It is not so easy to check if a request was made from the backend or not. This post shows my solution for that, which I build recently.<\/p>\n\n\n\n\n\n\n\n
is_admin()<\/code><\/h2>\n\n\n\nThe plugin Lazy Loading Responsive Images<\/em><\/a> needs to check if a request was made in the backend, to modify only image markup at the front end. The function is_admin()<\/code> checks if a backend page was called \u2013 this was the first solution used in the plugin.<\/p>\n\n\n\nBut then a user came across a problem with that: the function returns true<\/code> for AJAX requests because they use the wp-admin\/admin-ajax.php<\/code>. That means the lazy loading plugin did not work for front end content which is added via AJAX because is_admin()<\/code> returns true<\/code>.<\/p>\n\n\n\nThe solution<\/h2>\n\n\n\n
With that in mind, the solution has to check for AJAX requests somewhere. The first try of a function to replace the is_admin()<\/code> calls looked like the following (kindly directly supplied by the user zitrusblau<\/em> with the issue report<\/a>):<\/p>\n\n\n