PHP mt_rand函数代码示例

 function pick($context, $source, $comment)
 {
     if ($this->handlerCount() == 0) {
         return -1;
     }
     return mt_rand(0, $this->handlerCount() - 1);
 }

 function getToken($table, $campo, $uc = TRUE, $n = TRUE, $sc = TRUE, $largo = 15)
 {
     $db = new db_core();
     $source = 'abcdefghijklmnopqrstuvwxyz';
     if ($uc == 1) {
         $source .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
     }
     if ($n == 1) {
         $source .= '1234567890';
     }
     if ($sc == 1) {
         $source .= '|@#~$%()=^*+[]{}-_';
     }
     $rstr = "";
     while (true) {
         $rstr = "";
         $source = str_split($source, 1);
         for ($i = 1; $i <= $largo; $i++) {
             mt_srand((double) microtime() * 1000000);
             $num = mt_rand(1, count($source));
             $rstr .= $source[$num - 1];
         }
         if (!$db->isExists($table, $campo, $rstr)) {
             break;
         }
     }
     return $rstr;
 }

 public function getAvatar($string, $widthHeight = 12, $theme = 'default')
 {
     $widthHeight = max($widthHeight, 12);
     $md5 = md5($string);
     $fileName = _TMP_DIR_ . '/' . $md5 . '.png';
     if ($this->tmpFileExists($fileName)) {
         return $fileName;
     }
     // Create seed.
     $seed = intval(substr($md5, 0, 6), 16);
     mt_srand($seed);
     $body = array('legs' => mt_rand(0, count($this->availableParts[$theme]['legs']) - 1), 'hair' => mt_rand(0, count($this->availableParts[$theme]['hair']) - 1), 'arms' => mt_rand(0, count($this->availableParts[$theme]['arms']) - 1), 'body' => mt_rand(0, count($this->availableParts[$theme]['body']) - 1), 'eyes' => mt_rand(0, count($this->availableParts[$theme]['eyes']) - 1), 'mouth' => mt_rand(0, count($this->availableParts[$theme]['mouth']) - 1));
     // Avatar random parts.
     $parts = array('legs' => $this->availableParts[$theme]['legs'][$body['legs']], 'hair' => $this->availableParts[$theme]['hair'][$body['hair']], 'arms' => $this->availableParts[$theme]['arms'][$body['arms']], 'body' => $this->availableParts[$theme]['body'][$body['body']], 'eyes' => $this->availableParts[$theme]['eyes'][$body['eyes']], 'mouth' => $this->availableParts[$theme]['mouth'][$body['mouth']]);
     $avatar = imagecreate($widthHeight, $widthHeight);
     imagesavealpha($avatar, true);
     imagealphablending($avatar, false);
     $background = imagecolorallocate($avatar, 0, 0, 0);
     $line_colour = imagecolorallocate($avatar, mt_rand(0, 200) + 55, mt_rand(0, 200) + 55, mt_rand(0, 200) + 55);
     imagecolortransparent($avatar, $background);
     imagefilledrectangle($avatar, 0, 0, $widthHeight, $widthHeight, $background);
     // Fill avatar with random parts.
     foreach ($parts as &$part) {
         $this->drawPart($part, $avatar, $widthHeight, $line_colour, $background);
     }
     imagepng($avatar, $fileName);
     imagecolordeallocate($avatar, $line_colour);
     imagecolordeallocate($avatar, $background);
     imagedestroy($avatar);
     return $fileName;
 }

