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', $class, $message ); } add_action( 'admin_notices', 'sample_admin_notice__error' ); The class notice-error will display the message with a white background and a red left border. Use notice-warning for a yellow/orange, and notice-info for a blue left border. Don’t use update-nag as a class name! It is not suitable for regular admin notices, as it will apply different layout styling to the message. Additionally it will trigger the message to be moved above the page title (

), thus semantically prioritizing it above other notices which is not likely to be appropriate in a plugin or theme context. The class name is-dismissible will automatically trigger a closing icon to be added to your message via JavaScript. Its behavior,

/ 17 CommentsHow to Display Error Messages in WordPressRegardless of your level of experience with WordPress, everyone is familiar with seeing the messages that display whenever an action has completed within the dashboard:We have success messages for when something has completed, ahem, successfully,We have notification messages which are neutral pieces of wordpress error_log information that give a heads up something has happened,And we have error messages wordpress error log plugin that let us know that something has gone wrong.For anyone that's read past articles, you know that when it comes wordpress add_settings_error to introducing functionality into the WordPress dashboard, I firmly believe that the work we do should look as native as possible. That is to say that I am not a fan of custom https://codex.wordpress.org/Plugin_API/Action_Reference/admin_notices styles, custom controls, or extraordinary styles to give your theme or plugin that "extra edge."And for those who are familiar with the Settings API and/or the Options API, then you're likely familiar with introducing new sections, settings, controls, and options, but what about error messages?Generally speaking, success messages and notification messages are reasonably easy to come by, but let's say that you need to validate some https://tommcfarlin.com/display-error-messages-in-wordpress/ piece of information that's coming into the server and return an error if it fails.Display Error Messages in WordPressAs with most things, things like this are usually best demonstrated through a practical example. Luckily, there's no too much to setup before we take a look at how to do it.So let's assume the following:We have a meta box on the post dashboardThe meta box contains an input boxWhen the post is saved, the input box cannot be empty (I know, that's a bit extreme, but it'll demonstrate the point)If the input box is empty, then we'll display an error messageEasy enough, but in order to save time, I'm going to assume you're familiar with the add_meta_boxes action, the add_meta_box function, the save_post hook and how to validate data from within the hooked function.In this case, we're going to be making sure that the data coming in from the meta box input is not empty. If it is, then we'll display a native WordPress error message.To that end, let's assume that the input box has the name attribute of acme-input-field and it can be accessed via the $_POST collection by retrieving it as $_POST['acme-input-field'].From there, let's do something like the follo

tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site http://wordpress.stackexchange.com/questions/84402/how-to-display-error-messages-using-wp-error-class About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us WordPress Development Questions Tags Users Badges Unanswered Ask Question _ WordPress Development Stack Exchange is a question and answer site for WordPress developers and administrators. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can wordpress error answer The best answers are voted up and rise to the top How to display error messages using WP_Error class? up vote 2 down vote favorite I have registration form code in my functions.php file like this if ('POST' == $_SERVER['REQUEST_METHOD'] && !empty($_POST['action']) && $_POST['action'] == 'registration') { $error = new WP_Error(); if (empty(esc_attr($_POST['email']))) { $error->add('regerror','Email is required.'); } if (!is_email(esc_attr($_POST['email']))) { $error->add('regerror','Invalid email format.'); error message in } if (email_exists(esc_attr($_POST['email']))) { $error->add('regerror','Email already in use. Did you forget your Password? If yes click here to reset.'); } } Now can someone tell me how to display those error messages in my register page? Update: My registration page has code like this

functions pages errors registration wp-error share|improve this question edited Feb 4 '13 at 5:21 asked Feb 4 '13 at 4:53 Giri 1,76342768 That's it? Surely there is more code? This must be in a function right? Is it hooked to anything? Called directly? What? –s_ha_dum♦ Feb 4 '13 at 5:16 @s_ha_dum Please check my update. Its not a function. My if loop checks the action parameter. If action == registration then the code will be executed. Its not hooked to anything. And yes I have some extra codes too in my if loop. I just trimmed it to make the question simple. –Giri Feb 4 '13 at 5:24 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted With th