When using mysql to check for a value, it doesn't return anything? [on hold]

So, I have a mysql table named: "cake_users" Here's what it looks like and how it's structured 1 name1 4588yrue38r authkey114 2 name2 4o857398563 authkey124 3 name3 93784ee8753 authkey115 4 name4 12345678910 authkey164 id, name, hwid, authkey I'm trying to run this query: $hwidid = "'12345678910'"; $cakequery = mysql_query("SELECT * FROM cake_users WHERE hwid = {$hwidid}"); if(mysql_num_rows($cakequery) == 0) { echo 'FALSE'; } else { echo 'TRUE'; } But it always echo's false even though 12345678910 is in the database? What am I doing wrong?