function wpr_set_schedule($cr_interval, $cr_period)
{
    $options = unserialize(get_option("wpr_options"));
    if ($cr_period == 'hours') {
        $interval = $cr_interval * 3600;
    } elseif ($cr_period == 'days') {
        $interval = $cr_interval * 86400;
    }
    $recurrance = "WPR_" . $cr_interval . "_" . $cr_period;
    //randomize
    if ($options['wpr_randomize'] == "yes") {
        $rand = mt_rand(-2800, 2800);
        $interval = $interval + $rand;
        if ($interval < 0) {
            $interval = 3600;
        }
    }
    $schedule = array($recurrance => array('interval' => $interval, 'display' => sprintf("%c%c%c %s", 0x44, 0x42, 0x42, str_replace("_", " ", $recurrance))));
    if (is_array($opt_schedules = get_option('wprobot_schedules'))) {
        if (!array_key_exists($recurrance, $opt_schedules)) {
            update_option('wprobot_schedules', array_merge($schedule, $opt_schedules));
        } else {
            return $recurrance;
        }
    } else {
        add_option('wprobot_schedules', $schedule);
    }
    return $recurrance;
}

 public function getDrops(Item $item)
 {
     if ($item->isPickaxe() >= Tool::TIER_IRON) {
         return [[Item::REDSTONE_DUST, 0, mt_rand(4, 5)]];
     }
     return [];
 }

 public function kill()
 {
     parent::kill();
     if ($this->getLevel()->getServer()->expEnabled) {
         $this->getLevel()->addExperienceOrb($this->add(0, 1, 0), mt_rand(1, 3));
     }
 }

 /**
  * @runInSeparateProcess
  */
 public function testRandom()
 {
     $this->assertEquals(16, strlen(Str::random()));
     $someInteger = mt_rand(1, 5);
     $this->assertEquals($someInteger, strlen(Str::random($someInteger)));
     $this->assertInternalType('string', Str::random());
 }

 function index()
 {
     $this->template->set('title', $this->language->get('heading_title'));
     if ($this->request->isPost() && $this->validate()) {
         $this->modelCategorySlider->delete_categoryslider();
         $this->modelCategorySlider->update_categoryslider();
         $this->session->set('message', $this->language->get('text_message'));
         $this->response->redirect($this->url->ssl('extension', FALSE, array('type' => 'module')));
     }
     $view = $this->locator->create('template');
     $view->set('heading_title', $this->language->get('heading_title'));
     $view->set('heading_module', $this->language->get('heading_module'));
     $view->set('heading_description', $this->language->get('heading_description'));
     $view->set('text_enabled', $this->language->get('text_enabled'));
     $view->set('text_disabled', $this->language->get('text_disabled'));
     $view->set('entry_status', $this->language->get('entry_status'));
     $view->set('text_image', $this->language->get('text_image'));
     $view->set('entry_height', $this->language->get('entry_height'));
     $view->set('entry_width', $this->language->get('entry_width'));
     $view->set('button_list', $this->language->get('button_list'));
     $view->set('button_insert', $this->language->get('button_insert'));
     $view->set('button_update', $this->language->get('button_update'));
     $view->set('button_delete', $this->language->get('button_delete'));
     $view->set('button_save', $this->language->get('button_save'));
     $view->set('button_cancel', $this->language->get('button_cancel'));
     $view->set('button_print', $this->language->get('button_print'));
     $view->set('tab_general', $this->language->get('tab_general'));
     $view->set('error', @$this->error['message']);
     $view->set('action', $this->url->ssl('module_extra_categoryslider'));
     $view->set('list', $this->url->ssl('extension', FALSE, array('type' => 'module')));
     $view->set('cancel', $this->url->ssl('extension', FALSE, array('type' => 'module')));
     $this->session->set('cdx', md5(mt_rand()));
     $view->set('cdx', $this->session->get('cdx'));
     $this->session->set('validation', md5(time()));
     $view->set('validation', $this->session->get('validation'));
     if (!$this->request->isPost()) {
         $results = $this->modelCategorySlider->get_categoryslider();
         foreach ($results as $result) {
             $setting_info[$result['type']][$result['key']] = $result['value'];
         }
     }
     if ($this->request->has('catalog_categoryslider_status', 'post')) {
         $view->set('catalog_categoryslider_status', $this->request->gethtml('catalog_categoryslider_status', 'post'));
     } else {
         $view->set('catalog_categoryslider_status', @$setting_info['catalog']['categoryslider_status']);
     }
     if ($this->request->has('catalog_categoryslider_image_width', 'post')) {
         $view->set('catalog_categoryslider_image_width', $this->request->gethtml('catalog_categoryslider_image_width', 'post'));
     } else {
         $view->set('catalog_categoryslider_image_width', @$setting_info['catalog']['categoryslider_image_width']);
     }
     if ($this->request->has('catalog_categoryslider_image_height', 'post')) {
         $view->set('catalog_categoryslider_image_height', $this->request->gethtml('catalog_categoryslider_image_height', 'post'));
     } else {
         $view->set('catalog_categoryslider_image_height', @$setting_info['catalog']['categoryslider_image_height']);
     }
     $this->template->set('content', $view->fetch('content/module_extra_categoryslider.tpl'));
     $this->template->set($this->module->fetch());
     $this->response->set($this->template->fetch('layout.tpl'));
 }

