a[i]_address = base_address + i * data_type_size

int main(int argc, char* argv[]){
    int i = 0;
    int arr[3] = {0};
    for(; i<=3; i++){
        arr[i] = 0;
        printf("hello world\n");
    }
    return 0;
}

mysql> create table T (
ID int primary key,
k int NOT NULL DEFAULT 0,
s varchar(16) NOT NULL DEFAULT '',
index k(k))
engine=InnoDB;

insert into T values(100,1, 'aa'),(200,2,'bb'),(300,3,'cc'),(500,5,'ee'),(600,6,'ff'),(700,7,'gg');

select id from T where k betwee 3 and 5

mysql> select * from name like '%a' and number = 140

<?php

/**
 * 一个链表结构
 * Class ListNode
 */
class ListNode {
    public $val = 0;
    public $next = null;

    function __construct($val)
    {
        $this->val = $val;
    }
}

/**
 * 链表尾部追加
 * @param $node
 * @param $val
 */
function addList($header ,$val)
{
    $scan = $header;

    while(!is_null($scan->next)){
        $scan = $scan->next;//遍历到尾部
    }

    $scan->next =  new ListNode($val);

}

/**
 * 打印这个链表
 * @param $header
 */
function seeList($header)
{
    $scan = $header;
    while(!is_null($scan->next)){
        echo $scan->val.PHP_EOL;
        $scan = $scan->next;
    }
    echo $scan->val.PHP_EOL;
}

/**
 * 反转
 * @param $header
 * @return string
 */
function rev($header)
{

    $re = '';

    while($header){
        $temp = $header->next;
        $header->next = $re;
        $re = $header;
        $header = $temp;

    }

    return $re;

}


$header = new ListNode(1);
addList($header ,2);
addList($header ,3);
addList($header ,4);
seeList(rev($header));

...
 extra_hosts:
      - dockerhost:$DOCKERHOST
...

export DOCKERHOST=$(ifconfig | grep -E "([0-9]{1,3}\.){3}[0-9]{1,3}" | grep -v 127.0.0.1 | awk '{ print $2 }' | cut -f2 -d: | head -n1) \
&& docker-compose -f docker-compose.yml up

sudo ifconfig lo0 alias 10.0.1.1

php.ini

#远程调试IP
xdebug.remote_host= 10.0.1.1
#请求端口
xdebug.remote_port = 9123
#约定的调试key
xdebug.idekey = PHPSTORM
#日志目录
xdebug.remote_log='/www/xdebug_php7.log'
#开启
xdebug.remote_enable = 1

#第一种方式
#开启binlog日志
log_bin=ON
#binlog日志的基本文件名
log_bin_basename=/var/lib/mysql/mysql-bin
#binlog文件的索引文件，管理所有binlog文件
log_bin_index=/var/lib/mysql/mysql-bin.index

#第二种方式，等同于上面三行
log-bin=/var/lib/mysql/mysql-bin
binlog_format =  row      #行的日志格式

show variables like '%log_bin%';

//这段代码讲向用户请求通知的权限，返回3种状态
//granted（被授予) denied（被拒绝） default（默认）

Notification.requestPermission().then(function(result) {
  if (result === 'denied') {
    console.log('拒绝');
    return;
  }
  if (result === 'default') {
    console.log('默认');
    return;
  }
 if (result === 'granted') {
    console.log('允许');
    return;
  }
});

var options = {
     body: '你好呀，这是一个测试',
     icon: ''
 }
 var n = new Notification('张俊杰的博客测试dome',options);

if ('serviceWorker' in navigator && 'PushManager' in window) {
  console.log('Service Worker and Push is supported');

  navigator.serviceWorker.register('https://www.phpzjj.com/js/app/sw.js')
  .then(function(swReg) {
    console.log('Service Worker is registered', swReg);

    swRegistration = swReg;
  })
  .catch(function(error) {
    console.error('Service Worker Error', error);
  });
} else {
  console.warn('Push messaging is not supported');
  pushButton.textContent = 'Push Not Supported';
}

'use strict';
var url = ''
self.addEventListener('push', function(event) {


    const data = event.data.json()
    const title = data['title'];
    url = data['url']
    const options = {
        body: data['body'],
        icon: 'images/icon.png',
        badge: 'images/badge.png'
    };

    event.waitUntil(self.registration.showNotification(title, options));
});

self.addEventListener('notificationclick', function(event) {

    event.notification.close();

    event.waitUntil(
        clients.openWindow(url)
    );
});

/**
 * 2019年02月16日18:33:22
 * 基于Notification的web推送
 */
var config = new function (){
  return {
    debug:true, //打开错误提示
    publicKey:'BLMtwQjfLMjmcGjcoX9AhSnEd6yl5JAAcyG9UkyNB0RL_AWuN8bLGf0RE2JWV6LBEsApgXtCdWiHn74jrE4dv_s'
  }
}

let swRegistration = null;

/**
 * 申请注册Notification权限
 *
 * no:浏览器不支持
 * agree：用户同意过
 * success：用户第一次同意
 * fail：用户拒绝
 *
 */

function register(callback) {
  var state = ''
  // 浏览器是否支持
  if (!("Notification" in window)) {

    if(config['debug']){
      console.log('浏览器不支持');
    }

    callback('no')
  }

  // 检查用户是否同意接受通知
  else if (Notification.permission === "granted") {
    callback('agree')
  }
  // 否则我们需要向用户获取权限
  else if (Notification.permission !== 'denied') {

    Notification.requestPermission(function (permission) {
      // 申请权限

      if (permission === "granted") {
        callback('success')
      }else{
        callback('fail')
      }

