Wordpress wp_signon（）函数出错

Question

当我运行wp_signon（）时，我有几个类似的警告： ＆＃34;警告：无法修改标头信息 - 已经发送的标头（输出从/web/htdocs/www.example.com/home/wp-includes/class.wp-styles.php:237开始）第892行＆＃34; / / em> /web/htdocs/www.mysite.com/home/wp-includes/pluggable.php 无论如何都要登录，如果我改变页面然后没有给我带来任何问题，但我无法理解这些错误。 我正在附加登录代码。 非常感谢您的帮助！

  

header.php：

    <div id="loginbar">

    <?php   $current_user = wp_get_current_user();
            if(isset($_POST["submit"])){        
            custom_login();
            }?>

    <?php if(!is_user_logged_in()): ?>  
        <form name="frontlog" method="post">            
            <input id= "log" type="text" name="log" placeholder="Username">     
            <input id= "pwd" type="password" name="pwd" placeholder="Password"> 
            <input type= "submit" name="submit" class="linkbuttonleft" id="loginbutton">    
        </form>     
        <a class="linkbuttonright" title="Registrati" href="http://www.example.com/registrazione/">
        <img id="chiave" src="http://www.example.com/wp-content/themes/BiscuitsTheme/immagini/chiave.png" onmousedown="return false"></a>   
    <?php else: ?>       
        <p> <?php echo 'Benvenuto ' . $current_user->user_login;?> </p>     
        <a class="linkbuttonleft" title="Logout" href="<?php echo wp_logout_url( home_url() ); ?>"></a>         
        <img id="lucchetto" src="http://www.example.com/wp-content/themes/BiscuitsTheme/immagini/lucchetto.png" onmousedown="return false"></a>
        <a class="linkbuttonright" title="Profilo" href="http://www.example.com/profilo/">
        <img id="profilo" src="http://www.example.com/wp-content/themes/BiscuitsTheme/immagini/profilo.png" onmousedown="return false"></a>
    <?php endif; ?>
</div>

  

functions.php：

    function custom_login() {
    $creds = array();   
    $creds = array(
        'user_login'    => $_POST["log"],
        'user_password' => $_POST["pwd"],
        'remember'      => true
    );

    $user = wp_signon( $creds, false );

    if ( is_wp_error($user) ) {
        echo $user->get_error_message();
    }
    else {
        wp_set_current_user( $user->ID, $user->name );
        wp_set_auth_cookie( $user->ID, true, false );
    }
};add_action( 'after_setup_theme', 'custom_login' );

Answer 1

最明显的问题可能是

<div id="loginbar">

<?php   $current_user = wp_get_current_user();
        if(isset($_POST["submit"])){        
        custom_login();
        }?>

登录功能将加载一个新的页面，一旦有数据输出到页面，php就无法做到这一点，你在函数上面有1个div，我也假设你的标题输出。

尝试使用函数文件（主题或插件）并使用init hook：

function cust_log(){
        $current_user = wp_get_current_user();
        if(isset($_POST["submit"])){        
        custom_login();
}
add_action('init', 'cust_log');

Answer 2

我已经解决了“第一次没有登录错误”的wp_signon（）函数，所以你只需要在wp_signon（）函数下面调用set_current_user（$ user_verify-＆gt; ID）函数：

require('wp-load.php'); 
$err = '';
$success = '';
global $wpdb,$current_user;
    $response = array();
    $data = json_decode(file_get_contents("php://input"));

    $email    = $data->email_id;
    $password = $data->password;
    $username = $wpdb->escape($email);
    $password = $wpdb->escape($password);
    $remember = true;
    if($remember) $remember = "true";
    else $remember = "false";
    $login_data = array();
    $login_data['user_login'] = $username;
    $login_data['user_password'] = $password;
    $login_data['remember'] = $remember;

    $user_verify = wp_signon( $login_data, false ); 
    set_current_user($user_verify->ID);
    if (is_user_logged_in()) 
    {
        get_currentuserinfo();

            $response['user_id']=$user_verify->ID;
            $response['first_name']=$current_user->user_firstname ;
            $response['last_name']=$current_user->user_lastname;
            $response['email']=$current_user->user_email;
      $status="success";
      $msg="";
    } else {    
      $status="failed";
      $msg="Invalid Credential.";
     }