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我已經放在一起這個小腳本,它使用一個單詞列表來生成一個可讀的密碼。PHP生成隨機密碼
代碼的第一部分通過生成單詞和數字而正常工作。問題在於最後的符號似乎每隔一段時間都會有效。
<?php
function random_readable_pwd($length=10){
// the wordlist from which the password gets generated
// (change them as you like)
$words = 'AbbyMallard,AbigailGabble,AbisMal,Abu,Adella,TheAgent,AgentWendyPleakley,Akela,AltheAlligator,Aladar,Aladdin,AlamedaSlim,AlanaDale,Alana,Alcmene,Alice,AmeliaGabble,AmosSlade,Amphitryon,AnastasiaTremaine,Anda,Andrina,Angelique,AngusMacBadger';
// 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];
}
$num = mt_rand(1, 99);
if ($length > 2){
$pwd = substr($pwd,0,$length-strlen($num)).$num;
} else {
$pwd = substr($pwd, 0, $length);
}
$pass_length = strlen($pwd);
$random_position = rand(0,$pass_length);
$syms = "[email protected]#$%^&*()-+?";
$int = rand(0,51);
$rand_char = $syms[$int];
$pwd = substr_replace($pwd, $rand_char, $random_position, 0);
return $pwd;
}
?>
<html><head><title>Password generator</title></head>
<body>
<h1>Password generator</h2>
<p>
<?php
echo random_readable_pwd(10);
?>
</p>
</body>
</html>
提示:用'mt_rand替換'蘭特()'()'。第一個是知道產生非常差的隨機性。 –
'mt_rand()'在加密使用中也是一個糟糕的選擇。改爲使用'openssl_random_pseudo_bytes()'。請參閱http://us2.php.net/manual/en/function.mt-rand.php#refsect1-function.mt-rand-notes上的說明 –