[ In PHP, a variable or array element which has never been set is different from one whose value is null; attempting to access such an unset value is a runtime error. That’s what you’re running into: the array $_POST does not have any element at the key “username”, so the interpreter aborts your program … Read more
Notice: Undefined variable From the vast wisdom of the PHP Manual: Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not … Read more
Notice: Undefined variable From the vast wisdom of the PHP Manual: Relying on the default value of an uninitialized variable is problematic in the case of including one file into another which uses the same variable name. It is also a major security risk with register_globals turned on. E_NOTICE level error is issued in case of working with uninitialized variables, however not … Read more