Use:

$data = DB::select('select * from users where id = :id', ['id' => 1]);
print_r($data);

输出如下：

Array ( [0] => stdClass Object ( [id] => 1 [name] => parisa [last] => naderi [username] => png [password] => 2132 [role] => 0 ) )

如果您使用的不是Laravel，而是Elquent包，那么：

use \Illuminate\Database\Capsule\Manager as Capsule;
use \Illuminate\Events\Dispatcher;
use \Illuminate\Container\Container;

$capsule = new Capsule;

$capsule->addConnection([
    // connection details
]);
// Set the event dispatcher used by Eloquent models... (optional)
$capsule->setEventDispatcher(new Dispatcher(new Container));

// Make this Capsule instance available globally via static methods... (optional)
$capsule->setAsGlobal();

// Setup the Eloquent ORM...(optional unless you've used setEventDispatcher())
$capsule->bootEloquent();

// Listen for Query Events for Debug
$events = new Dispatcher;
$events->listen('illuminate.query', function($query, $bindings, $time, $name)
{
    // Format binding data for sql insertion
    foreach ($bindings as $i => $binding) {
        if ($binding instanceof \DateTime) {
            $bindings[$i] = $binding->format('\'Y-m-d H:i:s\'');
        } else if (is_string($binding)) {
            $bindings[$i] = "'$binding'";`enter code here`
        }
    }

    // Insert bindings into query
    $query = str_replace(array('%', '?'), array('%%', '%s'), $query);
    $query = vsprintf($query, $bindings);

    // Debug SQL queries
    echo 'SQL: [' . $query . ']';
});

$capsule->setEventDispatcher($events);

用于获取带有绑定的SQL查询的“可宏”替换。

在AppServiceProvider boot（）方法中添加以下宏函数。\Illuminate\Database\Query\Builder:：宏（'toRawSql'，function（）{return array_reduce（$this->getBindings（），函数（$sql，$binding）{return preg_replace（'/\？/'，is_numeric（$binding）$绑定：“”$结合“'”，$sql，1）；}，$this->to SQL（））；});为Elquent Builder添加别名。（Laravel 5.4+）\Illuminate\Database\Elquent\Builder:：宏（'toRawSql'，函数（）{return（$this->getQuery（）->toRawSql（））；});然后照常调试。（Laravel 5.4+）例如，查询生成器\日志：：debug（\DB:：table（'users'）->limit（1）->toRawSql（））例如，Elquent Builder\日志：：debug（\App\User:：limit（1）->toRawSql（））；

注意：从Laravel 5.1到5.3，由于Elquent Builder不使用Macroable特性，因此不能在RawSql中添加Elquent生成器的别名。遵循以下示例以实现相同的效果。

例如，Elquent Builder（Laravel 5.1-5.3）

\Log::debug(\App\User::limit(1)->getQuery()->toRawSql());

您可以收听“illumination.query”事件。在查询之前，添加以下事件侦听器：

Event::listen('illuminate.query', function($query, $params, $time, $conn) 
{ 
    dd(array($query, $params, $time, $conn));
});

DB::table('users')->get();

这将打印出如下内容：

array(4) {
  [0]=>
  string(21) "select * from "users""
  [1]=>
  array(0) {
  }
  [2]=>
  string(4) "0.94"
  [3]=>
  string(6) "sqlite"
}

打印上次查询

DB::enableQueryLog();

$query        = DB::getQueryLog();
$lastQuery    = end($query);
print_r($lastQuery);

我的方法是基于日志视图，只需修改app/Providers/AppServiceProvider.php文件：

将此代码添加到app/Provider/AppServiceProvider.php中

/**
 * Bootstrap any application services.
 *
 * @return void
 */
public function boot()
{
    //
    DB::listen(function ($query) {
        $querySql = str_replace(['?'], ['\'%s\''], $query->sql);
        $queryRawSql = vsprintf($querySql, $query->bindings);
        Log::debug('[SQL EXEC]', [
                "raw sql"  => $queryRawSql,
                "time" => $query->time,
            ]
        );
    });
}

我的sql句柄代码：

$users = DB::table('users')
    ->select(DB::raw('count(*) as user_count, username '))
    ->where('uid', '>=', 10)
    ->limit(100)
    ->groupBy('username')
    ->get()
;
dd($users);

参见日志存储/logs/laravel-2019-10-27.log：

[2019-10-27 17:39:17] local.DEBUG: [SQL EXEC] {"raw sql":"select count(*) as user_count, username  from `users` where `uid` >= '10' group by `username` limit 100","time":304.21}