PHP random函数代码示例

function user_register($user)
{
    if (empty($user) || !is_array($user)) {
        return 0;
    }
    if (isset($user['uid'])) {
        unset($user['uid']);
    }
    $user['salt'] = random(8);
    $user['password'] = user_hash($user['password'], $user['salt']);
    $user['joinip'] = CLIENT_IP;
    $user['joindate'] = TIMESTAMP;
    $user['lastip'] = CLIENT_IP;
    $user['lastvisit'] = TIMESTAMP;
    if (empty($user['status'])) {
        $user['status'] = 2;
    }
    $now = time();
    if (empty($user['endtime'])) {
        $user['endtime'] = $now + 7 * 24 * 3600;
    }
    $result = pdo_insert('users', $user);
    if (!empty($result)) {
        $user['uid'] = pdo_insertid();
    }
    return intval($user['uid']);
}

 public function encryptMsg($text)
 {
     $token = $this->account['token'];
     $encodingaeskey = $this->account['encodingaeskey'];
     $appid = $this->account['key'];
     $key = base64_decode($encodingaeskey . '=');
     $text = random(16) . pack("N", strlen($text)) . $text . $appid;
     $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
     $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
     $iv = substr($key, 0, 16);
     $block_size = 32;
     $text_length = strlen($text);
     $amount_to_pad = $block_size - $text_length % $block_size;
     if ($amount_to_pad == 0) {
         $amount_to_pad = $block_size;
     }
     $pad_chr = chr($amount_to_pad);
     $tmp = '';
     for ($index = 0; $index < $amount_to_pad; $index++) {
         $tmp .= $pad_chr;
     }
     $text = $text . $tmp;
     mcrypt_generic_init($module, $key, $iv);
     $encrypted = mcrypt_generic($module, $text);
     mcrypt_generic_deinit($module);
     mcrypt_module_close($module);
     $encrypt_msg = base64_encode($encrypted);
     $signature = $this->buildSignature($encrypt_msg);
     return array($signature, $encrypt_msg);
 }

 public function doMobileShowlove()
 {
     global $_W, $_GPC;
     $res_path = $this->res_path;
     $shareimg = $_W['siteroot'] . substr($res_path, 3) . "/images/icon.jpg";
     $sharelink = $_W['siteurl'];
     $sharedesc = "帮TA传情，你有" . random(2, true) . "个好友也在玩这个哦";
     $sharetitle = "帮TA传情，你有" . random(2, true) . "个好友也在玩这个哦";
     $id = intval($_GPC['id']);
     $sql = 'SELECT * FROM ' . tablename($this->tb_lovehelper_msg) . ' WHERE id=:id AND uniacid=:uniacid LIMIT 1';
     $params = array(':id' => $id, ':uniacid' => $_W['uniacid']);
     $msg = pdo_fetch($sql, $params);
     $content = $msg["content"] . "<br>from:" . $msg["fromuser"];
     $bgimage = $msg["bgimage"];
     $viewcount = $this->number($msg["viewcount"]);
     $forward = $this->number($msg["forward"]);
     $praise = $this->number($msg["praise"]);
     $ip = array('clientip' => $_W['clientip'], 'id' => $id, 'uniacid' => $_W['uniacid'], 'createtime' => TIMESTAMP);
     $existIp = pdo_fetchcolumn('SELECT COUNT(*) FROM ' . tablename($this->tb_lovehelper_ip) . ' WHERE clientip=:clientip AND id=:id AND uniacid=:uniacid ', array(':clientip' => $_W['clientip'], ':id' => $id, ':uniacid' => $_W['uniacid']));
     if ($existIp == 0) {
         pdo_insert($this->tb_lovehelper_ip, $ip);
         pdo_query('update ' . tablename($this->tb_lovehelper_msg) . " set viewcount=viewcount+1 where id=:id and uniacid=:uniacid ", array(':id' => $id, ':uniacid' => $_W['uniacid']));
     }
     include $this->template('showlove');
 }

 function oncode()
 {
     ob_clean();
     $code = random(4);
     $_ENV['user']->save_code(strtolower($code));
     makecode($code);
 }

