Speaking of placeholders. Playing around here. Just conceptualizing.

Probably been done a million times before

Can something sort of like this this work for automatically selecting the fields needing updating?

Run a select * using user_id returning one record and load values into the $oldxxx variables then compare to the values submitted in the update query. 

            $placeholders;
            $replacement-fields;
            
            
            if ($password <> $oldpassword){
              $placeholders = $placeholders . "?,";
              $replacement-fields = $replacement-fields . "password = 
+'$password',";   
            }
            if ($forename <> $oldforename)){
              $placeholders = $placeholders . "?,";
              $replacement-fields = $replacement-fields . "forename = 
+'$forename',;
            }
            if ($lastname.value <> $oldlastname){
              $placeholders = $placeholders . "?,";
              $replacement-fields = $replacement-fields . "lastname = 
+'$lastname',";   
            }
            if ($business <> $oldbusiness){
              $placeholders = $placeholders . "?" 
              $replacement-fields = $replacement-fields . "business = 
+'$business',";   
            }
            if ($city <> $oldcity){
              $placeholders = $placeholders . "?," 
              $replacement-fields = $replacement-fields . "city = '$ci
+ty',";   
            }
            if ($zip <> $oldzip){
              $placeholders = $placeholders . "?,"   <----------------
+----------
              $replacement-fields = $replacement-fields . "zip = '$zip
+',";  <--- Problem with last , from last field requiring update. Pull
+ that off before using the two variables   
            }
            
            
           $query = "UPDATE users SET $placeholders where user_id = '$
+user_id'";

           $sth = $dbh->prepare($query);

           $sth->execute($replacement-fields) or die "Unable to execut
+e query: " . $sth->errstr;

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In reply to Re^4: CGI Action call by tultalk
in thread CGI Action call by tultalk

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