Whats the difference

[oo7ml]

if ($username == $susername and $password == $spassword) 

and

if ($username == $susername & $password == $spassword) 

Is there a better method

[PineSolPirate]

http://www.php.net/manual/en/languag...rs.logical.php

No real difference.
No alternative I know of.

I use two &'s, but one works too.

Correction The '&&' operator has higher precedence than the 'and' operator.

[redhatlook]

this code is wrong

if ($username == $susername & $password == $spassword)

& is a bitwise operator
&& is a logical operator

[MrCoder]

Make sure all the values are typecasted as strings.

If the client passed the username of "0" and the password of "0" this could match since strings when compared with == will concate to the numeric value of 0.

This is quite advanced but it is something to look out for, always compare with === insted of == if you know what type of value you are comparing.