OM_Zen points out the direct problem, but you have at least one more. By not using bind parameters when you prepare the query, you're opening yourself to the possibility of someone corrupting your query. A username of 
    gotcha'; delete * from user

[download]
could really spoil your day. At the very least, you need to taint-check any input you're getting.

In reply to Re: cookies by dws
in thread Trouble with cookies being used for validation (was: cookies) by r_mehmed

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