Php类唯一数据成员

Question

I'm really new in PHP, our instructor just teaching us C++ OOP and I want to try it on PHP.

I'm creating objects with my class.

class TwitterUser {

    private $twittername;
    public function TwitterUser($a)
    {
        $this->twittername = $a;
        // echo $this->twittername;


    }

}



  $reader = new Spreadsheet_Excel_Reader($target_path);

$veriler = $reader->sheets[0]['cells'];
foreach($veriler as $veri)
{
if(!empty($veri[$sutun]) and $veri[$sutun]!="Twitter")
    {
    $kisiler[] = new TwitterUser(temizle($veri[$sutun]));

    }
}

What I want is, if one object has same string with other object in $twittername data member, don't create new object.

Answer 1

This task is usually done using some kind of Model -> database approach (such as Doctrine), in which case you save the model data into database. The database table should be designed to not allow the same name for more than one record and the logic to enforce and error handle this can be built into the model class.

You can achieve the same by pure PHP, but it requires existing instances to be stored somehow so when creating new instances, existing ones can be checked for uniqueness.