How to detect if it’s AMP page with Function?

If you are developing some code and you want to detect if it’s AMP then you can use the below code.

if ( function_exists( 'ampforwp_is_amp_endpoint' ) && ampforwp_is_amp_endpoint() ) {
}

Warning: is_amp_endpoint() is depreciated from AMPforWP

If you are facing any warnings in the debug log or on the website like

Notice: is_amp_endpoint was called <strong>incorrectly</strong>. is_amp_endpoint() is deprecated from AMPforWP, please use ampforwp_is_amp_endpoint instead. Please see <a href=”https://codex.wordpress.org/Debugging_in_WordPress”>Debugging in WordPress</a> for more information.

Then to solve this warning, go to the path mentioned in the warning and  find is_amp_endpoint and replace it with ampforwp_is_amp_endpoint

This will fix the warnings.

Hope it helps. If you have any questions, then please ask us in the below comments.