Question

我正在开发一个'updateProfile'网络服务，用户可以更新一个或多个字段，我对如何构建查询感到困惑。我想我可以有多个if isset条件并根据需要在查询上保持一致。但是，我会遇到一个问题，即不知道哪些是提前发布的，因此不知道是否包括AND或逗号等。这是我的出发点：

$UpdateTradesman_Query= "UPDATE Tradesmen SET ";
            if(isset($_REQUEST['FName'])){
                $FName=mysql_real_escape_string($_POST['FName']);
                $UpdateTradesman_Query.= "FName ='".$FName."'";
            }
            if(isset($_REQUEST['SName'])){
                $SName=mysql_real_escape_string($_POST['SName']);
                $UpdateTradesman_Query.= "SName ='".$SName."'";
            }
            if(isset($_REQUEST['Email'])){
                $Email=mysql_real_escape_string($_POST['Email']);
                $UpdateTradesman_Query.= "Email ='".$Email."'";
            }
            if(isset($_REQUEST['HomePhone'])){
                $HomePhone=mysql_real_escape_string($_POST['HomePhone']);
                $UpdateTradesman_Query.= "HomePhone ='".$HomePhone."'";
            }
            if(isset($_REQUEST['Mobile'])){
                $Mobile=mysql_real_escape_string($_POST['Mobile']);
                $UpdateTradesman_Query.= "Mobile ='".$Mobile."'";
            }
            if(isset($_REQUEST['Trade'])){
                $Trade=mysql_real_escape_string($_POST['Trade']);
                $UpdateTradesman_Query.= "Trade ='".$Trade."'";
            }
            if(isset($_REQUEST['Address'])){
                $Address=mysql_real_escape_string($_POST['Address']);
                $UpdateTradesman_Query.= "Address ='".$Address."'";
            }
            if(isset($_REQUEST['County'])){
                $County=mysql_real_escape_string($_POST['County']);
                $UpdateTradesman_Query.= "County ='".$County."'";
            }
            if(isset($_REQUEST['PostCode'])){
                $PostCode=mysql_real_escape_string($_POST['PostCode']);
                $UpdateTradesman_Query.= "PostCode ='".$PostCode."'";
            }
            if(isset($_REQUEST['Photo'])){
                $Photo=mysql_real_escape_string($_POST['Photoe']);
                $UpdateTradesman_Query.= "Photo ='".$Photo."'";
            }
            if(isset($_REQUEST['Profile'])){
                $Profile=mysql_real_escape_string($_POST['Profile']);
                $UpdateTradesman_Query.= "Profile ='".$Profile."'";
            }
            if(isset($_REQUEST['Qualification'])){
                $Qualification=mysql_real_escape_string($_POST['Qualification']);
                $UpdateTradesman_Query.= "Qualification ='".$Qualification."'";
            }
            if(isset($_REQUEST['AvailabilityTimes'])){
                $AvailabilityTimes=mysql_real_escape_string($_POST['AvailabilityTimes']);
                $UpdateTradesman_Query.= "AvailabilityTimes ='".$AvailabilityTimes."'";
            }   

            $UpdateTradesman_Query.= "WHERE TradesmanID=".$TradesmanID;
            echo $UpdateTradesman_Query;
            if (mysql_query($UpdateTradesman_Query)){
                $status= 'OK';
                $message= 'null';
                $Update= "OK";
            }
            else{

                $status= 'Not OK';
                $message= 'Error: Query Unsuccessful.'. mysql_error();
                $Update= "Not OK";
            }

我还必须考虑到，如果用户选择更新用户名或电子邮件，我将必须确保a）该电子邮件尚未与另一个帐户（已在数据库中）相关联或b）用户名还没有被采取。任何帮助赞赏。

Answer 1

从您目前拥有的内容开始，您可以添加标记并添加逗号，如：

$addcomma=false;

$UpdateTradesman_Query= "UPDATE Tradesmen SET ";
        if(isset($_REQUEST['FName'])){
            $FName=mysql_real_escape_string($_POST['FName']);
            $UpdateTradesman_Query.= "FName ='".$FName."'";
            $addcomma= true;
        }
        if(isset($_REQUEST['SName'])){
            $SName=mysql_real_escape_string($_POST['SName']);
            if($addcomma) $UpdateTradesman_Query.= ",";
            $UpdateTradesman_Query.= "SName ='".$SName."'";
            $addcomma= true;
        }
..etc..

如何更新行中的多个字段，而不知道要提前更新哪些字段

1 个答案: