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TigerDE2
Joined: 04 Jan 2003
Posts: 53
Location: Germany, Erfurt
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 Posted: Fri Mar 07, 2003 3:40 pm Post subject: Having troubles with variables - help! :) |
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Hi!
I have some serious problems with vars:
I have three files, /main.php, /c/con.php and /c/func.php
They look like the following:
/main.php
| Code: |
<?php
include('./c/con.php');
include('./c/func.php');
dosth();
?>
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/c/con.php
| Code: |
<?php
$text = "Hello World";
?>
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/c/func.php
| Code: |
<?php
function dosth () {
echo $text;
}
?>
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If I run /main.php now, nothing happens.
If I change it into dosth($text); in /main.php
and function dosth($msg) { echo $msg; } in /c/func.php,
it works.
Why?
Is there a way to get it working as it does without parameter?
Thanks.
Christian
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dtdgoomba
Joined: 05 Aug 2002
Posts: 179
Location: Cambridge, MA
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| Posted: Fri Mar 07, 2003 4:04 pm Post subject: |
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i think if you put
global $text;
above your echo text in the function it may work...
a function is in a differenct "scope" than the things outside of it from what I was told from friends so that's why you have to say in your function that you are going to grab the variables defined somewhere outside.
that's why you see them in the b2functions. I know this is a pretty lame description to real programmers so someone can follow this up and explain it a little better than I can... yeah, i went to mit but wasn't a comp sci guy so.... |
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TigerDE2
Joined: 04 Jan 2003
Posts: 53
Location: Germany, Erfurt
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| Posted: Fri Mar 07, 2003 4:13 pm Post subject: Thanks. |
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Well, it worked. Thank you.
But how would you define a global var inside a function then?
I mean, one, that can be accessed from outside the function, too...
_________________
Make me happy.
Correct my awful grammar and spelling mistakes...
-----
b2 is now WordPress.
Names change, excellence remains. Go, change. |
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nilson
Joined: 06 Jun 2003
Posts: 9
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| Posted: Fri Jun 06, 2003 6:05 pm Post subject: |
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Try:
| Code: |
$_GLOBAL['varname'];
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But is the variable is declared in the fuction, it is not available at all until the fuction is executed.
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