Question

How to edit unique field value in mysql database? if I edit it in phpmyadmin i get what i need, but if i do this from .php by form my field doesn’t edites( Whats wrong ?

here is sql code

$result = mysql_query ("UPDATE client SET Code='$Code', FirstName='$FirstName', LastName='$LastName', DateBirth='$DateBirth', Other='$Other' WHERE Code=$Code");

Answer 1

As I’ve already told you in my comment, your query is a nonsense, because you’re trying to update unique field Code with the same value it’s already inside!!
If you’re trying to update customer infos, you should do:

UPDATE client SET 
    FirstName = '$FirstName', 
    LastName  = '$LastName', 
    DateBirth = '$DateBirth', 
    Other     = '$Other' 
WHERE Code = $Code

If you need to change code, you should assign it a different value

UPDATE client SET 
    Code      = $newCode,
    FirstName = '$FirstName', 
    LastName  = '$LastName', 
    DateBirth = '$DateBirth', 
    Other     = '$Other' 
WHERE Code = $Code

Note that if Code column is a string, you should use '$Code' everywhere…