error details in php

[vinpkl]

hi all

i get error message "not updated"

if(mysql_query($qry))
{
$msg = "updated";
}
else
{
$msg = "not updated";
} 

But this code doesnt let tell me what and where the problem is.

so i would like to know where should i put the below code on my page
(Before calling db_connection file or after calling db_connection file)

error_reporting(E_ALL); 

so that it tell me details of error.

vineet