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[Haxalot]

You could have used the empty() function instead of

PHP Code:

If ($_POST["text"] == "" || $_POST["pass"] == ""){ echo '<script>alert("Please enter something into the text boxes!")</script>'; 


Technically speaking, empty is a language construct, not a function. The most obvious difference between a language construct (that requires parenthesis) and a function is that you are unable to have a variable as a name for it (unlike in a function).

PHP Code:

$a = 'empty';
if($a($_POST['b'])) #invalid

$c = 'trim';
$d = $c($_POST['b']); #valid 


$c is known as a variable function now.

@BreShiE, there's no need for you to question if there is input in the third IF statement because the ELSE part of the second IF statement will make sure of that.