get_current_user_id（）即使在我登錄時也會返回0

-1

get_current_user_id()即使在我登錄時也返回0。我正在使用它在數據庫中添加一些值，但始終返回0。get_current_user_id（）即使在我登錄時也會返回0

<?php 
include "class.Database.inc"; 
require($_SERVER['DOCUMENT_ROOT'].'/wp-load.php'); 
define ("DIR_PATH", dirname(__FILE__)."/uploads"); 
define ("BOOK_FOLDER" ,"/book"); 
define ("COVER_FOLDER","/cover"); 


function checkIfFileExistsAndReturnPath($location,$name,$ext){ 
    ... 
} 

function saveFile($file,$folder,$name) 
{ 
    ... 

} 

function uploadMedia($file, $post) 
{ 
    ... 
} 

function returnJson ($message , $code) 
{ 
     $msg = $message; 
     $Code = $code; 
     $array = array ('code' => $Code, 'message' => $msg); 
     header('Content-type: application/json'); 
     echo json_encode($array); 
} 

function authorExists ($id) 
{ 
    if ($id == 0) 
    { 
     returnJson("You are not logged in." , 6); 
    } 
    else { 
    $db = Database::getInstance(); 
    $connection = $db->getConnection(); 

    $sql_query = "Select * from gp_posts where post_type = 'authorbook' AND post_author = '".$id."'"; 

    $result = $connection->query($sql_query); 
    $number = 0; 

    foreach ($result as $row) 
    { 
     $number++; 
    } 

    if ($number > 0) 
    { 
     return true; 
    } 

    return false; 
    } 
} 

function getAuthorId ($id) 
{ 
    $db = Database::getInstance(); 
    $connection = $db->getConnection(); 

    $sql_query = "Select ID from gp_posts where post_type = 'authorbook' AND post_author = '".$id."'"; 

    $result = $connection->query($sql_query); 
    $author_post_id = NULL; 
    foreach ($result as $row) 
    { 
     $author_post_id = $row['ID']; 
    } 

    if ($author_post_id != NULL) 
    { 
     return $author_post_id; 
    } 

    return NULL; 
} 

function createAuthor ($id) 
{ 
    $current_user = wp_get_current_user(); 

    $my_post = array(
      'post_title' => $current_user->user_firstname." ".$current_user->user_lastname , 
      'post_status' => 'publish', 
      'post_author' => $user_id, 
      'post_type' => 'authorbook', 
      'comment_status' => 'closed' 
      ); 


      // Insert the post into the database 
      $post_id = wp_insert_post($my_post , $wp_error); 

      if ($post_id) 
      { 
       return $post_id; 
      } 
} 


$code = 0; 
function cleanPostData($post_data){ 
    $post_data = trim($post_data); 
    $post_data = stripslashes($post_data); 
    $post_data = htmlspecialchars($post_data); 
    return $post_data; 
} 

if ($_SERVER["REQUEST_METHOD"] == "POST"){ 

    $title = stripslashes(htmlspecialchars($_POST['title'])); 

    $genre = cleanPostData($_POST['genre']); 

    $language = cleanPostData($_POST['language']); 

    $book_file = $_FILES['book']; 
    $book = $_FILES['book']['tmp_name']; 
    $book_file_name = $_FILES['book']['name']; 

    $book_description = cleanPostData($_POST['book_description']); 

    $book_front_cover_file = $_FILES['book_front_cover']; 
    $book_front_cover_name = $_FILES['book_front_cover']['name']; 
    $book_front_cover = $_FILES['book_front_cover']['tmp_name']; 
    $book_front_cover_id = ""; 

    $book_back_cover_file = $_FILES['book_back_cover']; 
    $book_back_cover_name = $_FILES['book_back_cover']['name']; 
    $book_back_cover = $_FILES['book_back_cover']['tmp_name']; 
    $book_back_cover_id = ""; 

    $user = wp_get_current_user(); 
    $user_id = $user->ID; 
    //$user_id = get_current_user_id(); 
    $author = authorExists($user_id) ? getAuthorId($user_id) : createAuthor($user_id); 



    //echo var_export($book_file_name);echo "<br>"; 

    if (empty($title)) 
    { 
     returnJson("Please provide the title of your book." , 1); 
    } 

    else if (empty($genre)) 
    { 
     returnJson("Please select a genre.", 2); 
    } 

    else if (empty($book_file_name)) 
    { 
     returnJson("Please select a book." , 3); 
    } 

    else if (empty($book_description)) 
    { 
     returnJson("Please provide a sdescription about the book." , 4); 
    } 


    /*else if (empty($author)) 
    { 
     returnJson("Please select an author, if your desired author is not in the list you can create a new author from above." , 5); 

    }*/ 

    else { 
     ... 

    } 

}

來源

2017-08-21 Syed Faisal Abbas

沒有代碼沒有幫助！ –

對不起，沒有足夠的信息繼續下去。我可以告訴你的是，你正在運行一個查詢... – Sablefoste

請提供一些你的代碼努力，所以至少有人可以建議進一步 –

嘗試添加get_current_user_id()功能init行動中獲得當前用戶ID。

像這樣：

add_action('init', 'myFunction'); 

function myFunction(){ 
    $user_ID= get_current_user_id();  
    // THEN DO YOUR CODE OR QUERY TO ADD VALUE IN DB. 
}

希望這將有幫助，併爲你的作品。謝謝。

來源

2017-08-21 13:26:07

這個函數就是從全局var $ current_user返回一個值。
嘗試添加：

global $current_user; 
var_dump($current_user);

，並期待它包含的內容。
如果沒有WP_User對象，可能是某個插件更改了全局變量，或者某個函數的過濾器determine_current_user更改了返回值。

來源

2017-08-21 21:41:56

get_current_user_id（）即使在我登錄時也會返回0

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