Builder macro to output raw SQL with all bindings safely encoded with support for Eloquent Builder and Query Builder.

AppServiceProvider.php

// Support for Query Builder
Illuminate\Database\Query\Builder::macro('toRawSql', function() {
    return array_reduce($this->getBindings(), function ($sql, $binding) {
        $binding = str_replace(['\\', "'"], ['\\\\', "\'"], $binding);
        return preg_replace('/\?/', is_numeric($binding)
            ? $binding
            : "'" . $binding . "'", $sql, 1);
    }, $this->toSql());
});

// Support for Eloquent Builder
Illuminate\Database\Eloquent\Builder::macro('toRawSql', function(){
    return ($this->getQuery()->toRawSql());
});

// Usage
Model::where('foo', 'bar')->where('baz', 1)->toRawSql();
DB::table('models')->where('foo', 'bar')->where('baz', 1)->toRawSql();

// Output
select * from model where "foo" = 'bar' and "baz" = 1;