PHP生成随机密码类分享_php实例

类代码:

<?php
/**
 * PHP - Password Generator Class
 * Version 1.0.0
 *
 */

if (@!is_object($passGen) || !isset($passGen)) {
  $passGen = new Password;
}

class Password
{

  /**
   * 大写字母 A-Z
   *
   * @var array
   */
  protected $uppercase_chars;

  /**
   * 小写字母 a-z
   *
   * @var array
   */
  protected $lowercase_chars;

  /**
   * 阿拉伯数字 0-9
   *
   * @var array
   */
  protected $number_chars;

  /**
   * 特殊字符
   *
   * @var array
   */
  protected $special_chars;

  /**
   * 其他特殊字符
   *
   * @var array
   */
  protected $extra_chars;

  /**
   * 最终用来生成密码的所有字符
   *
   * @var array
   */
  protected $chars = array();

  /**
   * 密码长度
   *
   * @var array
   */
  public $length;

  /**
   * 是否使用大写字母
   *
   * @var boolean
   */
  public $uppercase;

  /**
   * 是否使用小写字母
   *
   * @var boolean
   */
  public $lowercase;

  /**
   * 是否使用阿拉伯数字
   *
   * @var boolean
   */
  public $number;

  /**
   * 是否使用特殊字符
   *
   * @var boolean
   */
  public $special;

  /**
   * 是否使用额外的特殊字符
   *
   * @var boolean
   */
  public $extra;

  /**
   * 初始化密码设置
   *
   * @param int $length
   */
  function Password($length = 12)
  {
    $this->length = $length;

    $this->configure(true, true, true, false, false);
  }

  /**
   * 配置
   */
  function configure($uppercase = false, $lowercase = false, $number = false,
            $special = false, $extra = false
  ) {
    $this->chars = array();

    $this->upper_chars  = array(
                 "A", "B", "C", "D", "E", "F", "G", "H", "I",
                 "J", "K", "L", "M", "N", "O", "P", "Q", "R",
                 "S", "T", "U", "V", "W", "X", "Y", "Z"
                );
    $this->lower_chars  = array(
                 "a", "b", "c", "d", "e", "f", "g", "h", "i",
                 "j", "k", "l", "m", "n", "o", "p", "q", "r",
                 "s", "t", "u", "v", "w", "x", "y", "z"
                );
    $this->number_chars = array(
                 "1", "2", "3", "4", "5", "6", "7", "8", "9", "0"
                );
    $this->special_chars = array(
                 "!", "@", "#", "$", "%", "^", "&", "*", "(", ")"
                );
    $this->extra_chars  = array(
                 "[", "]", "{", "}", "-", "_", "+", "=", "<",
                 ">", "?", "/", "`", "~", "|", ",", ".", ";", ":"
                );

    if (($this->uppercase = $uppercase) === true) {
      $this->chars = array_merge($this->chars, $this->upper_chars);
    }
    if (($this->lowercase = $lowercase) === true) {
      $this->chars = array_merge($this->chars, $this->lower_chars);
    }
    if (($this->number = $number) === true) {
      $this->chars = array_merge($this->chars, $this->number_chars);
    }
    if (($this->special = $special) === true) {
      $this->chars = array_merge($this->chars, $this->special_chars);
    }
    if (($this->extra = $extra) === true) {
      $this->chars = array_merge($this->chars, $this->extra_chars);
    }

    $this->chars = array_unique($this->chars);
  }

  /**
   * 从字符列中生成随机密码
   *
   * @return string
   **/
  function generate()
  {
    if (empty($this->chars)) {
      return false;
    }

    $hash    = '';
    $totalChars = count($this->chars) - 1;

    for ($i = 0; $i < $this->length; $i++) {
      $hash .= $this->chars[$this->random(0, $totalChars)];
    }

    return $hash;
  }

  /**
   * 生成随机数字
   *
   * @return int
   */
  function random($min = 0, $max = 0)
  {
    $max_random = 4294967295;

    $random = uniqid(microtime() . mt_rand(), true);
    $random = sha1(md5($random));

    $value = substr($random, 0, 8);
    $value = abs(hexdec($value));

    if ($max != 0) {
      $value = $min + ($max - $min + 1) * $value / ($max_random + 1);
    }

    return abs(intval($value));
  }
}

调用:

<?php

include_once 'password.class.php';

echo $passGen->generate();

//FS4yq74e2LeE

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