Category: php

Categories
php

wordpress debug

define( ‘WP_DEBUG’, false );

再wp-config.php 配置这两个值可以在也买你上输出debug信息

Categories
php

wordpress 插件下载

要执行请求的操作，wordPress需要访问您网页服务器的权限。 请输入您的FTP登录凭据以继续。 如果您忘记了您的登录凭据（如用户名、密码），请联系您的主机提供商

sudo chown -R www-data /var/www/wordpress
sudo chmod -R 775 /var/www/wordpress

修改wordpress目录拥有者为www-data

Categories
nginx php

nginx 下 laravel 部署

server {
                listen       8080;
                server_name  laravel.localhost;

                client_max_body_size 10M;
                # Load configuration files for the default server block.

                

                location / {
                        root           D://robin-admin/public;
                        index  index.html index.htm index.php;
                        try_files $uri $uri/ /index.php?$query_string;
                }

                location ~ \.php$ {
                    root           D://robin-admin/public;
                    fastcgi_pass   127.0.0.1:9000;
                    fastcgi_index  index.php;
                    fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
                    include        fastcgi_params;
                }

                error_page 404 /404.html;
                        location = /40x.html {
                }

                error_page 500 502 503 504 /50x.html;
                        location = /50x.html {
                }
    }

nginx 根目录指向laravel 的下的public 文件夹

try_files $uri $uri/ /index.php?$query_string; 可以有效重新访问后缀（不需要显式指明php后缀）

Categories
php

php artisan tinker

今天，我们将通过介绍 Laravel 中一个不太为人所知的功能，来展示如何快捷的调试数据库中的数据。通过使用 Laravel artisan 内建的 php artisan tinker, 我们可以很方便的看到数据库中的数据并且执行各种想要的操作。

Laravel artisan 的 tinker 是一个 REPL (read-eval-print-loop)，REPL 是指交互式命令行界面，它可以让你输入一段代码去执行，并把执行结果直接打印到命令行界面里。

// see the count of all users
App\User::count();

// find a specific user and see their attributes
App\User::where('username', 'samuel')->first();

// find the relationships of a user
$user = App\User::with('posts')->first();
$user->posts;
factory(App\User::class, 10)->create();
App\User::all();
App\User::count();
$user = new App\User;
$user->name = "Wruce Bayne";
$user->email = "iambatman@savegotham.com";
$user->save();
doc XXX

查阅某个方法的文档

show XXX

显示某个方法的代码

Categories
php

laravel Form magic 方法

laravel 的form 对象 有magic方法 可以快速添加表单项

/**
 * Class Form.
 *
 * @method Field\Text           text($name, $label = '')
 * @method Field\Password       password($name, $label = '')
 * @method Field\Checkbox       checkbox($name, $label = '')
 * @method Field\CheckboxButton checkboxButton($name, $label = '')
 * @method Field\CheckboxCard   checkboxCard($name, $label = '')
 * @method Field\Radio          radio($name, $label = '')
 * @method Field\RadioButton    radioButton($name, $label = '')
 * @method Field\RadioCard      radioCard($name, $label = '')
 * @method Field\Select         select($name, $label = '')
 * @method Field\MultipleSelect multipleSelect($name, $label = '')
 * @method Field\Textarea       textarea($name, $label = '')
 * @method Field\Hidden         hidden($name, $label = '')
 * @method Field\Id             id($name, $label = '')
 * @method Field\Ip             ip($name, $label = '')
 * @method Field\Url            url($name, $label = '')
 * @method Field\Color          color($name, $label = '')
 * @method Field\Email          email($name, $label = '')
 * @method Field\Mobile         mobile($name, $label = '')
 * @method Field\Slider         slider($name, $label = '')
 * @method Field\File           file($name, $label = '')
 * @method Field\Image          image($name, $label = '')
 * @method Field\Date           date($name, $label = '')
 * @method Field\Datetime       datetime($name, $label = '')
 * @method Field\Time           time($name, $label = '')
 * @method Field\Year           year($column, $label = '')
 * @method Field\Month          month($column, $label = '')
 * @method Field\DateRange      dateRange($start, $end, $label = '')
 * @method Field\DateTimeRange  dateTimeRange($start, $end, $label = '')
 * @method Field\TimeRange      timeRange($start, $end, $label = '')
 * @method Field\Number         number($name, $label = '')
 * @method Field\Currency       currency($name, $label = '')
 * @method Field\SwitchField    switch($name, $label = '')
 * @method Field\Display        display($name, $label = '')
 * @method Field\Rate           rate($name, $label = '')
 * @method Field\Divider        divider($title = '')
 * @method Field\Decimal        decimal($column, $label = '')
 * @method Field\Html           html($html)
 * @method Field\Tags           tags($column, $label = '')
 * @method Field\Icon           icon($column, $label = '')
 * @method Field\Captcha        captcha($column, $label = '')
 * @method Field\Listbox        listbox($column, $label = '')
 * @method Field\Table          table($column, $label, $builder)
 * @method Field\Timezone       timezone($column, $label = '')
 * @method Field\KeyValue       keyValue($column, $label = '')
 * @method Field\ListField      list($column, $label = '')
 * @method mixed                handle(Request $request)
 */

真实调用的方法

 /**
     * Generate a Field object and add to form builder if Field exists.
     *
     * @param string $method
     * @param array  $arguments
     *
     * @return Field|$this
     */
    public function __call($method, $arguments)
    {
        if (!$this->hasField($method)) {
            return $this;
        }

