In my opinion we cannot guarantee the post existence in db for a specific query. maybe it returns an empty array. so its best practice to use the conditional statement. plus i think we are dealing with an array so to check the empty array we should use php empty function. for example: if ( … Read more
After you add a new image size, you have to regenerate the images for that size. The Regenerate Thumbnails plugin comes in handy for this purpose.
Your issue is that you are trying to use the normal jQuery shortcut ($) which doesn’t work by default as the WordPress version of jQuery is in compatibility mode. You need to wrap the code in your custom.js file in an anonymous function to map jQuery to $ as shown below: (function($) { //Your code … Read more
The core has functions like current_user_can to check for an capability of a role or check the role directly. The follow example extend your source for this check so that the function not (!) run, if the current user haven’t the rights, the capability of his role. add_filter(‘request’, function( $vars ) { // Check the … Read more
someone questioned me today that I am not doing it correctly? <?php echo get_bloginfo(‘template_url’) ?>/images/logo.png There are 2 possible reasons this could be considered ‘incorrect’: get_bloginfo is a very old function that does multiple things, this particular function was replaced by get_template_directory_uri and get_stylesheet_directory_uri Security! You didn’t escape anything! The entire thing should be wrapped … Read more
I think the proper filter would be mime_types found here. function wpse294198_mime_types( $mimes ) { $mimes[‘xls|xlsx’] = ‘application/vnd.ms-excel’; return $mimes; } add_filter( ‘mime_types’, ‘wpse294198_mime_types’ ); You can use command line tool file (linux|macOS) to see the mime type, e.g. file –mime-type -b somefile.xls
widgets_init isn’t a function, it’s an action hook. The callback you specify for that hook is generate_sidebars which requires two parameters, but the widgets_init hook doesn’t pass any parameters to its callbacks. I think what you’re trying to do is this: add_action( ‘widgets_init’, ‘call_sidebar_function’ ); Which will call the call_sidebar_function() function which will then call … Read more
Yes, you can. But you have to be careful, since some special cases may occur. Some of them are: 1. Function may be class method and not a global function: class SomeClass { … function some_function() { … } … } In such case, you can use it only if: – it’s a static function … Read more
Well, you can get sites with get_sites and loop through them: if ( function_exists( ‘get_sites’ ) && class_exists( ‘WP_Site_Query’ ) ) { $sites = get_sites(); foreach ( $sites as $site ) { // do something } return; }
This is incorrect: <?php bloginfo; ?> bloginfo() is a function, so you need to use parentheses (): <?php bloginfo(); ?>