Question

我想从wordpress中的wp_usermeta表更新一些元键。我已经使用了这段代码但找不到我的解决方案。我已经尝试过这段代码了。任何帮助都将受到高度赞赏

$newname=$_POST['name'];
    $parts = explode(" ", $newname);

    $newlname = array_pop($parts);
    $newfname = implode(" ", $parts);

    echo "Firstname: $newfname\n";
    echo "Lastname: $newlname\n";
    echo $id= $_POST['newid'];
echo $newaddress= $_POST['address'];
echo $newcity=$_POST['city'];
echo $newareacode=$_POST['acode'];


/* Start database connection */
       $dbhost = 'localhost';
       $dbuser = 'user';
       $dbpass = '';
       $conn = mysql_connect($dbhost, $dbuser, $dbpass);
       mysql_select_db('etplpm_network');
/* End  database connection */
 $sql="UPDATE wp_usermeta set 'first_name'=$newfname, 'last_name'=$newlname, 'billing_address_1'=$newaddress, 'billing_city'=$newcity, 'billing_postcode'=$newareacode WHERE 'ID'=$id"; 
     $result = mysql_query( $sql, $conn );

if($result)
{
    echo "Successfully Updated";

}
else
{
    echo "Successfully Not Updated";
}

}

Answer 1

您的MySql语法错误：

UPDATE wp_usermeta set 'first_name'=$newfname, 'last_name'=$newlname, 'billing_address_1'=$newaddress, 'billing_city'=$newcity, 'billing_postcode'=$newareacode WHERE 'ID'=$id;

您必须用引号字段值换行，而不是字段名：

UPDATE wp_usermeta SET first_name = '$newfname', ...

但是这个查询也会失败，因为你还没有检查wp_usermeta table：

CREATE TABLE `wp_usermeta` (
  `umeta_id` bigint(20) UNSIGNED NOT NULL,
  `user_id` bigint(20) UNSIGNED NOT NULL DEFAULT '0',
  `meta_key` varchar(255) DEFAULT NULL,
  `meta_value` longtext
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

因此，您首先要检查特定用户是否存在元数据：

SELECT umeta_id FROM wp_usermeta WHERE user_id=$id AND meta_key='first_name'

然后，如果元存在，请更新它：

UPDATE wp_usermeta SET meta_value='$newfname' WHERE umeta_id=...

否则，插入新的：

INSERT INTO wp_usermeta (user_id, meta_key, meta_value) VALUES ('$id', 'first_name', '$newfname')

但是，为什么不使用worpress函数update_user_meta()？

update_user_meta( $id, 'first_name',        '$newfname' );
update_user_meta( $id, 'last_name',         '$newlname' );
update_user_meta( $id, 'billing_address_1', '$newaddress' );
update_user_meta( $id, 'billing_city',      '$newcity' );
update_user_meta( $id, 'billing_postcode',  '$newareacode' );

如何更新特定id的wp_usermeta表

1 个答案: