search
HomeBackend DevelopmentPHP Tutorialphp密码生成类实例_php技巧

本文实例讲述了php实现的密码生成类及其应用方法,分享给大家供大家参考。具体分析如下:

一、php密码生成类功能:

1.可设定密码长度。
2.可设定要生成的密码个数,批量生成。
3.可以指定密码的规则,字母,数字,特殊字符等。

二、用法:

GeneratePassword.class.php类文件如下:

<&#63;php 
/** Generate Password class,根据指定规则生成password 
*  Date:  2013-12-23 
*  Author: fdipzone 
*  Ver:  1.0 
* 
*  Func: 
*  public batchGenerate 批量生成密码 
*  private generate   生成单个密码 
*  private getLetter   获取字母  
*  private getNumber   获取数字 
*  private getSpecial  获取特殊字符 
*/ 
 
class GeneratePassword{ // class start 
 
  // 密码的规则 default 
  private $_rule = array( 
   'letter' => 1, 
   'number' => 1, 
   'special' => 1 
  );
 
  private $_length = 8;         // 密码长度 
  private $_num = 1;          // 密码数量 
  private $_special = '!@#$%^&*()_+=-'; //允许的特殊字符 
 
  /** 初始化 
  * @param int  $length 密码长度 
  * @param int  $num   密码数量 
  * @param Array $rule  密码规则 
  * @param String $special 允许的特殊字符 
  */ 
  public function __construct($length=8, $num=1, $rule=array(), $special=''){ 
 
    if(isset($length) && is_numeric($length) && $length>=4 && $length<=50){ // 长度 
      $this->_length = $length; 
    } 
 
    if(isset($num) && is_numeric($num) && $num>0 && $num<=100){ // 数量 
      $this->_num = $num; 
    } 
 
    if(isset($special) && is_string($special) && $special!=''){ // 特殊字符 
      $this->_special = $special; 
    } 
 
    if($rule){ // 规则 
 
      $t_rule = array(); 
 
      if(isset($rule['letter']) && in_array($rule['letter'], array(1,2,3,4,5))){ // 1:可选用 2:必须 3:必须小写 4:必须大写 5:大小写都必须 
        $t_rule['letter'] = $rule['letter']; 
      } 
 
      if(isset($rule['number']) && in_array($rule['number'], array(1,2))){ // 1:可选用 2:必须 
        $t_rule['number'] = $rule['number']; 
      } 
 
      if(isset($rule['special']) && in_array($rule['special'], array(1,2))){ // 1:可选用 2:必须 
        $t_rule['special'] = $rule['special']; 
      } 
 
      if($t_rule){ 
        $this->_rule = $t_rule; 
      } 
    } 
  } 
 
  /** 批量生成密码 
  * @return Array 
  */ 
  public function batchGenerate(){ 
    $passwords = array(); 
    for($i=0; $i<$this->_num; $i++){ 
      array_push($passwords, $this->generate()); 
    } 
    return $passwords; 
  } 
 
  /** 生成单个密码 
  * @return String 
  */ 
  private function generate(){ 
 
    $password = ''; 
    $pool = ''; 
    $force_pool = ''; 
 
    if(isset($this->_rule['letter'])){ 
 
      $letter = $this->getLetter(); 
 
      switch($this->_rule['letter']){ 
        case 2: 
          $force_pool .= substr($letter, mt_rand(0,strlen($letter)-1), 1); 
          break; 
 
        case 3: 
          $force_pool .= strtolower(substr($letter, mt_rand(0,strlen($letter)-1), 1)); 
          $letter = strtolower($letter); 
          break; 
 
        case 4: 
          $force_pool .= strtoupper(substr($letter, mt_rand(0,strlen($letter)-1), 1)); 
          $letter = strtoupper($letter); 
          break; 
 
        case 5: 
          $force_pool .= strtolower(substr($letter, mt_rand(0,strlen($letter)-1), 1)); 
          $force_pool .= strtoupper(substr($letter, mt_rand(0,strlen($letter)-1), 1)); 
          break; 
      } 
 
      $pool .= $letter; 
    } 
    if(isset($this->_rule['number'])){ 
 
      $number = $this->getNumber(); 
 
      switch($this->_rule['number']){ 
        case 2: 
          $force_pool .= substr($number, mt_rand(0,strlen($number)-1), 1); 
          break; 
      } 
 
      $pool .= $number; 
    } 
 
    if(isset($this->_rule['special'])){ 
 
      $special = $this->getSpecial(); 
 
      switch($this->_rule['special']){ 
        case 2: 
          $force_pool .= substr($special, mt_rand(0,strlen($special)-1), 1); 
          break; 
      } 
      $pool .= $special; 
    } 
 
