How to correctly escape an echo

Escaping is only necessary when you have no full control of the the thing you are echoing. So as long as $folder is a variable that you have defined yourself, there’s no real need to escape. But if there is user input involved, there is esc_html, to be used as follows: echo esc_html (“this input … Read more

wordpress post not showing my “” text>?

You have to escape th < and the > with &lt; and &gt;, otherwise WordPress will remove the “unknown tags”. You could also filter pre_kses to change the output before it gets stripped. add_filter( ‘pre_kses’, function( $str ) { // find and escape < and > on specific positions, then return $str; });

Wrapping add_query_arg with esc_url not working

And the strange part: both codes echo the same string for $url!!! No, they don’t. Look at the page source. esc_url() is encoding the & control character. You can’t do that and expect the HTTP request to work correctly. Use esc_url_raw() instead. Note the description in the Codex concerning that function: The esc_url_raw() function is … Read more