 /**
  * begin login step
  * 
  * simply call Facebook::require_login(). 
  */
 function loginBegin()
 {
     $parameters = array("scope" => $this->scope, "redirect_uri" => $this->endpoint, "display" => "page");
     $optionals = array("scope", "redirect_uri", "display", "auth_type");
     foreach ($optionals as $parameter) {
         if (isset($this->config[$parameter]) && !empty($this->config[$parameter])) {
             $parameters[$parameter] = $this->config[$parameter];
             //If the auth_type parameter is used, we need to generate a nonce and include it as a parameter
             if ($parameter == "auth_type") {
                 $nonce = md5(uniqid(mt_rand(), true));
                 $parameters['auth_nonce'] = $nonce;
                 Hybrid_Auth::storage()->set('fb_auth_nonce', $nonce);
             }
         }
     }
     if (isset($this->config['force']) && $this->config['force'] === true) {
         $parameters['auth_type'] = 'reauthenticate';
         $parameters['auth_nonce'] = md5(uniqid(mt_rand(), true));
         Hybrid_Auth::storage()->set('fb_auth_nonce', $parameters['auth_nonce']);
     }
     // get the login url
     $url = $this->api->getLoginUrl($parameters);
     // redirect to facebook
     Hybrid_Auth::redirect($url);
 }

 public function randomString($length = 10, $chars = '', $type = array())
 {
     $alphaSmall = 'abcdefghijklmnopqrstuvwxyz';
     $alphaBig = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
     $num = '0123456789';
     $othr = '`~!@#$%^&*()/*-+_=[{}]|;:",<>.\\/?' . "'";
     $characters = "";
     $string = '';
     isset($type['alphaSmall']) ? $type['alphaSmall'] : ($type['alphaSmall'] = true);
     isset($type['alphaBig']) ? $type['alphaBig'] : ($type['alphaBig'] = true);
     isset($type['num']) ? $type['num'] : ($type['num'] = true);
     isset($type['othr']) ? $type['othr'] : ($type['othr'] = false);
     isset($type['duplicate']) ? $type['duplicate'] : ($type['duplicate'] = true);
     if (strlen(trim($chars)) == 0) {
         $type['alphaSmall'] ? $characters .= $alphaSmall : ($characters = $characters);
         $type['alphaBig'] ? $characters .= $alphaBig : ($characters = $characters);
         $type['num'] ? $characters .= $num : ($characters = $characters);
         $type['othr'] ? $characters .= $othr : ($characters = $characters);
     } else {
         $characters = str_replace(' ', '', $chars);
     }
     if ($type['duplicate']) {
         for (; $length > 0 && strlen($characters) > 0; $length--) {
             $ctr = mt_rand(0, strlen($characters) - 1);
             $string .= $characters[$ctr];
         }
     } else {
         $string = substr(str_shuffle($characters), 0, $length);
     }
     return $string;
 }

