I'm new to WordPress, and currently developing my first plugin and currently having difficulties.
How I can insert the add_filter action inside my submit function? I want the add_filter
action to process after the user click the submit button.
I have try this but it didn't work.
if(isset($_POST['btn_submit'])) {
function addContent($content = '') {
$content .= "My content";
return $content;
}
add_filter('the_content', 'addContent');
}
Any help would be greatly appreciated. Thanks!