[php]PHP判断密码强度实例

<?php 
function codes($str){ 
$score = 0; 
           if(preg_match("/[0-9]+/",$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 ++; 
           } 
           return $score; 
} 
echo codes("1VBBaabv111_"); 
?>