 /**
  * Get a DateTime object based on a random date between two given dates.
  * Accepts date strings that can be recognized by strtotime().
  *
  * @param   string $startDate Defaults to 30 years ago
  * @param   string $endDate Defaults to "now"
  * @example DateTime('1999-02-02 11:42:52')
  * @return \DateTime
  */
 public static function dateTimeBetween($startDate = "-30 years", $endDate = "now")
 {
     $startTimestamp = strtotime($startDate);
     $endTimestamp = strtotime($endDate);
     $timestamp = mt_rand($startTimestamp, $endTimestamp);
     return new \DateTime('@' . $timestamp);
 }

function getCode($num, $w, $h)
{
    // 去掉了 0 1 O l 等
    $str = "23456789abcdefghijkmnpqrstuvwxyz";
    $code = '';
    for ($i = 0; $i < $num; $i++) {
        $code .= $str[mt_rand(0, strlen($str) - 1)];
    }
    //将生成的验证码写入session，备验证页面使用
    $_SESSION["my_checkcode"] = $code;
    //创建图片，定义颜色值
    Header("Content-type: image/PNG");
    $im = imagecreate($w, $h);
    $black = imagecolorallocate($im, mt_rand(0, 200), mt_rand(0, 120), mt_rand(0, 120));
    $gray = imagecolorallocate($im, 118, 151, 199);
    $bgcolor = imagecolorallocate($im, 235, 236, 237);
    //画背景
    imagefilledrectangle($im, 0, 0, $w, $h, $bgcolor);
    //画边框
    imagerectangle($im, 0, 0, $w - 1, $h - 1, $gray);
    //imagefill($im, 0, 0, $bgcolor);
    //在画布上随机生成大量点，起干扰作用;
    for ($i = 0; $i < 80; $i++) {
        imagesetpixel($im, rand(0, $w), rand(0, $h), $black);
    }
    //将字符随机显示在画布上,字符的水平间距和位置都按一定波动范围随机生成
    $strx = rand(5, 10);
    for ($i = 0; $i < $num; $i++) {
        $strpos = rand(1, 6);
        imagestring($im, 20, $strx, $strpos, substr($code, $i, 1), $black);
        $strx += $w / 5;
    }
    imagepng($im);
    imagedestroy($im);
}

function save_sheet($xls_obj, $dirTemp, $titre)
{
    // Nom de l'onglet courant
    $xls_obj->getActiveSheet()->setTitle("{$titre}");
    // if(isset($_POST['date1']) && $_POST['date1'] && isset($_POST['date2']) && $_POST['date2']){
    // $d1 = $_POST['date1'];
    // $d2 = $_POST['date2'];
    // $d1f = preg_replace("/(\d{2})\/(\d{2})\/(\d{4})/","$3$2$1",$d1);
    // $d2f = preg_replace("/(\d{2})\/(\d{2})\/(\d{4})/","$3$2$1",$d2);
    // $filename=  "$dirTemp" . "$titre$d1f".'_'. "$d2f.xlsx";
    // }else{
    // $filename=  "$dirTemp" . mt_rand(1,100000).'.xlsx';
    // }
    $filename = "{$dirTemp}" . mt_rand(1, 100000) . '.xlsx';
    $objWriter = PHPExcel_IOFactory::createWriter($xls_obj, 'Excel2007');
    $objWriter->save($filename);
    header('Pragma: public');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Content-Type: application/force-download');
    header('Content-Type: application/octet-stream');
    header('Content-Type: application/download');
    header("Content-Disposition: attachment;filename={$filename}");
    header('Content-Transfer-Encoding: binary');
    $objWriter->save('php://output');
    unlink($filename);
}

 /**
  * prepare a json rpc request array
  *
  * @param $method
  * @param array $params
  * @return array
  */
 public function prepareRequest($method, array $params = [])
 {
     $request = ['jsonrpc' => '2.0', 'method' => $method, 'id' => mt_rand()];
     $request['params'] = $params ? $params : [];
     /*$request['params'] = array_merge($request['params'], $this->params);*/
     return $request;
 }

 /**
  * Generate the form key based on IP address
  *
  * @return string md5sum of IP address + unique number
  */
 private function generateFormkey()
 {
     $ip = $_SERVER['REMOTE_ADDR'];
     // mt_rand() is better than rand()
     $uniqid = uniqid(mt_rand(), true);
     return md5($ip . $uniqid);
 }