密碼是一種用來混淆的技術,使用者希望將正常的(可識別的)資訊轉變為無法辨識的資訊。但這種無法辨識的資訊部分是可以再加工並恢復和破解的。密碼在中文是「口令」(password)的通稱。登入網站、電子郵件信箱和銀行提款時輸入的“密碼”其實嚴格來講應該僅被稱作“口令”,因為它不是本來意義上的“加密代碼”,但是也可以稱為秘密的號碼。其主要限定於個別人理解(如一則電文)的符號系統。如密碼電報、密碼式打字機。
這篇文章主要介紹了php實現隨機生成易於記憶的密碼,實例分析了php生成隨機密碼的相關技巧,需要的朋友可以參考下
這裡通過預定義一些單詞,讓php隨機從這些單字中選擇進行組合產生密碼
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...
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