 public function doMobilePay()
 {
     global $_W, $_GPC;
     if (empty($_W['member']['uid'])) {
         checkauth();
     }
     $username = $_W['member']['email'] ? $_W['member']['email'] : $_W['member']['mobile'];
     if (empty($username)) {
         message('您的用户信息不完整,请完善用户信息后再充值', '', 'error');
     }
     if (checksubmit('submit', true) || !empty($_GPC['ajax'])) {
         $fee = floatval($_GPC['money']);
         if ($fee <= 0) {
             message('支付错误, 金额小于0');
         }
         $chargerecord = pdo_fetch("SELECT * FROM " . tablename('mc_credits_recharge') . " WHERE uniacid = :uniacid AND uid = :uid AND fee = :fee AND status = '0'", array(':uniacid' => $_W['uniacid'], ':uid' => $_W['member']['uid'], ':fee' => $fee));
         if (empty($chargerecord)) {
             $chargerecord = array('uid' => $_W['member']['uid'], 'uniacid' => $_W['uniacid'], 'tid' => date('YmdHi') . random(10, 1), 'fee' => $fee, 'status' => 0, 'createtime' => TIMESTAMP);
             if (!pdo_insert('mc_credits_recharge', $chargerecord)) {
                 message('创建充值订单失败，请重试！', url('entry', array('m' => 'recharge', 'do' => 'pay')), 'error');
             }
         }
         $params = array('tid' => $chargerecord['tid'], 'ordersn' => $chargerecord['tid'], 'title' => '系统充值余额', 'fee' => $chargerecord['fee'], 'user' => $_W['member']['uid']);
         $this->pay($params);
     } else {
         include $this->template('recharge');
     }
 }

 public function packAction()
 {
     $folder = $this->params('folder');
     $destination = $this->params('destination');
     $name = $this->params('name');
     if (empty($name)) {
         $text = file_get_contents($folder . '/deployment.json');
         $data = json_decode($text, true);
         $name = preg_replace('/^[^\\d\\w-\\.]$/', '', $data['name'] . '-' . $data['version']);
         if (empty($name)) {
             $name = random(1, 30) . '.zip';
         }
         $name .= '.zip';
     }
     $zipFileName = $destination . '/' . $name;
     ignore_user_abort(true);
     $root = realpath($folder);
     $zip = new \ZipArchive();
     if (!$zip->open($zipFileName, \ZipArchive::CREATE | \ZipArchive::OVERWRITE)) {
         throw new \Zend\Mvc\Exception\RuntimeException('Unable to zip folder.Check folder permissions.');
     }
     // Notice: Empty directories are omitted
     $files = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($root), \RecursiveIteratorIterator::LEAVES_ONLY);
     foreach ($files as $name => $entry) {
         if (!$entry->isDir()) {
             $filePath = $entry->getRealPath();
             $relativePath = substr($filePath, strlen($root) + 1);
             $zip->addFile($filePath, $relativePath);
         }
     }
     $zip->close();
     ignore_user_abort(false);
     $this->getResponse()->setContent($zipFileName . "\n");
     return $this->getResponse();
 }

 public static function make_secqaa()
 {
     global $_G;
     loadcache('secqaa');
     $secqaakey = max(1, random(1, 1));
     if ($_G['cache']['secqaa'][$secqaakey]['type']) {
         $etype = explode(':', $_G['cache']['secqaa'][$secqaakey]['question']);
         if (count($etype) > 1) {
             $qaafile = DISCUZ_ROOT . './source/plugin/' . $etype[0] . '/secqaa/secqaa_' . $etype[1] . '.php';
             $class = $etype[1];
         } else {
             $qaafile = libfile('secqaa/' . $_G['cache']['secqaa'][$secqaakey]['question'], 'class');
             $class = $_G['cache']['secqaa'][$secqaakey]['question'];
         }
         if (file_exists($qaafile)) {
             @(include_once $qaafile);
             $class = 'secqaa_' . $class;
             if (class_exists($class)) {
                 $qaa = new $class();
                 if (method_exists($qaa, 'make')) {
                     $_G['cache']['secqaa'][$secqaakey]['answer'] = md5($qaa->make($_G['cache']['secqaa'][$secqaakey]['question']));
                 }
             }
         }
     }
     self::_create('qaa', substr($_G['cache']['secqaa'][$secqaakey]['answer'], 0, 6));
     return $_G['cache']['secqaa'][$secqaakey]['question'];
 }

 public function output($length = 4)
 {
     $rand = random((int) $length);
     $data = array('captcha' => md5(strtolower($rand)));
     $this->session->set_userdata($data);
     return build_verify($rand);
 }

