发现好多小伙伴调试代码时对sql 打印不方便，特整理怎么实时在日志文件中打印所执行的 sql 语句

1、在 Listeners目录新建 QueryListener.php 文件 代码如下：

<?php
namespace App\Listeners;

use Illuminate\Database\Events\QueryExecuted;

class QueryListener
{
    public function handle(QueryExecuted $event)
    {
        if (env('APP_ENV', 'production') == 'local') {
            $sql = str_replace('?', "'%s'", $event->sql);
            $log = vsprintf($sql, $event->bindings);
            $this->put_log('sql', $log);
        }
    }

    private function put_log($file = 'app', $content = '')
    {
        $data = date('Y-m-d');
        $cut_line = str_repeat("-", 100);
        is_dir(storage_path('logs/sql')) or mkdir (storage_path('logs/sql'), 0777, true); // 文件夹不存在则创建
        $content = '[' . date('Y-m-d H:i:s') . "]" . $content;
        @file_put_contents(storage_path('logs/sql/' . $file . '-' . $data . '.log'), $content . "\n" . $cut_line . "\n\n", FILE_APPEND);
    }
}

2、在Providers/EventServiceProvider.php 添加如下代码

<?php

namespace App\Providers;

use Laravel\Lumen\Providers\EventServiceProvider as ServiceProvider;

class EventServiceProvider extends ServiceProvider
{
    /**
     * The event listener mappings for the application.
     *
     * @var array
     */
    protected $listen = [

        'Illuminate\Database\Events\QueryExecuted' => [
            'App\Listeners\QueryListener'
        ],
    ];
}

3、在 bootstrap/app.php文件中开启 EventServiceProvider注册即可

 $app->register(App\Providers\EventServiceProvider::class);

4、接下来写一个 sql 语句就能在 storage/logs/sql看到生成的 sql 日志了

    app('db')->where('id', '>', '5')->get();

希望能对大家有所帮助