[SOLVED] OOP function to return variable

[peranha]

Is there a way to return a variable from a function inside a class?

 

Ex.

 

<?php
//  Function to retrieve user name.
public function retrieve_username($userid) {
	$ruq = mysql_query("SELECT user_name FROM " . $this->pre . "users WHERE user_id = '{$userid}'");
	$r = mysql_fetch_array($ruq) or die(mysql_error());
	$username = $r[0];
	return $username;
}
?>

 

Then I need to use the variable $username in another function.

 

if I echo $username in the function, it will display "peranha", but if I echo $username on the page itself, it doesnt return anything. 

[corbin]

Methods that are not constructors can return values.

 

 

 

The problem must be in your usage, or username is not set.

[peranha]

Here is my usage.

 

<?php
$profile->retrieve_username($userid);
echo $username;
?>

 

if I change the functio to

 

<?php
//  Function to retrieve user name.
   public function retrieve_username($userid) {
      $ruq = mysql_query("SELECT user_name FROM " . $this->pre . "users WHERE user_id = '{$userid}'");
      $r = mysql_fetch_array($ruq) or die(mysql_error());
      $username = $r[0];
      echo $username;
   }
?>

 

"peranha" is outputted to the screen, so $username is set, just wont return with return $username.  Am I not using it right?

[Daniel0]

It returns a value just like all other methods/functions do.

 

You need to store that return value somewhere, e.g.

$username = $profile->retrieve_username($userid);
echo $username;

 

You need to lookup the word "scope" in the manual.

[peranha]

Thanks, cant believe I forgot to set the variable on the main page.