// 先引入DB

use DB;

// 或者直接使用 \DB::

 DB::listen(function($sql, $bindings, $time) {

        dump($sql);

      });

use DB;

// 或者直接使用 \DB::

// 只能接受一个参数

QueryExecuted {#84 ▼

 +sql: "select * from `posts` where `slug` = ? limit 1"

 +bindings: array:1 [▶]

 +time: 0.59

 +connection: MySqlConnection {#85 ▶}

 +connectionName: "mysql"

}

 DB::listen(function($sql) {

        dump($sql);

        // echo $sql->sql;

        // dump($sql->bindings);

      });

// 如果要放入日志文件中

DB::listen(

  function ($sql) {

    // $sql is an object with the properties:

    // sql: The query

    // bindings: the sql query variables

    // time: The execution time for the query

    // connectionName: The name of the connection

    // To save the executed queries to file:

    // Process the sql and the bindings:

    foreach ($sql->bindings as $i => $binding) {

      if ($binding instanceof \DateTime) {

        $sql->bindings[$i] = $binding->format('\'Y-m-d H:i:s\'');

      } else {

        if (is_string($binding)) {

          $sql->bindings[$i] = "'$binding'";

        }

      }

    }

    // Insert bindings into query

    $query = str_replace(array('%', '?'), array('%%', '%s'), $sql->sql);

    $query = vsprintf($query, $sql->bindings);

    // Save the query to file

    $logFile = fopen(

      storage_path('logs' . DIRECTORY_SEPARATOR . date('Y-m-d') . '_query.log'),

      'a+'

    );

    fwrite($logFile, date('Y-m-d H:i:s') . ': ' . $query . PHP_EOL);

    fclose($logFile);

  }

);