Extremely basic PHP help needed. - GoFuckYourself.com

chodadog · 01-19-2003, 01:14 AM

Okay, i've already got this..

PHP Code:


			
<?php echo $HTTP_GET_VARS['w']; ?>

Which is fine, but i'd like some sort of if/else thingy. Example, if w is null (index.php?w=), then make w=9999999 or if the w variable isn't passed at all (index.php), then make w=9999999.

Hopefully that actually makes sense. I'm so very clueless when it comes to this shit.

psyko514 · 01-19-2003, 01:20 AM

PHP Code:


			
<? if (!isset($w)) { $w = 999999; } ?>

SilverTab · 01-19-2003, 01:22 AM

If w is a variable you can check with

if (empty($w))
{
...
}
else
{
...
}

not sure if I get what you mean tough!

chodadog · 01-19-2003, 01:36 AM

SilverTab, thanks. That's exactly what i was looking for. psyko, thanks too, but not exactly sure what to do with what you gave me! But thanks anyways. Sorry for being so unclear in the first place.

SilverTab · 01-19-2003, 01:50 AM

Np !...glad I could be helpful

psyko514 · 01-19-2003, 01:58 AM

Chodadog... the isset() function checks to see if the variable has been set (if it has a value). if so, it gives a result of TRUE.

the code i posted checks to see if W has been given a value, and if not, it gives W a value of 99999 or whatever else you want.

i posted it in one line, but it could be broken into several lines

PHP Code:


			
<?php

if (!isset($w)) {

   $w = 999999; 

} 

?>

the empty() function does more or less the same thing... except that if W = 0, isset() will return TRUE but empty() will return FALSE

SilverTab · 01-19-2003, 02:12 AM

Quote:

Originally posted by psyko514

the empty() function does more or less the same thing... except that if W = 0, isset() will return TRUE but empty() will return FALSE

Yup..Always more than one ways to get to the same result in programming

Cogitator · 01-19-2003, 02:39 PM

I always create a function like:

PHP Code:


			
<?

function GetValue($var, $default) {

    if (isset($var) {

        return $var;

    } else {

        return $default;

    }

}

?>



// you would use it as follows:



<?

echo GetValue($w, 999999);

?>

Bad B0y · 01-19-2003, 03:03 PM

another way(not tested btw) just cuz i have nothing better to do after i've watered the plants and taken my special pills.

$w = empty($w) ? 999999 : $w;

01-19-2003, 01:14 AM	#1
chodadog Confirmed User Join Date: Apr 2002 Posts: 9,736	Extremely basic PHP help needed. Okay, i've already got this.. PHP Code: `<?php echo $HTTP_GET_VARS['w']; ?>` Which is fine, but i'd like some sort of if/else thingy. Example, if w is null (index.php?w=), then make w=9999999 or if the w variable isn't passed at all (index.php), then make w=9999999. Hopefully that actually makes sense. I'm so very clueless when it comes to this shit.

01-19-2003, 01:20 AM	#2
psyko514 See sig. Join Epic Cash. Join Date: Oct 2002 Location: Montreal, Quebec. ICQ: 214702014 Posts: 22,366	PHP Code: `<? if (!isset($w)) { $w = 999999; } ?>`

01-19-2003, 01:22 AM	#3
SilverTab Confirmed User Join Date: Nov 2001 Location: MTL Posts: 5,060	If w is a variable you can check with if (empty($w)) { ... } else { ... } not sure if I get what you mean tough! __________________ mmm my sig was too big... no more cool animation but hey still! need php? ICQ: 94586959

01-19-2003, 01:50 AM	#5
SilverTab Confirmed User Join Date: Nov 2001 Location: MTL Posts: 5,060	Np !...glad I could be helpful __________________ mmm my sig was too big... no more cool animation but hey still! need php? ICQ: 94586959

01-19-2003, 01:58 AM	#6
psyko514 See sig. Join Epic Cash. Join Date: Oct 2002 Location: Montreal, Quebec. ICQ: 214702014 Posts: 22,366	Chodadog... the isset() function checks to see if the variable has been set (if it has a value). if so, it gives a result of TRUE. the code i posted checks to see if W has been given a value, and if not, it gives W a value of 99999 or whatever else you want. i posted it in one line, but it could be broken into several lines PHP Code: `<?php if (!isset($w)) { $w = 999999; } ?>` the empty() function does more or less the same thing... except that if W = 0, isset() will return TRUE but empty() will return FALSE

01-19-2003, 01:36 AM	#4
chodadog Confirmed User Join Date: Apr 2002 Posts: 9,736	SilverTab, thanks. That's exactly what i was looking for. psyko, thanks too, but not exactly sure what to do with what you gave me! But thanks anyways. Sorry for being so unclear in the first place.

01-19-2003, 02:39 PM	#8
Cogitator Confirmed User Join Date: Feb 2002 Location: Florida Posts: 672	I always create a function like: PHP Code: `<? function GetValue($var, $default) { if (isset($var) { return $var; } else { return $default; } } ?> // you would use it as follows: <? echo GetValue($w, 999999); ?>` __________________ - this space intentionally left blank -

01-19-2003, 03:03 PM	#9
Bad B0y Confirmed User Join Date: Aug 2002 Posts: 160	another way(not tested btw) just cuz i have nothing better to do after i've watered the plants and taken my special pills. $w = empty($w) ? 999999 : $w;