摘要：加密解密類由于開(kāi)始廢棄傳統(tǒng)的加密函數(shù)而改用，因此該類支持的版本為簡(jiǎn)易加解密類通用秘鑰所有可用的加密類型可參考構(gòu)造函數(shù)加密類型。

由于 PHP7.1 開(kāi)始廢棄傳統(tǒng)的加密函數(shù) mcrypt_encrypt 而改用 openssl_encrypt，因此該類支持的 PHP 版本為： (PHP 5 >= 5.3.0, PHP 7)

METHOD = $method;
        }
    }

    /**
        * 加密字符串
        *
        * @param String 待加密數(shù)據(jù)
        * @param string 加密秘鑰，若為空，則使用通用秘鑰
        * @return void
        */
    public function encrypt($input, $key = "") {
        if (empty($key)) $key = $this->KEY;
        $data = openssl_encrypt($input, $this->METHOD, $key, OPENSSL_RAW_DATA);
        $data = base64_encode($data);

        return $data;
    }

    /**
        * 解密字符串
        *
        * @param String 待解密字符串
        * @param string 解密秘鑰，若為空，則使用通用秘鑰
        * @return void
        */
    public function decrypt($input, $key = "") {
        if (empty($key)) $key = $this->KEY;
        $data = openssl_decrypt(base64_decode($input), $this->METHOD, $key, OPENSSL_RAW_DATA);

        return $data;
    }
}

先下載 PHPMailer，解壓后，將其放置你的項(xiàng)目中，并修改類中的引入路徑。

_init();
        $this->_baseURL = $_SERVER["REQUEST_SCHEME"] . "://" . $_SERVER["HTTP_HOST"];
    }

    private function _init() {
        if ($this->_email == null) {
            $mail = new PHPMailer(true);
            try {
                $mail->SMTPDebug = 0;
                $mail->isSMTP();
                $mail->Host = get_global_config("mail.Host");
                $mail->SMTPAuth = true;
                $mail->Username = get_global_config("mail.Username");
                $mail->Password = get_global_config("mail.Password");
                $mail->SMTPSecure = get_global_config("mail.SMTPSecure");
                $mail->Port = get_global_config("mail.Port");
                $mail->setFrom(get_global_config("mail.Username"), get_global_config("mail.Fromname"));
                $this->_email = $mail;
                return true;
            } catch (Exception $e) {
                // return null;
                return false;
            }
        }
        return true;
    }

    public function sendEmail($toEmail, $toUsername, $subject, $body) {
        if (!$this->_email) return false;
        try {
            $this->_email->addAddress($toEmail, $toUsername);
            $this->_email->isHTML(true);
            $this->_email->Subject = $subject;
            $this->_email->Body    = $body;
            // 當(dāng)郵件不支持 HTML 時(shí)顯示的郵件內(nèi)容
            $this->_email->AltBody = $body;
        
            $this->_email->send();
            // echo "Message has been sent";
            return true;
        } catch (Exception $e) {
            return false;
            // echo "Message could not be sent.";
            // echo "Mailer Error: " . $this->_email->ErrorInfo;
        }
    }
}

使用 Redis 模擬進(jìn)程鎖，參考至 discuz 的進(jìn)程鎖源碼。

cache = Roc::redis();
        $this->cache->select(Roc::get("redis.db"));
    }

    /**
     * 是否被鎖
     *
     * @param string 鎖名
     * @param integer 上鎖時(shí)間
     * @return boolean
     */
    public function islocked($process, $ttl = 0) {
        $ttl = $ttl < 1 ? 600 : intval($ttl);
        return $this->_status("get", $process) || $this->_find($process, $ttl);
    }

    /**
     * 解鎖
     *
     * @param string 鎖名
     * @return void
     */
    public function unlock($process) {
        $this->_status("rm", $process);
        $this->_cmd("rm", $process);
    }

    private function _status($action, $process) {
        static $plist = array();
        switch ($action) {
            case "set" : $plist[$process] = true; break;
            case "get" : return !empty($plist[$process]); break;
            case "rm" : $plist[$process] = null; break;
            case "clear" : $plist = array(); break;
        }
        return true;
    }

    private function _find($name, $ttl) {

        if(!$this->_cmd("get", $name)) {
            $this->_cmd("set", $name, $ttl);
            $ret = false;
        } else {
            $ret = true;
        }
        // $this->_status("set", $name);
        return $ret;
    }

