php密码生成类实例

// 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'],2))){ // 1:可选用 2:必须
  $t_rule['number'] = $rule['number'];
  }

  if(isset($rule['special']) && in_array($rule['special'],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,1)); 
    $letter = strtolower($letter); 
    break; 
  
  case 4: 
    $force_pool .= strtoupper(substr($letter,1)); 
    $letter = strtoupper($letter); 
    break; 
  
  case 5: 
    $force_pool .= strtolower(substr($letter,1)); 
    $force_pool .= strtoupper(substr($letter,1)); 
    break; 

  }

  $pool .= $letter;
  }
  if(isset($this->_rule['number'])){

  $number = $this->getNumber();

  switch($this->_rule['number']){
  case 2:
  $force_pool .= substr($number,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,strlen($special)-1),1);
  break;
  }
  $pool .= $special;
  }

  $pool = str_shuffle($pool); // 随机打乱

  $password = str_shuffle($force_pool. substr($pool,$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

?>

$special = '!@#$%_-';

$obj = new GeneratePassword(8,10,$rule,$special);
$passwords = $obj->batchGenerate();

echo implode('
',$passwords);
?>