我创建了一些简单的函数来从一些查询中获取SQL和绑定。

/**
 * getSql
 *
 * Usage:
 * getSql( DB::table("users") )
 * 
 * Get the current SQL and bindings
 * 
 * @param  mixed  $query  Relation / Eloquent Builder / Query Builder
 * @return array          Array with sql and bindings or else false
 */
function getSql($query)
{
    if( $query instanceof Illuminate\Database\Eloquent\Relations\Relation )
    {
        $query = $query->getBaseQuery();
    }

    if( $query instanceof Illuminate\Database\Eloquent\Builder )
    {
        $query = $query->getQuery();
    }

    if( $query instanceof Illuminate\Database\Query\Builder )
    {
        return [ 'query' => $query->toSql(), 'bindings' => $query->getBindings() ];
    }

    return false;
}

/**
 * logQuery
 *
 * Get the SQL from a query in a closure
 *
 * Usage:
 * logQueries(function() {
 *     return User::first()->applications;
 * });
 * 
 * @param  closure $callback              function to call some queries in
 * @return Illuminate\Support\Collection  Collection of queries
 */
function logQueries(closure $callback) 
{
    // check if query logging is enabled
    $logging = DB::logging();

    // Get number of queries
    $numberOfQueries = count(DB::getQueryLog());

    // if logging not enabled, temporarily enable it
    if( !$logging ) DB::enableQueryLog();

    $query = $callback();

    $lastQuery = getSql($query);

    // Get querylog
    $queries = new Illuminate\Support\Collection( DB::getQueryLog() );

    // calculate the number of queries done in callback
    $queryCount = $queries->count() - $numberOfQueries;

    // Get last queries
    $lastQueries = $queries->take(-$queryCount);

    // disable query logging
    if( !$logging ) DB::disableQueryLog();

    // if callback returns a builder object, return the sql and bindings of it
    if( $lastQuery )
    {
        $lastQueries->push($lastQuery);
    }

    return $lastQueries;
}

用法：

getSql( DB::table('users') );
// returns 
// [
//     "sql" => "select * from `users`",
//     "bindings" => [],
// ]

getSql( $project->rooms() );
// returns
// [
//     "sql" => "select * from `rooms` where `rooms`.`project_id` = ? and `rooms`.`project_id` is not null",
//     "bindings" => [ 7 ],
// ]

我创建了一些简单的函数来从一些查询中获取SQL和绑定。

/**
 * getSql
 *
 * Usage:
 * getSql( DB::table("users") )
 * 
 * Get the current SQL and bindings
 * 
 * @param  mixed  $query  Relation / Eloquent Builder / Query Builder
 * @return array          Array with sql and bindings or else false
 */
function getSql($query)
{
    if( $query instanceof Illuminate\Database\Eloquent\Relations\Relation )
    {
        $query = $query->getBaseQuery();
    }

    if( $query instanceof Illuminate\Database\Eloquent\Builder )
    {
        $query = $query->getQuery();
    }

    if( $query instanceof Illuminate\Database\Query\Builder )
    {
        return [ 'query' => $query->toSql(), 'bindings' => $query->getBindings() ];
    }

    return false;
}

/**
 * logQuery
 *
 * Get the SQL from a query in a closure
 *
 * Usage:
 * logQueries(function() {
 *     return User::first()->applications;
 * });
 * 
 * @param  closure $callback              function to call some queries in
 * @return Illuminate\Support\Collection  Collection of queries
 */
function logQueries(closure $callback) 
{
    // check if query logging is enabled
    $logging = DB::logging();

    // Get number of queries
    $numberOfQueries = count(DB::getQueryLog());

    // if logging not enabled, temporarily enable it
    if( !$logging ) DB::enableQueryLog();

    $query = $callback();

    $lastQuery = getSql($query);

    // Get querylog
    $queries = new Illuminate\Support\Collection( DB::getQueryLog() );

    // calculate the number of queries done in callback
    $queryCount = $queries->count() - $numberOfQueries;

    // Get last queries
    $lastQueries = $queries->take(-$queryCount);

    // disable query logging
    if( !$logging ) DB::disableQueryLog();

    // if callback returns a builder object, return the sql and bindings of it
    if( $lastQuery )
    {
        $lastQueries->push($lastQuery);
    }

    return $lastQueries;
}

用法：

getSql( DB::table('users') );
// returns 
// [
//     "sql" => "select * from `users`",
//     "bindings" => [],
// ]

getSql( $project->rooms() );
// returns
// [
//     "sql" => "select * from `rooms` where `rooms`.`project_id` = ? and `rooms`.`project_id` is not null",
//     "bindings" => [ 7 ],
// ]

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());

如果您试图使用Illuminate而不使用Laravel获取日志，请使用：

\Illuminate\Database\Capsule\Manager::getQueryLog();

你也可以像这样设置一个快速功能：

function logger()
{
    $queries = \Illuminate\Database\Capsule\Manager::getQueryLog();
    $formattedQueries = [];
    foreach ($queries as $query) :
        $prep = $query['query'];

        foreach ($query['bindings'] as $binding) :

            if (is_bool($binding)) {
                $val = $binding === true ? 'TRUE' : 'FALSE';
            } else if (is_numeric($binding)) {
                $val = $binding;
            } else {
                $val = "'$binding'";
            }

            $prep = preg_replace("#\?#", $val, $prep, 1);
        endforeach;
        $formattedQueries[] = $prep;
    endforeach;
    return $formattedQueries;
}

EDIT

更新的版本似乎在默认情况下禁用了查询日志记录（上面返回了一个空数组）。要重新启用，在初始化Capsule Manager时，获取连接的实例并调用enableQueryLog方法

$capsule::connection()->enableQueryLog();

再次编辑

考虑到实际问题，您实际上可以执行以下操作来转换当前的单个查询，而不是之前的所有查询：

$sql = $query->toSql();
$bindings = $query->getBindings();

将此代码添加到AppServiceProvider并获取日志文件

         \DB::listen(function ($query) {
             \Log::info(
                 $query->sql,
                 $query->bindings,
                 $query->time
             );
         });

为了记录所有执行的查询，可以使用DB:：enableQueryLog（）icw DB:：getQueryLog（（）。输出具有以下结构。

[
  [
    "query" => "select * from "users" where name = ?"
    "bindings" => ["John Doe"]
    "time" => 0.34
  ],
  ...
]

此外，我在这里结合了一些答案，以便获得完美的函数，用编译的绑定解析sql。见下文。我甚至创建了一个实现此功能的自定义生成器类，例如User:：where（'name'，'JohnDoe'）->parse（）；

function parse_sql(string $sql, array $bindings) : string
{
  $compiled_bindings  = array_map('compile_binding', $bindings);

  return preg_replace_array("/\?/", $compiled_bindings, $sql);
}

function compile_binding($binding)
{
  $grammar = new MySqlGrammar;

  if (is_bool($binding))
  {
    return (int)$binding; //This line depends on the database implementation
  }

  if(is_string($binding))
  {
    return "'$binding'";
  }

  if ($binding instanceof DateTimeInterface)
  {
    return $binding->format($grammar->getDateFormat());
  }

  return $binding;
}