php - the function on Model doesn't work well -

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i wanna ask validation on yii. i've put validation on model :

public function cekdigit($attribute,$params)     {         $subject=substr($attribute,0,2);         $pattern=$this->string2;         if ($subject!==$pattern)             {                 $this->adderror($attribute, $params['message']);                 return false;             }     }

while ran that, turned on error message, condition true. meant, when put same string (which matched) still got error. how can fix becomes valid condition?

thanks

instead of if ($subject!==$pattern)

you might want use if (strcmp($subject,$pattern) == 0)


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