    });
  }

}


function subscribeUser(callback) {


  const applicationServerKey = urlB64ToUint8Array(config["publicKey"]);

  return swRegistration.pushManager.subscribe({
        userVisibleOnly: true,
        applicationServerKey: applicationServerKey
      })
      .then(function(subscription) {
        callback(Base64.encode(JSON.stringify(subscription)))
      })
      .catch(function(err) {
        console.log('Failed to subscribe the user: ', err);
      });
}



/**
 * 接口加密
 * @param {*} base64String
 */
function urlB64ToUint8Array(base64String) {

  const padding = '='.repeat((4 - base64String.length % 4) % 4);
  const base64 = (base64String + padding)
      .replace(/\-/g, '+')
      .replace(/_/g, '/');

  const rawData = window.atob(base64);
  const outputArray = new Uint8Array(rawData.length);

  for (let i = 0; i < rawData.length; ++i) {
    outputArray[i] = rawData.charCodeAt(i);
  }
  return outputArray;
}




//注册
if ('serviceWorker' in navigator && 'PushManager' in window) {
  console.log('Service Worker and Push is supported');

  navigator.serviceWorker.register('/js/app/sw.js')
      .then(function(swReg) {
        swRegistration = swReg;
      })
      .catch(function(error) {
        console.error('Service Worker Error', error);
      });
} else {
  console.warn('Push messaging is not supported');
}


var Base64 = {

  // private property
  _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",

  // public method for encoding
  encode: function(input) {
    var output = "";
    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
    var i = 0;

    input = Base64._utf8_encode(input);

    while (i < input.length) {

      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);

      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;

      if (isNaN(chr2)) {
        enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
        enc4 = 64;
      }

      output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);

    }

    return output;
  },

  // public method for decoding
  decode: function(input) {
    var output = "";
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0;

    input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

    while (i < input.length) {

      enc1 = this._keyStr.indexOf(input.charAt(i++));
      enc2 = this._keyStr.indexOf(input.charAt(i++));
      enc3 = this._keyStr.indexOf(input.charAt(i++));
      enc4 = this._keyStr.indexOf(input.charAt(i++));

      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;

      output = output + String.fromCharCode(chr1);

      if (enc3 != 64) {
        output = output + String.fromCharCode(chr2);
      }
      if (enc4 != 64) {
        output = output + String.fromCharCode(chr3);
      }

    }

    output = Base64._utf8_decode(output);

    return output;

  },

  // private method for UTF-8 encoding
  _utf8_encode: function(string) {
    string = string.replace(/\r\n/g, "\n");
    var utftext = "";

    for (var n = 0; n < string.length; n++) {

      var c = string.charCodeAt(n);

      if (c < 128) {
        utftext += String.fromCharCode(c);
      } else if ((c > 127) && (c < 2048)) {
        utftext += String.fromCharCode((c >> 6) | 192);
        utftext += String.fromCharCode((c & 63) | 128);
      } else {
        utftext += String.fromCharCode((c >> 12) | 224);
        utftext += String.fromCharCode(((c >> 6) & 63) | 128);
        utftext += String.fromCharCode((c & 63) | 128);
      }

    }

    return utftext;
  },

  // private method for UTF-8 decoding
  _utf8_decode: function(utftext) {
    var string = "";
    var i = 0;
    var c = c1 = c2 = 0;

    while (i < utftext.length) {

      c = utftext.charCodeAt(i);

      if (c < 128) {
        string += String.fromCharCode(c);
        i++;
      } else if ((c > 191) && (c < 224)) {
        c2 = utftext.charCodeAt(i + 1);
        string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
        i += 2;
      } else {
        c2 = utftext.charCodeAt(i + 1);
        c3 = utftext.charCodeAt(i + 2);
        string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
        i += 3;
      }

    }

    return string;
  }

}

//为了满足日后的一些统计要求这边加上了回调，本来想封装成插件用配置操作，但是我懒。。。而且功能也实现了，上面代码无需多关心有兴趣可以看看如果是实际使用替换 publicKey 即可

var register = register(function(e){
  if(config['debug']){
    console.log(e);
  }

  if(e ==="success"){

     subscribeUser(function(e){
       $.post("/api/push", {token: e});
     })

  }

})

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

{"endpoint":"https://updates.push.services.mozilla.com/wpush/v2/gAAAAABcerxugojxNLwajSzqwesrpuT2M2XR1Iv5vivUsO5WHk-D7vLagwYwfDFCzRhdnb-0pGG_c4fKK3FKAQGWpuJv9uPu2Gl-3dIfG4F5v_QKjXZl2DRs3b6DAU4rcxeBUWMDJD0V34MTksqxmHezYf8_jQr8_y0BrF7ztZy2Xpef5zDc7A0","keys":{"auth":"qp-x9SMjCRaK9a-eLGRRWw","p256dh":"BF7jbuSfV3ZSeWElEvR2HkDYgHx9qlG-EEtun9eFNJjEDiURtVSu1Zi15rouruckP3doL8QDfKhtR0qWwpf1nGY"}}

new WebPush($auth,[],10,['proxy' => 'udp://192.168.1.5:1087'] );

sudo yum install python-setuptools && easy_install pip

sudo vi /etc/shadowsocks.json

{
  "server":"my_server_ip",
  "local_address": "127.0.0.1",
  "local_port":1080,
  "server_port":my_server_port,
  "password":"my_password",
  "timeout":300,
  "method":"aes-256-cfb"
}

//正常后台启动
sslocal -c /etc/shadowsocks.json -d start
//因为服务端和用户端在一台，会有点冲突
nohup sslocal -c /etc/shadowsocks.json &

curl --socks5 127.0.0.1:5343 https://www.phpzjj.com/