        $class = BaseForm::$availableFields[$method];

        $field = new $class(Arr::get($arguments, 0), array_slice($arguments, 1));

        return tap($field, function ($field) {
            $this->pushField($field);
        });
    }
Categories
php

php __call

__call 属于php 类对象的magic 方法

当调用一个不存在与类定义的方法 就会 在call中调用

 function __call($name,$arguments) {  

 }

$name 为方法名字

$argument 为方法参数

Categories
php

DB Facade

使用laravel 的数据库Facade 可以比较好的 执行数据库sql

$array = DB::select("select * from admin_users");
//raw 执行sql      

$object = DB::table("admin_users")->where("id","=","1")->first();
//获取查询第一条

$array = DB::table("admin_users")->where("id","=","1")->get();
//
get获取数据列表
       
$array = DB::table("admin_users")->where("id","=","1")->skip(0)->take(1)->get();
//分页查询

$array = DB::table("admin_users")->where("id","=","1")->skip(0)->limit(1)->get();
//分页查询

DB::transaction(function (){
           //内部执行开启事务
});

//手动控制事务
DB::beginTransaction();
DB::commit();
DB::rollBack();
Categories
php

php reactive socket

php socket 第三方库 composer require react/socket

该库针对 socket / 流 做事件监听（应该是epoll ）主线程做事件循环 （reactive）所以该reactive 框架貌似只能在 linux下使用

server

<?php

require '../vendor/autoload.php';

echo "enter script\n";

$loop = React\EventLoop\Factory::create();
$socket = new React\Socket\Server('127.0.0.1:8080', $loop);

$socket->on('connection', function (React\Socket\ConnectionInterface $connection) {
    echo "" . $connection->getRemoteAddress() . "client connected\n";
    $connection->write("Hello " . $connection->getRemoteAddress() . "!\n");
    $connection->write("Welcome to this amazing server!\n");
    $connection->write("Here's a tip: don't say anything.\n");

    $connection->on('data', function ($data) use ($connection) {
        echo "" . $data . "\n";
        //$connection->close();
    });
});

echo "server started at 8080\n";

$loop->run();

其中$loop 就是事件循环对象

client

<?php

require '../vendor/autoload.php';


$loop = React\EventLoop\Factory::create();
$connector = new React\Socket\Connector($loop);

$connector->connect('127.0.0.1:8080')->then(function (React\Socket\ConnectionInterface $connection) use ($loop) {
    echo "client connected\n";
    $connection->write("Hello World!\n");
    $connection->on('data', function ($data) use ($loop, $connection) {
        echo "" . $data . "\n";
        //$connection->close();
        //$output = new React\Stream\WritableResourceStream(fopen("./client.txt", "w"),$loop);
        //$output = fopen("./client.txt", "w");
        //fwrite($output,$data);
        //$output->write("" . $data . "\n");
        while($input = fgets(STDIN, 10))
        {
            echo $input."\n";
            $connection->write($input);

        }
    });
    /*
    $input = new React\Stream\ReadableResourceStream(STDIN,$loop);
    $input->on("data",function ($data) use ($connection) {
       $connection->write($data);
    });*/
    //$output = fopen("./client.txt", "w");
    //$steam = new React\Stream\WritableResourceStream($output,$loop);
    //$connection->pipe($steam);



});

$loop->run();

最亮眼的是 将文件描述符（标准输出流 文件输出流）fd 包装成一个响应式流对象 通过pipe实现管道功能 而且生命周期相同 会同时关闭。

Categories
php

composer 设置aliyun源

composer设置阿里云镜像源

  1. 首先把默认的源给禁用掉

composer config -g secure-http false
 

  1. 再修改镜像源 这里我使用阿里的源

composer config -g repo.packagist composer https://mirrors.aliyun.com/composer/

  1. 修改成功后可以先查看一下配置

composer config -g -l
 

  1. 第二行repositories.packagist.org.url 如果是阿里的就代表成功

composer config -g -l
[repositories.packagist.org.type] composer
[repositories.packagist.org.url] https://mirrors.aliyun.com/composer/

Categories
php

laravel 入口

php 通过 symfony/http-foundation（http请求响应封装） 框架捕获http请求

laravel kernel 类 为laravel http 入口

middleware 类似于 过滤器 可以执行请求处理 然后next 执行处理链 必定有 handle 方法 当需要处理请求前操作 在调用 $next 前修改请求信息 当需要处理请求后 或者 在响应上操作 则 在$next后 修改信息 且返回结果必定为 $response对象

public function handle($request, Closure $next)
    {
        // Check if we're dealing with CORS and if we should handle it
        if (! $this->shouldRun($request)) {
            return $next($request);
        }

        // For Preflight, return the Preflight response
        if ($this->cors->isPreflightRequest($request)) {
            $response = $this->cors->handlePreflightRequest($request);

            $this->cors->varyHeader($response, 'Access-Control-Request-Method');

            return $response;
        }

        // Add the headers on the Request Handled event as fallback in case of exceptions
        if (class_exists(RequestHandled::class) && $this->container->bound('events')) {
            $this->container->make('events')->listen(RequestHandled::class, function (RequestHandled $event) {
                $this->addHeaders($event->request, $event->response);
            });
        }

        // Handle the request
        $response = $next($request);

        if ($request->getMethod() === 'OPTIONS') {
            $this->cors->varyHeader($response, 'Access-Control-Request-Method');
        }

        return $this->addHeaders($request, $response);
    }