session variables inside functions

[pablodelapena]

is this possible? im finding its not, i.e if i try and determine whether a username variable (set by session_register('username') it says there aint no username?!

is it possible to state a variable outside a function and then use it inside it? if not how do i get around it?

[suntra]

You can use global $variable_name in your function or use $GLOBALS["variable_name"]

Also, you could use $SESSION["variable_name"] BUT.... BUT... BUT... if you use $SESSION, you MUST NOT use session_register()...

[pablodelapena]

hate to be a newbie, but i dont understand global variables!!!!:S:S

Any chane of a small explanation?

or would i be right using this?

function example(){
la di da, code etc
}
GLOBAL $variable

that correct?

Or something that hit me now:

function example($variable) {
...
}

would that work also? or am I totally off course

and while im here. whats the advantage of globalising variables? and what does it mean exactly?

🙂 merci!

[suntra]

<?
 $name = "Suntra";
 function Write_Name() {
      echo $name; // won't work...
 }
 function Write_Name2() {
      global $name;
      echo $name; // will work... will echo "Suntra"
 }
 function Write_Name3() {
      echo $GLOBALS["name"]; // will work... will echo "Suntra"
 }
?>

[pablodelapena]

thanks, but I got it to work by using this, although tis probably more efficient to use globals? yeah>

$name = "suntra";

function MyName($name) {
echo "$name";
}

yeay! I'll bear Globals in mind for the future though