致命錯誤：調用成員函數對非對象的查詢（）（wordpress 3..5）

Question

致命錯誤：調用成員函數對/ home/dbc/public_html/CEHPLearning /可溼性粉劑內容/主題/ cehpLearning /上線47

<div class="content-page"> 

    <article id="post-<?php the_ID(); ?>" <?php post_class(); ?>> 

     <div class="the-post-container"> 

      <?php if (!get_meta('hide_title')) : ?> 
      <header class="entry-header"> 
       <!-- Title/Page Headline --> 
       <h1 class="entry-title" title="<?php echo the_title_attribute('echo=0'); ?>"><?php the_title(); ?></h1> 
      </header> 
      <?php endif; ?> 

      <!-- Page Text and Main Content --> 
      <div class="entry-content clearfix"> 

       <?php 
       $error = ''; 
       $success = ''; 
       $user_id = get_current_user_id(); 

       if(isset($_POST['task']) && $_POST['task'] == 'reset') { 

       $password = $_POST['pwd1']; 
       $con_password = $_POST['pwd2']; 

       if($password == "" || $con_password == "") { 
       $error = 'Password field is required.'; 
       } else if($password <> $con_password){ 
       $error = 'Password does not match.'; 
       } else { 
        $qry = $wpdb->query("UPDATE $wpdb->users SET user_pass = '".md5($password)."' WHERE ID=$user_id "); 
        if($qry) { 
         $success= 'Password updated successfully, it will take effect in your next login.'; 
        } 
       } 
       } 
       ?> 
       <?php the_content(); ?> 
       <div class="pwChangeBox"> 
        <form name="frmreset" id="frmreset" action="" method="post"> 
         <h3>Don't like your password?<br/> 
         <span>Try a new one.</span></h3><br/> 
         <div class="msgBox"> <?php if($error != "") : echo '<p class="errormsg">'.$error.'</p>'; endif; if($success != "") : echo '<p class="successmsg">'.$success.'</p>'; endif; ?> </div> 
         <label>Password</label><br/> 
         <input type="password" value="<?php echo (isset($_POST['pwd1']) ? $_POST['pwd1'] : ''); ?>" name="pwd1" id="pwd2" /><br/> 
         <br/> 
         <label>Password Again</label><br/> 
         <input type="password" value="<?php echo (isset($_POST['pwd2']) ? $_POST['pwd2'] : ''); ?>"" name="pwd2" id="pwd2" /><br/> 
         <br/> 
         <button type="submit" class="alignleft" >SUBMIT</button> 
         <input type="hidden" name="task" value="reset" /> 
        </form> 
       </div> 

      </div> 

    </article> 

</div> 

有問題的線是頁面密碼reset.php ....

$qry = $wpdb->query("UPDATE $wpdb->users SET user_pass = '".md5($password)."' WHERE ID=$user_id "); 

誰能幫幫忙？

Answer 1

您需要首先調用全局$ wpdb實例。所以在你做這個查詢之前加上：

global $wpdb;