问我的登录插件有问题

EN

/**
 * Plugin Name:       LD Login Form 
 * Plugin URI:        https://testsite.co.za
 * Description:       Empire Investment Login Form
 * Version:           1.0
 * Author:            Luthando
 * Author URI:        https://testsite.co.za
 */

// Hooks, etc.
add_action( 'init', 'luecustom_form_process' );
add_shortcode('luthandoLog', 'luecustom_form');


function luecustom_form( $atts, $content, $tag ) {

    // Make sure you pick up the global $errMessage
    global $errMessage;

    // Don't echo/print your HTML in a shortcode. 
    // Instead put your HTML into $content to return at the end.
    $content = '
      
        Email address:
        
      
      
        Password:
        
      
      
        
          Forgot Password?     
      
      

      ' . $errMessage . '

    ';

    return $content;
}


function luecustom_form_process() {

    /*
     * You don't need $wpdb because you don't need to query the db directly
     * You DO need to globalize $errMessage so it can be used in your shortcode.
     * Do this before the "if" so that you have a defined variable
     * regardless of whether post is submitted or not. Otherwise
     * you may get an undefined variable notice in the shortcode result.
     */ 
    global $errMessage;
    $errMessage = "";

    if(isset($_POST['submit']) && 'Login' == $_POST['submit'] ) {

        // Sanitize email
        $email = sanitize_email( $_POST['email'] );
        // Don't sanitize password because it may contain characters that would be removed. 
        // It's going to be hashed for comparison anyway.
        $pass = $_POST['pass']; 

        // Get the user by their email address
        $user = get_user_by( 'email', $email );

        // Check if the posted password is the same as the user's hashed password.
        $validate_pass = wp_check_password( $pass, $user->user_pass );

        // If the user validates (wp_check_password() returns true), then...
        if( $validate_pass ){

            header("Location: https://dhetcodesigns.000webhostapp.com/?page_id=5");
            exit;

        }else{
            $errMessage = "Incorrect username/password";
        }

    }
}