    $pool = str_shuffle($pool); // 随机打乱 
 
    $password = str_shuffle($force_pool. substr($pool, 0, $this->_length-strlen($force_pool))); // 再次随机打乱 
 
    return $password; 
  } 
 
  /** 字母 */ 
  private function getLetter(){ 
    $letter = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz'; 
    return $letter; 
  } 
 
  /** 数字 */ 
  private function getNumber(){ 
    $number = '1234567890'; 
    return $number; 
  } 
 
  /** 特殊字符 */ 
  private function getSpecial(){ 
    $special = $this->_special; 
    return $special; 
  } 
} // class end 
 
&#63;> 

demo示例程序如下:

<&#63;php 
require 'GeneratePassword.class.php'; 
 
$rule = array( 
  'letter' => 5, // 必须含有大小写字母 
  'number' => 2, // 必须含有数字 
  'special' => 2 // 必须含有特殊字符 
); 
 
$special = '!@#$%_-'; 
 
$obj = new GeneratePassword(8, 10, $rule, $special); 
$passwords = $obj->batchGenerate(); 
 
echo implode('<br>', $passwords); 
&#63;> 

本文完整源码可点击此处本站下载

相信本文所述对大家的C#程序设计有一定的借鉴价值。

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
What data can be stored in a PHP session?What data can be stored in a PHP session?May 02, 2025 am 12:17 AM

PHPsessionscanstorestrings,numbers,arrays,andobjects.1.Strings:textdatalikeusernames.2.Numbers:integersorfloatsforcounters.3.Arrays:listslikeshoppingcarts.4.Objects:complexstructuresthatareserialized.

How do you start a PHP session?How do you start a PHP session?May 02, 2025 am 12:16 AM

TostartaPHPsession,usesession_start()atthescript'sbeginning.1)Placeitbeforeanyoutputtosetthesessioncookie.2)Usesessionsforuserdatalikeloginstatusorshoppingcarts.3)RegeneratesessionIDstopreventfixationattacks.4)Considerusingadatabaseforsessionstoragei

What is session regeneration, and how does it improve security?What is session regeneration, and how does it improve security?May 02, 2025 am 12:15 AM

Session regeneration refers to generating a new session ID and invalidating the old ID when the user performs sensitive operations in case of session fixed attacks. The implementation steps include: 1. Detect sensitive operations, 2. Generate new session ID, 3. Destroy old session ID, 4. Update user-side session information.

What are some performance considerations when using PHP sessions?What are some performance considerations when using PHP sessions?May 02, 2025 am 12:11 AM

PHP sessions have a significant impact on application performance. Optimization methods include: 1. Use a database to store session data to improve response speed; 2. Reduce the use of session data and only store necessary information; 3. Use a non-blocking session processor to improve concurrency capabilities; 4. Adjust the session expiration time to balance user experience and server burden; 5. Use persistent sessions to reduce the number of data read and write times.

How do PHP sessions differ from cookies?How do PHP sessions differ from cookies?May 02, 2025 am 12:03 AM

PHPsessionsareserver-side,whilecookiesareclient-side.1)Sessionsstoredataontheserver,aremoresecure,andhandlelargerdata.2)Cookiesstoredataontheclient,arelesssecure,andlimitedinsize.Usesessionsforsensitivedataandcookiesfornon-sensitive,client-sidedata.

How does PHP identify a user's session?How does PHP identify a user's session?May 01, 2025 am 12:23 AM

PHPidentifiesauser'ssessionusingsessioncookiesandsessionIDs.1)Whensession_start()iscalled,PHPgeneratesauniquesessionIDstoredinacookienamedPHPSESSIDontheuser'sbrowser.2)ThisIDallowsPHPtoretrievesessiondatafromtheserver.

What are some best practices for securing PHP sessions?What are some best practices for securing PHP sessions?May 01, 2025 am 12:22 AM

The security of PHP sessions can be achieved through the following measures: 1. Use session_regenerate_id() to regenerate the session ID when the user logs in or is an important operation. 2. Encrypt the transmission session ID through the HTTPS protocol. 3. Use session_save_path() to specify the secure directory to store session data and set permissions correctly.

Where are PHP session files stored by default?Where are PHP session files stored by default?May 01, 2025 am 12:15 AM

PHPsessionfilesarestoredinthedirectoryspecifiedbysession.save_path,typically/tmponUnix-likesystemsorC:\Windows\TemponWindows.Tocustomizethis:1)Usesession_save_path()tosetacustomdirectory,ensuringit'swritable;2)Verifythecustomdirectoryexistsandiswrita

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools