Login at two wordpress blogs at once

Question

I'm stumbling into a little problem as I'm currently trying to programmatically log into two wordpress blogs at once. I have a custom login page and the sessions for both wordpress blogs have to be created. One blog works just fine, but as I have to include another wp-load.php it doesn't work for the second one... My code so far:

...
public static function blogLogin($mail, $password) {
        require __DIR__ . '/../blog/wp-load.php';

        $wpuser = get_user_by('email', $mail);
        if (!$wpuser) $wpuser = get_user_by('login', $mail);

        if (!empty($wpuser) && !empty($wpuser->ID)) {
            wp_set_auth_cookie($wpuser->ID, true);
            return true;
        } else {
            return false;
        }
}

public static function secondBlogLogin($mail, $password) {
        require __DIR__ . '/../secondblog/wp-load.php';

        $wpuser = get_user_by('email', $mail);
        if (!$wpuser) $wpuser = get_user_by('login', $mail);

        if (!empty($wpuser) && !empty($wpuser->ID)) {
            wp_set_auth_cookie($wpuser->ID, true);
            return true;
        } else {
            return false;
        }
}
...

And is being called by: Class::blogLogin(...); Class::secondBlogLogin(...); This seems not to work as the include is not only "sandboxed" inside the function but also available in the outside. Is there a ways to either kind off an inclusion or otherwise to achieve this login at both wordpress blogs in one script?

Answer 1

Below answer is for enable login of two word press during one execution from single custom login page.

//Your form which contain custom login (email,password).

<?php
//afer submit form post login credential value into PHP code of first file.
if(isset($_POST) && isset($_POST['submit'])){       
require("path of first wordpress root directory \wp-load.php");
if ( is_user_logged_in() ) {
    $user = wp_get_current_user();
} else {
    $creds = array();
    // Use the submited information to populate the user_login & user_password
    $creds['user_login']    = $_POST['username or email'];
    $creds['user_password'] = $_POST['password'];
    $creds['remember']      = true;
    $user                   = wp_signon( $creds, false );
    if ( is_wp_error( $user ) ) {
        echo $user->get_error_message();
    } else {
        wp_set_auth_cookie( $user->ID, true );
    }
    ?>    
    <script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
    <script type="text/javascript">
    var url = 'url/first-blog-login.php';      
    var user = '<?php echo $_POST['username or email'];?>';
    var password = '<?php echo $_POST['password'];?>';
    $.ajax({
       type: "POST",
       url: url,
       data: {
           'user':user,
           'password':password
       },
       success: function(){         
          alert("detail passed successfully.");
       }
     });       
    </script>
    <?php
}
}   

if(isset($_POST) && !empty($_POST)){
    $user =  $_POST['user'];
  $password =  $_POST['password'];
  require("path of secound wordpress root directory\wp-load.php");
  if ( is_user_logged_in() ) {
    $user = wp_get_current_user();
} else {
    $creds= array();
    // Use the submited information to populate the user_login & user_password
    $creds['user_login']    = $user;
    $creds['user_password'] = $password;
    $creds['remember']      = true;
    $user                   = wp_signon( $creds, false );
    if ( is_wp_error( $user ) ) {
        echo $user->get_error_message();
    } else {
        wp_set_auth_cookie( $user->ID, true );
    }
}
}
?>