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POHow to hook validate_username (or sanitize_user) in WP?
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copied!<p>I am new to wordpress and I am just learning it. <strong>How to hook validate_username or sanitize_user functions?</strong></p> <p>I do not want to call them at all, I want to change them for my particular plugin.</p> <p>Here is the full story: My problem is that I do not know how to change existing WP functions correctly without modifying them (some hooks or something like this).</p> <p>I have the following problem:</p> <ul> <li>I have a plugin theme-my-login that shows registration form</li> <li>it has register_new_user (that handles registering a new user) -> it is not wp standard function, but is written in plugin</li> <li><p>this function calls WP standard validate_username:</p> <pre><code>function register_new_user( $user_login, $user_email,$term, $country ) { $errors = new WP_Error(); $sanitized_user_login = sanitize_user( $user_login ); $user_email = apply_filters( 'user_registration_email', $user_email ); // Check the username if ( $sanitized_user_login == '' ) { $errors->add( 'empty_username', __( '<strong> ط®ط·ط£ </strong>...', 'theme-my-login' ) ); } elseif ( !**validate_username**( $user_login ) ) { //HERE WE CALL WP VALIDATE_ $errors->add( 'invalid_username', __( '<strong> ط®ط·ط£ </strong>: </code></pre> <p>....</p></li> </ul> <p>So, the problem here is that *validate_username* doesn't allow usernames to be in arabic language. But this is what client wants. So, I believe I should overwrite or somehow modify existing WP validate_username or sanitize_user (both are in wp-includes/user.php).</p>

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