Newbie: variables in function

[Leijonamieli]

<?php
$text= "hmm";

function foo() {
var_dump($text);
}

foo();
?>

How do I access $text? This only prints NULL.

 

[rockstardub]

Is this what you want?

<?

$GLOBALS[text]= "hmm";

function foo() {
var_dump($GLOBALS[text]);
}

foo();

?>

 

[vacunita]

Either that or you have to explicitly pass the variable into the function

$text= "hmm";

function foo($var) {
var_dump($var);
}

foo($text);

For you see, variables have scope, that is trhey have certain places where they exist, unless you use rockstardub's suggestion and make them global.



----------------------------------
Ignorance is not necessarily Bliss, case in point:
Unknown has caused an Unknown Error on Unknown and must be shutdown to prevent damage to Unknown.

 

[rockstardub]

Please help.

 

[Vragabond]

Hard to say what exactly is the best solution in your case, however, I would probably do something like:

<?php
$text= "hmm";

function foo() 
{
   [b]global $text;[/b]
   var_dump($text);
}

foo();
?>

Which will pull $text from outside the function. Read more on variable scope in PHP manual:

http://at.php.net/global

 

[sleipnir214]

The problem is that the interior of a function has a different variable scope.

See

http://www.php.net/manual/en/language.variables.scope.php

for a full explanation.

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