Php 对wpdb中的非对象调用成员函数insert（）

我正在处理wpdb，在那里我发现了这个错误，我声明了

global$wpdb

并希望使用

$wpdb->insert（）插入数据但它显示了此错误我的代码如下：

<?php
class Customer{
    /*Add New Customer*/
    public function AddCustomer($customer_data = array()){
        global $wpdb;

        $insert_data = $wpdb -> insert ( 'customer', array(

            'customer_name' => $customer_data['customer_name'],
            'company_name' => $customer_data['customer_company'],
            'customer_contact' => $customer_data['customer_contact'],
            'address' => $customer_data['customer_address'],
            'customer_bank_acc' => $customer_data['customer_bank'],
            'customer_bank_branch' => $customer_data['customer_branch'],
            'customer_ifsc_code' => $customer_data['customer_ifsc'],
            'customer_gst_no' => $customer_data['customer_gst'],
            'customer_remarks' => $customer_data['customer_remark'],
            'customer_status' => 1,

        ) );
        return true;
    }
}

?>


您尝试过调试什么？运行时，
$wpdb
包含哪些内容？我已经检查了所有列名和表，并且$wpdb对于所有类都是全局的。
var\u dump（$wpdb）
？var\u dump（$wpdb）=null的输出，那么您的数据库还没有初始化，错误很明显。