php - error in mysql insert query in MYSQL 5.6.12 -

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i tried use following code insert,

$op=$_post["ans"]; $username=$_get["username"];  mysql_query("insert $username values('q3','$op')") or die(mysql_error());

but got following error:

you have error in sql syntax; check manual corresponds mysql server version right syntax use near 'values('q1','wrong')' @ line 1

why getting error? how can fix it?

your query structure not making sense. you're inserting $username? that's not name of table, it?

mysql_query("insert `tablename` values('q3','" . mysql_real_escape_string($op) . "')") or die(mysql_error());

always careful escape , user data being put queries, , please, please stop using mysql_query in new code.


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