如何用Laravel的url生成器助手生成一个url，参数不在最后？

Normally it is very simple to add parameters using the Laravel url helper method -- as simple as:

url("foo/show/", [333]); // site.com/foo/show/333

However, how do you do it when parameters are at a midpoint, such as:

url("foo/?/bar/?/show", [333,444]); 

I have tried the following which all fail (some come close though):

url("foo/?/bar/?/show", [333,444]); 
// site.com/foo//333/444?/bar/?/show

url("foo/{a}/bar/{b}/show", [333,444]);
// site.com/foo/{a}/bar/{b}/show/333/444

url("foo/{a}/bar/{b}/show", ['a' => 333, 'b' => 444]);
// site.com/foo/{a}/bar/{b}/show/333/444

The ? is obviously important, because it gets close to the result...

Note

I am specifically talking about unnamed routes. So the route function is not in question. Named routes aren't possible in the current project, so I need to reiterate I am looking for the use of the url method.

I 100% agree that normally named routes are the way to go.

Try this:

url(sprintf("foo/%d/bar/%d/show", 333, 444)); 

If you name your routes, you can use the route function.

Route::get('some/{test}/{a}/testing', ['as' => 'testRoute', 'uses' => 'SomeController@someMethod']);

Route::get('test', function() {
    echo route('testRoute', ['test' => 'green', 'a' => 'purple']);
});

This would output http://yourapp.local/some/green/purple/testing

I prefer this approach rather than hardcoding url on different pages.

Route::get('foo/{param1}/bar/{param2}/show', array('as' => 'someRoute', 'uses' => 'SomeController@someMethod'))
    ->where(array(
        'param1' => '[a-zA-Z0-9-]+', 
        'param2' => '[a-zA-Z0-9-]+'
    ));

Controller:

public function someMethod($param1, $param2)
{       
    return $param1 . $param2;
}

// Assuming you passed params in controller

{{ route('someRoute') }}

// If not

{{ route('someRoute', ['param1' => 'test', 'param2' => 'routing']) }}

If parameters are not GET request parameters, but parts of the path at a midpoint (like exactly asked in a question), it is possible to generate url using Laravel's url() helper without using sprintf() at all:

url('foo', [333, 'bar', 444, 'show']);
// site.com/foo/333/bar/444/show

However, as pointed in other answers – named routes are preferable.