Re: problem using &&

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On Wed, 26 Jul 2006 13:54:15 +0200, Jochem Maas <jochem@xxxxxxxxxxxxx> wrote:
> php@xxxxxxxxx wrote:
>>
>>
>> On Wed, 26 Jul 2006 13:22:02 +0200, Jochem Maas <jochem@xxxxxxxxxxxxx>
> wrote:
>>> php@xxxxxxxxx wrote:
>>>> Hi
>>>> I am reading a username and password from a file. For the moment I am
>>> trying to test if the username and password are the same as user
> inputted
>>> username/password.
>>>> My code snippet is as follows:
>>>> if( $out[0][0] == $u && $out[0][1] == $p ) {
>>>
>>>
>>>> 			$error = "Login successful!";
>>>> 		}
>>>> 	else {
>>>> 			$error = "Invalid username/password. Try again";
>>>> 		}
>>>>
>>>> $out[] is an array containing the file data.
>>>> $u is the form username and $p the password.
>>>> I echo both values once submitted. Even when they match I get invalid
>>> username/password message.
>>>> If I just test if( $out[0][1] == $u ) it works.
>>> take a REALLY GOOD LOOK at your [compound] if statement
>>> (hint: what are you checking against $out[0][1]?)
>>
>> Sorry, that was a typo.
> 
> I'm sure it was; and I'm sure that you have lots of typos.

huh?

> here is test code that proves that if what you say it true regarding
> the contents/structure of $out, $u and $p then when the relevant values
> match you
> will get the "Login Successful!" message; seeing as you are not it means
> you
> are testing the wrong variables or something:
> 
> // CODE
> $out = array(array("user","pwd")); $u = "user"; $p = "pwd";
> if($out[0][0] == $u && $out[0][1] == $p) {
> 	echo "Match\n";
> } else {
> 	echo "No Match!";
> }
> // OUTPUT
> //Match!
> 
> 
>> $out[0][1] is the password. Should have read:
>> if( $out[0][1] == $p )
>> So that works, once i add the && $out[0][0] == $u
>> it no longer works, even though my echo shows both values are the
> same...
> 
> do you know the difference between print_r(), var_dump() and echo?
> try:
> 
> var_dump($out, $u, $p, (" user " == "user"));

Thanks, I will try your suggestions.

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