 /**
  * Send packet
  * @param string see format()
  * @return void
  */
 public function send($format)
 {
     ++$this->send_seq;
     $payload = call_user_func_array('ssh\\format', func_get_args());
     $block_length = max($this->send_block_length, 8);
     if ($this->send_compress) {
         $payload = $this->compress($payload);
     }
     $length = 1 + strlen($payload);
     $padlen = $block_length - ($length + 4) % $block_length;
     if ($padlen < 4) {
         $padlen += $block_length;
     }
     $length += $padlen;
     $padding = random($padlen);
     $packet = pack('NCa*a*', $length, $padlen, $payload, $padding);
     $mac = '';
     if ($this->send_mac_length > 0) {
         $mac = substr(hash_hmac($this->send_mac_algo, pack('Na*', $this->send_seq, $packet), $this->send_mac_key, TRUE), 0, $this->send_mac_length);
     }
     if ($this->send_encryption) {
         $packet = mcrypt_generic($this->send_encryption, $packet);
     }
     $data = $packet . $mac;
     for (; strlen($data) > 0 && ($written = fwrite($this->output, $data)) !== FALSE; $data = substr($data, $written)) {
     }
     if ($written === FALSE) {
         throw new WriteError();
     }
 }

function build_cache_styles()
{
    global $_G;
    $stylevars = $styledata = array();
    $defaultstyleid = $_G['setting']['styleid'];
    foreach (C::t('common_stylevar')->range() as $var) {
        $stylevars[$var['styleid']][$var['variable']] = $var['substitute'];
    }
    foreach (C::t('common_style')->fetch_all_data(true) as $data) {
        $data['tpldir'] = $data['directory'];
        $data = array_merge($data, (array) $stylevars[$data['styleid']]);
        $datanew = array();
        $data['imgdir'] = $data['imgdir'] ? $data['imgdir'] : STATICURL . 'image/common';
        $data['styleimgdir'] = $data['styleimgdir'] ? $data['styleimgdir'] : $data['imgdir'];
        foreach ($data as $k => $v) {
            if (substr($k, -7, 7) == 'bgcolor') {
                $newkey = substr($k, 0, -7) . 'bgcode';
                $datanew[$newkey] = setcssbackground($data, $k);
            }
        }
        $data = array_merge($data, $datanew);
        if (strstr($data['boardimg'], ',')) {
            $flash = explode(",", $data['boardimg']);
            $flash[0] = trim($flash[0]);
            $flash[0] = preg_match('/^http:\\/\\//i', $flash[0]) ? $flash[0] : $data['styleimgdir'] . '/' . $flash[0];
            $data['boardlogo'] = "<embed src=\"" . $flash[0] . "\" width=\"" . trim($flash[1]) . "\" height=\"" . trim($flash[2]) . "\" type=\"application/x-shockwave-flash\" wmode=\"transparent\"></embed>";
        } else {
            $data['boardimg'] = preg_match('/^http:\\/\\//i', $data['boardimg']) ? $data['boardimg'] : $data['styleimgdir'] . '/' . $data['boardimg'];
            $data['boardlogo'] = "<img src=\"{$data['boardimg']}\" alt=\"" . $_G['setting']['bbname'] . "\" border=\"0\" />";
        }
        $data['bold'] = $data['nobold'] ? 'normal' : 'bold';
        $contentwidthint = intval($data['contentwidth']);
        $contentwidthint = $contentwidthint ? $contentwidthint : 600;
        if ($data['extstyle']) {
            list($data['extstyle'], $data['defaultextstyle']) = explode('|', $data['extstyle']);
            $extstyle = explode("\t", $data['extstyle']);
            $data['extstyle'] = array();
            foreach ($extstyle as $dir) {
                if (file_exists($extstylefile = DISCUZ_ROOT . $data['tpldir'] . '/style/' . $dir . '/style.css')) {
                    if ($data['defaultextstyle'] == $dir) {
                        $data['defaultextstyle'] = $data['tpldir'] . '/style/' . $dir;
                    }
                    $content = file_get_contents($extstylefile);
                    if (preg_match('/\\[name\\](.+?)\\[\\/name\\]/i', $content, $r1) && preg_match('/\\[iconbgcolor](.+?)\\[\\/iconbgcolor]/i', $content, $r2)) {
                        $data['extstyle'][] = array($data['tpldir'] . '/style/' . $dir, $r1[1], $r2[1]);
                    }
                }
            }
        }
        $data['verhash'] = random(3);
        $styledata[] = $data;
    }
    foreach ($styledata as $data) {
        savecache('style_' . $data['styleid'], $data);
        if ($defaultstyleid == $data['styleid']) {
            savecache('style_default', $data);
        }
        writetocsscache($data);
    }
}

