php密码生成类实例

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：

 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 
 
   
  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; 
      } 
    } 
  } 
 
   
  public function batchGenerate(){ 
    $passwords = array(); 
    for($i=0; $i<$this->_num; $i++){ 
      array_push($passwords, $this->generate()); 
    } 
    return $passwords; 
  } 
 
   
  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; 
  } 
 
   
  private function getLetter(){ 
    $letter = 'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz'; 
    return $letter; 
  } 
 
   
  private function getNumber(){ 
    $number = '1234567890'; 
    return $number; 
  } 
 
   
  private function getSpecial(){ 
    $special = $this->_special; 
    return $special; 
  } 
} // class end 
 
?> 

demo示例程序如下：

 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('
', $passwords); 
?> 

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相信本文所述对大家的C#程序设计有一定的借鉴价值。