variable problem

[raffael3d]

I want to update a database. the problem is the following:
the variable $id is ported successfully in the URL (method post)

I use form action PHP_self?update=$id etc.

I can see the varibale in the browser URL line.
but when it comes that it should enter data into the database it doesn't work. also I can't print $id. nothing shows up.

$query=mysql_query("UPDATE jobs SET '$title' WHERE id=$updating");

if I put instead of $updating a number (e.g. 10) it works, it updates the database. but with a variable it doesn't work...
can anybody help me?

[the_Igel]

"I use form action PHP_self?update=$id etc. "
"$query=mysql_query("UPDATE jobs SET '$title' WHERE id=$updating");"

In the URL variable's called UPDATE, and in query - UPDATING.

Another thing to check is register_globals on/off.