Get started with functions

[Anon]

<?
/ the problem is that how can get some variables from functions am I doing
something totally wrong???? or I did'nt read enough manual
/
$other = 'text is empty';

function my_problem(){
$test = 'problem is ...';
$retry = "sometimes when I'm drunk";
echo "$test "; //$test gives me here value problem is... BUT THAT'S IT
global $test;
}

function same_problem() {
echo "$test"; //how can I get values from my_problem into this function ?????
//here $test gives me nothing
echo "$other";
// here $other gives me nothing
}
my_problem();
same_problem();
echo "$retry";

?>

[Anon]

hmm..

i'm not quite sure what you expect the first function to do.... you're only printing out $test, which is "the problem is..."

firstly, declare global $test at the top of your function (ie. before you start assigning stuff to it)

secondly, you should be able to solve most (all?) problems without resorting to global variables anyway. Instead, pass all the variables you want using to the function, get the new values returned or just pass the variables by reference....

eg. pass by reference

function first_function($test) {
$test .= "Cheese";
}

function second_function($test) {
$test .= "'n'Chuff";
}

$stuff = "I like ";
first_function(&$stuff);
second_function(&$stuff);
echo $stuff;

displays "I like Cheese'n'Chuff"

alternatively you can return the value from the first function and give it to the second.

If you really want to use globals, then do it this way

function first_function() {
global $test;

... stuff to $test ...

}

function second_function() {
global $test;

... stuff to $test ...
}

then call the functions and $test will be globally changed.

hope this helps

dom
🙂