Very basic function() related problem !!!

[rahul.pache]

I am using XAMPP {PHP 5}

Here is the code :

 

 <?php
$var=0;
function test() {
echo "<br> VAr : " . $var;
$var = 1;
echo "<br> VAr : " . $var;
}
test();
if($var == 1) {
  echo "Hello";
}
?>

 

I have taken 1 variable $var = 0; outside the function

And I want to use it inside the function. So that after changing its value it will be available to print "hello"

 

Plz suggest how to do that.

I WILL BE VERY VERY THANKFULLLLLLL

[friedemann_bach]

You might try this:

 

<?php

$var=0;

function test() {

$GLOBALS['var'] = 1;

}

test();

if($var == 1) {

echo "Hello";

}

?>

 

[rahul.pache]

YES its working.

Thanx

 

BUT is it correct to use global variables ?

Coz i have heard somewhere not to use global variables.  And I dont know why ?

[friedemann_bach]

Depending on your needs, maybe this is a more elegant way:

 

<?php

$var = 0;

function test($my_var) {

  $my_var = 1;

}

test(&$var); // a pointer at $var is given to your function

if($var == 1) {

echo "Hello";

}

?>