … Read more

How to save history in the client’s browser without login? [closed]

You can use cookie to store information in the visitor’s browser. In your single post template, you can set the cookie by using setcookie( ‘last_post_id’, get_the_ID() ); And on your other page, you can manage the last post that the user has visited. $last_post_id = ! empty( $_COOKIE[‘last_post_id’] ) ? $_COOKIE[‘last_post_id’] : false; if( $last_post_id … Read more

wp delete duplicate entries of custom post types every 15 minutes

Start by ensuring that there is actually a 15min interval available. // create the cron scheduled interval to be used add_filter(‘cron_schedules’,’ex11_cron_schedules’); function ex11_cron_schedules($schedules){ if(!isset($schedules[“15min”])){ $schedules[“15min”] = array( ‘interval’ => 15*60, ‘display’ => __(‘Once every 15 minutes’)); } return $schedules; } Then create a custom WP_Query loop to fetch all the records you need to compare, … Read more

How can error pages be customized

I believe your problem stems from the upload process itself. If so, you do not need to customize an error message. Instead, you need to update your upload settings, and/or publish your file size limits to your community. This article describes what causes that error, and how to address it. Good luck!