What is += used here? - Webmaster Forums - Webmaster forum for HTML, PHP, ASP, CSS and more

Kiubbo · 02-11-2009, 10:05 PM

I have the following code:

Code:

    function calculateRanking()
    {
        $created = $this->getCreated();
        
        $diff = $this->getTimeDifference($created, date('F d, Y h:i:s A'));
        
        $time = $diff['days'] * 24;
        $time += $diff['hours'];
        $time += ($diff['minutes'] / 60);
        $time += (($diff['seconds'] / 60)/60);

        $base = $time + 2;        
        
        $this->ranking = ($this->points - 1) / pow($base, 1.5);
        
        $this->save();
    }

The thing I do not understand is why in the $time there are += instead of just = ?

Also if someone can point me to where I can search for this dumb things, since I could find it on php.net with the firefox search.

Thanks a lot.