function make_secqaa($idhash)
{
    global $_G;
    loadcache('secqaa');
    $secqaakey = max(1, random(1, 1));
    if ($_G['cache']['secqaa'][$secqaakey]['type']) {
        $etype = explode(':', $_G['cache']['secqaa'][$secqaakey]['question']);
        if (count($etype) > 1 && preg_match('/^[\\w\\_]+$/', $etype[0]) && preg_match('/^[\\w\\_]+$/', $etype[1])) {
            $qaafile = DISCUZ_ROOT . './source/plugin/' . $etype[0] . '/secqaa/secqaa_' . $etype[1] . '.php';
            $class = $etype[1];
        } else {
            $qaafile = libfile('secqaa/' . $_G['cache']['secqaa'][$secqaakey]['question'], 'class');
            $class = $_G['cache']['secqaa'][$secqaakey]['question'];
        }
        if (file_exists($qaafile)) {
            @(include_once $qaafile);
            $class = 'secqaa_' . $class;
            if (class_exists($class)) {
                $qaa = new $class();
                if (method_exists($qaa, 'make')) {
                    $_G['cache']['secqaa'][$secqaakey]['answer'] = md5($qaa->make($_G['cache']['secqaa'][$secqaakey]['question']));
                }
            }
        }
    }
    dsetcookie('secqaa' . $idhash, authcode($_G['cache']['secqaa'][$secqaakey]['answer'] . "\t" . (TIMESTAMP - 180) . "\t" . $idhash . "\t" . FORMHASH, 'ENCODE', $_G['config']['security']['authkey']), 0, 1, true);
    return $_G['cache']['secqaa'][$secqaakey]['question'];
}

 function upload($file)
 {
     global $_G;
     $url = 'http://taobaoshangcheng.uz.taobao.com/upload.php?new=1';
     $_G[upload_index] = intval($_G[upload_index]) + 1;
     $file_path = '@' . realpath($file) . '';
     $data = array('token' => random(10), 'file' => $file_path);
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $url);
     curl_setopt($ch, CURLOPT_POST, true);
     curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
     curl_setopt($ch, CURLOPT_HEADER, false);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($ch, CURLOPT_REFERER, $_G[siteurl]);
     curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
     curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:110.75.74.69', 'CLIENT-IP:110.75.74.69'));
     //IP
     $rs = curl_exec($ch);
     curl_close($ch);
     if (strpos($rs, 'img_url') !== false) {
         $rs = json_decode($rs, 1);
         return $this->check($rs);
     } else {
         if (strpos($rs, "淘宝系统缓冲") !== false && $_G[upload_index] < 5) {
             return $this->upload($file);
         } else {
             $rs = trim_html($rs, 1);
             L('上传图片到淘宝服务器失败' . $rs);
             return false;
         }
     }
     return $file;
 }

 public function save($url, $config)
 {
     set_time_limit(0);
     if (empty($url)) {
         return '';
     }
     $ext = strrchr($url, ".");
     if ($ext != ".jpeg" && $ext != ".gif" && $ext != ".jpg" && $ext != ".png") {
         return "";
     }
     $filename = random(30) . $ext;
     if (!$this->check_remote_file_exists($url)) {
         return "";
     }
     $contents = @file_get_contents($url);
     $storename = $filename;
     $bu = $config['bucket'] . ":" . $storename;
     $accessKey = $config['access_key'];
     $secretKey = $config['secret_key'];
     Qiniu_SetKeys($accessKey, $secretKey);
     $putPolicy = new Qiniu_RS_PutPolicy($bu);
     $upToken = $putPolicy->Token(null);
     $putExtra = new Qiniu_PutExtra();
     $putExtra->Crc32 = 1;
     list($ret, $err) = Qiniu_Put($upToken, $storename, $contents, $putExtra);
     if (!empty($err)) {
         return "";
     }
     return 'http://' . trim($config['url']) . "/" . $ret['key'];
 }

