Wpdb->插入不插入第一个变量

我这里有一个奇怪的错误。我正在尝试写入wordpress数据库，但是$wpdb->insert 不写入变量的名字。

有人能发现这段代码中的错误吗？

function pay_record_register( $first_name = "NA", 
                            $last_name = "NA", 
                            $payer_email = "NA", 
                            $item_name = "NA", 
                            $gross = "NA", 
                            $currency = "NA", 
                            $payment_status = "NA", 
                            $payment_date = "NA", 
                            $address_street = "NA", 
                            $address_zip = "NA", 
                            $address_city = "NA", 
                            $address_country = "NA", 
                            $address_status = "NA"  ) {

global $wpdb;

$table_name = $wpdb->prefix . \'pay_record\';

$wpdb->insert($table_name, array( \'last_name\' => $last_name, 
                                    \'first_name\' => $first_name,
                                    \'payer_email\' => $payer_email, 
                                    \'item_name\' => $item_name, 
                                    \'gross\' => $gross, 
                                    \'currency\' => $currency, 
                                    \'payment_status\' => $payment_status, 
                                    \'payment_date\' => $payment_date, 
                                    \'address_street\' => $address_street, 
                                    \'address_zip\' => $address_zip, 
                                    \'address_city\' => $address_city, 
                                    \'address_country\' => $address_country, 
                                    \'address_status\' => $address_status
                                ));

}

在我的DB中，除了first\\u name之外，每个变量都打印有默认值（我没有发送任何值）。first\\u name为空。。。

以下是我的表格结构图： enter image description here

我对任何提示、窍门或答案都很在行：）

wpsx_53999_parse_args_example($arr_args) { // Deafults array $arr_defaults = array( last_name => \'NA\', payer_email => \'NA\', item_name => \'NA\', gross => \'NA\', currency => \'NA\', payment_status => \'NA\', payment_date => \'NA\', address_street => \'NA\', address_zip => \'NA\', address_city => \'NA\', address_country => \'NA\', address_status => \'NA\', ); extract( wp_parse_args($arr_args, $arr_defaults), EXTR_SKIP ); // Now, all the params are extracted as in-scope variables! // You can use them like, $first_name, $last_name, etc. from here on out }

使用wpdb类获取审阅值

我正在使用PHP为一个网站生成一个XML文件，他们在该网站上查看技术产品。在XML文件中，我必须显示产品的评级。出于评级目的，我使用GD Star rating插件。我一直在尝试使用wpdb类来获取每个产品的评级。然而，到目前为止，我还没有任何运气。我在phpmyadmin上使用以下SQL代码，并且我能够获取我想要的任何产品评论的评级SELECT review FROM tableName_gdsr_data_article WHERE post_id = 4627 但当我在PHP中尝试这段SQ

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