PHP 判斷密碼強度

 

           $score = 0;

           if(preg_match("/[0-9]+/",$str))

           {

              $score ++; 

           }

           if(preg_match("/[0-9]{3,}/",$str))

           {

              $score ++; 

           }

           if(preg_match("/[a-z]+/",$str))

           {

              $score ++; 

           }

           if(preg_match("/[a-z]{3,}/",$str))

           {

              $score ++; 

           }

           if(preg_match("/[A-Z]+/",$str))

           {

              $score ++; 

           }

           if(preg_match("/[A-Z]{3,}/",$str))

           {

              $score ++; 

           }

           if(preg_match("/[_|\-|+|=|*|!|@|#|$|%|^|&|(|)]+/",$str))

           {

              $score += 2; 

           }

           if(preg_match("/[_|\-|+|=|*|!|@|#|$|%|^|&|(|)]{3,}/",$str))

           {

              $score ++ ; 

           }

           if(strlen($str) >= 10)

           {

              $score ++; 

           }

           echo "<br>";

           echo $score;