对
PHP用于测试给定密码的强度,最高强度为100感兴趣的小伙伴,下面一起跟随编程之家 jb51.cc的小编两巴掌来看看吧!
/**
* PHP用于测试给定密码的强度,最高强度为100
*
* @param
* @arrange 512-笔记网: www.www.jb51.cc
*/
function password_strength($string){
$h = 0;
$size = strlen($string);
foreach(count_chars($string,1) as $v){
$p = $v / $size;
$h -= $p * log($p) / log(2);
}
$strength = ($h / 4) * 100;
if($strength > 100){
$strength = 100;
}
return $strength;
}
var_dump(password_strength(Correct Horse Battery Staple));
echo <br>;
var_dump(password_strength(Super Monkey Ball));
echo <br>;
var_dump(password_strength(Tr0ub4dor&3));
echo <br>;
var_dump(password_strength(abc123));
echo <br>;
var_dump(password_strength(sweet));
/*** 来自编程之家 jb51.cc(jb51.cc) ***/