 public function doMobilecoupon()
 {
     global $_GPC, $_W;
     $op = !empty($_GPC['op']) ? $_GPC['op'] : 'display';
     if ($op == 'display') {
         $id = $_GPC['id'];
         if (empty($id)) {
             message('参数错误');
         }
         $code = pdo_fetch("SELECT * FROM " . tablename('choose_order') . " WHERE uniacid = '{$_W['uniacid']}' AND openid = '{$_W['openid']}' ");
         $codemess = pdo_fetch("SELECT * FROM " . tablename('choose_pro') . " WHERE uniacid = '{$_W['uniacid']}' AND id = '{$id}' ");
         include $this->template('code');
     }
     if ($op == 'post') {
         $id = $_GPC['id'];
         $code = pdo_fetch("SELECT * FROM " . tablename('choose_order') . " WHERE uniacid = '{$_W['uniacid']}' AND openid = '{$_W['openid']}' AND mobile = '{$_GPC['mobile']}' ");
         if (!empty($code['code'])) {
             $status = false;
             $msg = '您已经领取过优惠券，请勿重复领取!';
         } elseif (!empty($code)) {
             $carttotal = random(4, 1) . random(4, 1) . random(4, 1);
             $data = array('uniacid' => $_W['uniacid'], 'ordersn' => date('md') . random(4, 1), 'openid' => $_W['openid'], 'mobile' => $_GPC['mobile'], 'code' => $carttotal, 'pro_id' => $id, 'createtime' => TIMESTAMP);
             pdo_update('choose_order', $data, array('id' => $code['id']));
             pdo_query("update " . tablename('choose_pro') . " set youhui_num=youhui_num+1 where id = '{$_GPC['huodong_id']}' ");
         } else {
             $carttotal = random(4, 1) . random(4, 1) . random(4, 1);
             $data = array('uniacid' => $_W['uniacid'], 'ordersn' => date('md') . random(4, 1), 'openid' => $_W['openid'], 'mobile' => $_GPC['mobile'], 'code' => $carttotal, 'pro_id' => $id, 'createtime' => TIMESTAMP);
             pdo_insert('choose_order', $data);
             pdo_query("update " . tablename('choose_pro') . " set youhui_num=youhui_num+1 where id = '{$_GPC['huodong_id']}' ");
         }
         $result = array('status' => $status, 'msg' => $msg, 'coupon_bn' => $carttotal);
         die(json_encode($result));
     }
 }

function curr_file($file_id)
{
    global $db, $tpf, $settings, $code;
    $file = $db->fetch_one_array("select * from {$tpf}files where file_id='{$file_id}'");
    if (!$file) {
        $file['is_del'] = 1;
    } else {
        $file['dl'] = create_down_url($file);
        $in_extract = $code == md5($file['file_key']) ? 1 : 0;
        $file['username'] = $file['p_name'] = @$db->result_first("select username from {$tpf}users where userid='{$file['userid']}' limit 1");
        $rs = $db->fetch_one_array("select folder_id,folder_name from {$tpf}folders where userid='{$file['userid']}' and folder_id='{$file['folder_id']}'");
        $file['file_category'] = $rs['folder_name'] ? '<a href="' . urr("space", "username=" . rawurlencode($file['username']) . "&folder_id=" . $rs['folder_id']) . '" target="_blank">' . $rs['folder_name'] . '</a>' : '- ' . __('uncategory') . ' -';
        $file_key = trim($file['file_key']);
        $tmp_ext = $file['file_extension'] ? '.' . $file['file_extension'] : "";
        $file_extension = $file['file_extension'];
        $file_ext = get_real_ext($file_extension);
        $file['file_description'] = str_replace('<br>', LF, $file[file_description]);
        $file['a_space'] = urr("space", "username=" . rawurlencode($file['username']));
        $file['file_name_min'] = filter_word($file['file_name'] . $tmp_ext);
        $file['file_name'] = filter_word($file['file_name'] . $tmp_ext);
        $file['file_size'] = get_size($file['file_size']);
        $file['p_time'] = $file['file_time'];
        $file['file_time'] = $file['time_hidden'] ? __('hidden') : date("Y-m-d", $file['file_time']);
        $file['credit_down'] = $file['file_credit'] ? (int) $file['file_credit'] : (int) $settings['credit_down'];
        $file['username'] = $file[user_hidden] ? __('hidden') : ($file['username'] ? '<a href="' . $file['a_space'] . '">' . $file['username'] . '</a>' : __('hidden'));
        $file['file_downs'] = $file['stat_hidden'] ? __('hidden') : get_discount($file[userid], $file['file_downs']);
        $file['file_views'] = $file['stat_hidden'] ? __('hidden') : get_discount($file[userid], $file['file_views']);
        $file['file_url'] = $settings['phpdisk_url'] . urr("viewfile", "file_id={$file['file_id']}");
        if (get_plans(get_profile($file[userid], 'plan_id'), 'open_second_page') == 3) {
            $file['a_downfile'] = urr("download", "file_id={$file_id}&key=" . random(32));
            $file['a_downfile2'] = urr("download", "file_id={$file_id}&key=" . random(32));
        }
    }
    return $file;
}