    private function _cmd($cmd, $name, $ttl = 0) {
        return $this->_process_cmd_memory($cmd, $name, $ttl);
        // static $allowmem;
        // if($allowmem === null) {
        //     $allowmem = Roc::get("redis.db");
        // }
        // if($allowmem) {
        //     return self::_process_cmd_memory($cmd, $name, $ttl);
        // } else {
        //     return false;
        //     // return self::_process_cmd_db($cmd, $name, $ttl);
        // }
    }

    private function _process_cmd_memory($cmd, $name, $ttl = 0) {
        $ret = "";
        $name = "process_lock_".$name;
        switch ($cmd) {
            case "set" :
                $ret = $this->cache->setex($name, time(), $ttl);
                // $ret = memory("set", "process_lock_".$name, time(), $ttl);
                break;
            case "get" :
                $ret = $this->cache->get($name);
                // $ret = memory("get", "process_lock_".$name);
                break;
            case "rm" :
                $ret = $this->cache->delete($name);
                // $ret = memory("rm", "process_lock_".$name);
        }
        echo $cmd . ":";
        var_dump($ret);
        return $ret;
    }

    private function _process_cmd_db($cmd, $name, $ttl = 0) {
        $ret = "";
        switch ($cmd) {
            case "set":
                $ret = C::t("common_process")->insert(array("processid" => $name, "expiry" => time() + $ttl), FALSE, true);
                break;
            case "get":
                $ret = C::t("common_process")->fetch($name);
                if(empty($ret) || $ret["expiry"] < time()) {
                    $ret = false;
                } else {
                    $ret = true;
                }
                break;
            case "rm":
                $ret = C::t("common_process")->delete_process($name, time());
                break;
        }
        return $ret;
    }
}

一個(gè)簡(jiǎn)易的 Redis 操作類，支持在查找不到緩存時(shí)，進(jìn)行相對(duì)應(yīng)的回調(diào)操作。

cache = new Redis();
    }

    // ============= String 操作
    /**
     * 設(shè)置緩存
     *
     * @param String 緩存key值
     * @param String/Object 緩存數(shù)據(jù)，可為字符串可為數(shù)組。
     * @param Int 過(guò)期時(shí)間
     * @return Boolean
     */
    public function set($key, $value, $ttl = null) {
        if (is_array($value)) $value = serialize($value);
        if ($ttl !== null && $ttl > 0)
            return $this->cache->setex($this->_key($key), $ttl, $value);
        else
            return $this->cache->set($this->_key($key), $value);
    }

    /**
     * 獲取緩存數(shù)據(jù)
     *
     * @param String 值
     * @param Data 默認(rèn)值，設(shè)置后，如果緩存沒(méi)有數(shù)據(jù)則返回默認(rèn)值
     * @return Data
     */
    public function get($key, $callback = false) {
        $res = $this->cache->get($this->_key($key));
        if ($res === false && $callback === true) {
            $method_name = "_$key";
            if (method_exists($this, $method_name)) {
                return $this->$method_name();
            } else {
                return false;
            }
            
        }
        // 如果反序列化成功，則返回反序列化的數(shù)據(jù)。
        // @防止報(bào) warning。
        if (@unserialize($res) !== false) return unserialize($res);
        return $res;
    }

    /**
     * 刪除緩存
     *
     * @param String 需要?jiǎng)h除的鍵名
     * @return true or false
     */
    public function rm($key) {
        return $this->cache->delete($this->_key($key));
    }

    public function inc($key, $step = 1) {
        return $this->cache->incr($this->_key($key), $step);
    }

    public function dec($key, $step = 1) {
        return $this->cache->decr($this->_key($key), $step);
    }

    private function _key($key) {
        return $this->prefix . $key;
    }

    public function getMultiple($keys) {
        $_keys = [];
        foreach ($keys as $key) $_keys[] = $this->_key($key);
        return $this->cache->getMultiple($_keys);
    }

    // ============== Hash 操作
    public function hset($hash, $key, $value) {
        return $this->cache->hSet($hash, $key, $value);
    }

    public function hget($hash, $key) {
        return $this->cache->hGet($hash, $key);
    }

    public function hgetall($hash) {
        return $this->cache->hGetAll($hash);
    }

    public function hvals($hash) {
        return $this->cache->hVals($hash);
    }

    public function hkeys($hash) {
        return $this->cache->hKeys($hash);
    }


    // ================ 通用回調(diào)
    // Your callback code here.
}