密码是一种用来混淆的技术,使用者希望将正常的(可识别的)信息转变为无法识别的信息。但这种无法识别的信息部分是可以再加工并恢复和破解的。密码在中文里是“口令”(password)的通称。登录网站、电子邮箱和银行取款时输入的“密码”其实严格来讲应该仅被称作“口令”,因为它不是本来意义上的“加密代码”,但是也可以称为秘密的号码。其主要限定于个别人理解(如一则电文)的符号系统。如密码电报、密码式打字机。
这篇文章主要介绍了php实现随机生成易于记忆的密码,实例分析了php生成随机密码的相关技巧,需要的朋友可以参考下
这里通过预定义一些单词,让php随机从这些单词中选择进行组合生成密码
function random_readable_pwd($length=10){
// the wordlist from which the password gets generated
// (change them as you like)
$words = 'dog,cat,sheep,sun,sky,red,ball,happy,ice,';
$words .= 'green,blue,music,movies,radio,green,turbo,';
$words .= 'mouse,computer,paper,water,fire,storm,chicken,';
$words .= 'boot,freedom,white,nice,player,small,eyes,';
$words .= 'path,kid,box,black,flower,ping,pong,smile,';
$words .= 'coffee,colors,rainbow,plus,king,tv,ring';
// split by ",":
$words = explode(',', $words);
if (count($words) == 0){ die('wordlist is empty!'); }
// add words while password is smaller than the given length
$pwd = '';
while (strlen($pwd) < $length){
$r = mt_rand(0, count($words)-1);
$pwd .= $words[$r];
}
// append a number at the end if length > 2 and
// reduce the password size to $length
$num = mt_rand(1, 99);
if ($length > 2){
$pwd = substr($pwd,0,$length-strlen($num)).$num;
} else {
$pwd = substr($pwd, 0, $length);
}
return $pwd;
}
//使用范例:
random_readable_pwd(10) => returns something like: pingwater6, radiohap28, sunwhite84, happykid44, etc...
以上就是php 随机生成易于记忆的密码实例代码的详细内容。