全局变量适用于高并发抢购、秒杀，红包生成，数组算法处理等,由于添加了二维码生成功能
    安装本扩展之前需要安装libqrencode
    依赖安装方法如下：
        wget http://fukuchi.org/works/qrencode/qrencode-3.4.4.tar.gz
        tar zxvf qrencode-3.4.4.tar.gz
        cd qrencode-3.4.4/
        ./configure
        make && make install
        如果没有安装libpng和libgd，也需要安装
        安装方法如下：
        sudo apt-get install libpng-dev
        sudo apt-get install libgd-dev
        致力于做工具类，其他的正在开发中
    zqf扩展安装（兼容php7）
    首先下载源码git clone https://github.com/qieangel2013/zqf.git或者composer安装
    然后cd到当前目录/usr/local/php/bin/phpize
    ./configure --with-php-config=/usr/local/php/bin/php-config
    make && make install
    make过程中如果出现
    error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘qrcode_png’
    /home/zqf-master/zqf.c: In function ‘zim_zqf_savefile’:
    /home/zqf-master/zqf.c:525: error: ‘gdImagePtr’ undeclared (first use in this function)
    /home/zqf-master/zqf.c:525: error: (Each undeclared identifier is reported only once
    /home/zqf-master/zqf.c:525: error: for each function it appears in.)
    /home/zqf-master/zqf.c:525: error: expected ‘;’ before ‘im’
    /home/zqf-master/zqf.c:571: error: ‘im’ undeclared (first use in this function)
    说明没有安装gd库
    yum install gd-devel
    然后重新make && make install
    修改php.ini添加extension=zqf.so
    重启php-fpm

        $obj=new zqf();
        第一个参数是红包总额，第二个人参数红包数量，第三个参数默认代表拼手气红包，设置为1的话为普通红包
        拼手气红包
        $hongb= $obj->hongbao(10,8);或者$hongb= $obj->hongbao(10,8,0);返回数组为Array ( [0] => 1.33 [1] => 1.02 [2] => 1.28 [3] => 0.44 [4] => 1.37 [5] => 0.81 [6] => 1.81 [7] => 1.94 )
        普通红包，每个人数额一样设置第三个参数
        $hongb= $obj->hongbao(10,8,1);返回数组为Array ( [0] => 1.25 [1] => 1.25 [2] => 1.25 [3] => 1.25 [4] => 1.25 [5] => 1.25 [6] => 1.25 [7] => 1.25 )
        var_dump($hongb);

        首先安装php扩展zqf.so
        phpize来安装
        然后在php文件调用
        dl('zqf.so');或者phpini里加载
        $obj=new zqf();
        $counter= $obj->autoadd(0,1,0);（声明只针对多线程）
        echo $counter;

        $asd=array(23,1,21,4,19,89,200,1,78,3,4,7,1,0,88);
        $obj=new zqf();
        $quick= $obj->quicksort($asd);
        print_r($quick);Array ( [0] => 0 [1] => 1 [2] => 1 [3] => 1 [4] => 3 [5] => 4 [6] => 4 [7] => 7 [8] => 19 [9] => 21 [10] => 23 [11] => 78 [12] => 88 [13] => 89 [14] => 200 )

        $arr=array(10,20,4,12,69,1,90,56,23,12,89,78);
        $obj=new zqf();
        $result= $obj->findrepetition($arr);查找$arr重复项算法
        var_dump($result);//结果是Array ( [3] => 12 [9] => 12 )

        $arr=array(10,20,4,12,69,1,90,56,23,12,89,78);
        $obj=new zqf();
        $result= $obj->findval($arr,69);二分法快速查找$arr里的元素69，c底层会给数据进行排序
        var_dump($result);//结果是Array ( [8] => 69 [result] => Array ( [0] => 1 [1] => 4 [2] => 10 [3] => 12 [4] => 12 [5] => 20 [6] => 23 [7] => 56 [8] => 69 [9] => 78 [10] => 89 [11] => 90 ) )

        $obj=new zqf();
        $obj->savefile('https://www.baidu.com/s?wd=昌平香堂','./test.png',500);第一个参数是url，第二参数是保存路径，第三个参数是二维码长或者宽
        生成透明二维码：
         $obj->savefile('https://www.baidu.com/s?wd=昌平香堂','./test.png',500,1);第四个参数默认不生成透明，要想生成透明得传一个参数
     生成带有logo的二维码：
     $obj->savefile('https://www.baidu.com/s?wd=昌平香堂','./test.png',500,0,"./logo.png");第五个参数是logo的路径，现在只支持png格式的logo图片

php-qrencode代码:
<?php
$t1 = microtime(true);
$obj=new zqf();
    $obj->savefile('https://www.baidu.com/s?wd=昌平香堂','./test.png',500);
$t2 = microtime(true);
echo (($t2-$t1)*1000).':ms';
?>

运行时间:0.60701370239258:ms

phpqrcode代码:

<?php
include('./phpqrcode/phpqrcode.php'); 
$t1 = microtime(true);
QRcode::png("https://www.baidu.com/s?wd=昌平香堂",'./test.png',QR_ECLEVEL_Q,500);
$t2 = microtime(true);
echo (($t2-$t1)*1000).':ms';
?>
运行时间:23.189067840576:ms

github：https://github.com/qieangel2013/zqf
oschina：https://gitee.com/qieangel2013/zqf

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