--- On Tue, 12/15/09, Allen McCabe <allenmccabe@xxxxxxxxx> wrote:
> From: Allen McCabe <allenmccabe@xxxxxxxxx>
> Subject: Class not functioning
> To: "phpList" <php-general@xxxxxxxxxxxxx>
> Date: Tuesday, December 15, 2009, 6:17 AM
> Hey everyone, I just delved into
> classes recently and have been having
> moderate success so far.
>
> I have a puzzler though.
>
> I have the following class decalred and instantiated:
>
> class Notify {
> var $q = array();
>
> public function addtoQ($string, $class)
> {
> $message = '<span class="'. $class .'">'.
> $string .'</span>';
> $this->q[] = $message;
> }
>
> public function printQ()
> {
> if (isset($q))
> {
> echo '<p align="center"
> class="notification">';
> foreach($this->q as $msg)
> {
> echo $msg ."\n";
> }
> echo '</p>';
> }
>
> return;
> }
>
> function __destruct()
> {
> if (isset($q))
> {
> unset($this->q);
> }
> }
> } // END CLASS Notify
>
>
> And in my script, I call it like so:
> $Notif = new Notify;
>
> I have run other statements in other classes that should be
> adding to the $q
> array (ie. Notify::addtoQ('ERROR! There Was An Error
> Updating The
> Database!', 'error');)
>
> However, when I try to get my webpage to display them
> using:
>
> $Notify->printQ();
>
> it does not seem to want to loop through this array (and
> print the
> messages). I am getting NO error message, in fact
> everything 'looks' fine,
> I'm just not seeing the appropriate message.
>
> Any help would be appreicated!
>
Allen,
You have made a small typing mistake in function printQ() where you would like to checked the array for its existence. By mistake you have wrote "if (isset($q))". But your array variable is not an freely accessible array,the array is embedded into an object. So, you have to write the like "if (isset($this->q))".
Another point, you can't add a message into the array by calling the member function addtoQ() using scope resolution operator "::". If you really want to add message into the array, you have to call the member function from within the object. (ie. $Notif->addtoQ('ERROR! There Was An Error Updating The Database!', 'error');).
---
নির্মাল্য লাহিড়ী [Nirmalya Lahiri]
+৯১-৯৪৩৩১১৩৫৩৬ [+91-9433113536]
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