致命錯誤在非對象上調用成員函數insert（）

Question

我試圖在WordPress中使用Ajax插入數據，但是我收到以下錯誤，這是我使用Ajax調用的文件中的代碼：

global $wpdb;
                     $wpdb->insert('design_information',  
                      array( 
                      'layout' => $_SESSION['layout'], 
                      'language' => $_SESSION['briefform_language'], 
                      'logo_name' => $_SESSION['briefform_businessName_validation'] ,
                      'org_description' => $_SESSION['briefform_businessPurpose'], 
                      'bussiness_industry' => $_SESSION['briefform_businessIndustry'] ,
                      'slogan_logo' => $_SESSION['briefform_slogan'], 
                      'payment' => $_SESSION['price'],
                      'others' => $_SESSION['briefform_comments'], 
                      'fullname' => $_POST['paymentform_contactDetails_fullName'] ,
                      'company_name' => $_POST['paymentform_contactDetails_companyName'], 
                      'coutry_code' => $_POST['paymentform_contactDetails_phoneCountry'] ,
                      'payment_status' => 'pending',
                      'color_picker' => $newValue1,
                      'phone_no' => $_POST['paymentform_contactDetails_phoneNumber'], 
                              'address1' => $_POST['paymentform_billingDetails_address1'] , 
                      'address2' => $_POST['paymentform_billingDetails_address2'] ,
                      'city' => $_POST['paymentform_billingDetails_city'],
                      'zip' => $_POST['paymentform_billingDetails_zip'],
                      'state' => $_POST['paymentform_billingDetails_state'], 
                              'country' => $_POST['paymentform_billingDetails_country'],
                              'design' => $newValue, 
                              'slider' => $slider_value, 
                              'Website Address' => $_SESSION['website address'], 
                              'style' => $_SESSION['style'], 
                              'like' => $_SESSION['like'],
                              'file' => $_SESSION['file'], 
                              'email' => $_SESSION['email'],  
                              'order_status' => "pending"
               ));   

Answer 1

嗯，這很奇怪，也許php認為尚未聲明變量或不是實例：

嘗試這個：

include_once('wp-includes/wp-db.php');

global $wpdb;
$wpdb->insert('design_information',  ...

Answer 2

這是一個wordpress功能，因此只有在先前定義了全局$wpdb下，才能調用它。

這意味着，在/ wp-content / ...文件夾中，如果您使用具有wp特定功能的腳本，則在使用wordpress core編譯之前，該腳本將不起作用。

因此，如果您正在使用獨立腳本，則它將無法正常工作。 如果您想使用wordpress功能，那么您需要加載wordpress

如果您正在主題或插件中工作，那么下面應該可以工作

global $wpdb;
$wpdb->insert();

…或每$ GLOBALS訪問一次…

$GLOBALS['wpdb']->insert();