重定向到外部URL但发送自定义POST参数

i am trying to make a script that redirects to a site, for example paypal or coinbase, however these require post parameters, most of the time i send those with a form, however i am looking for a method that allows me to send post parameters directly from the controller and redirect the user to the external site.

I am running symfony2, and i don't wanna use forms, i have been trying to find such example online but i can't find any.

If any code is required, please don't hesitate to ask but right now i don't have a clue on how to do such.

I am new to REST apis and it's giving me quite a bit of troubles.

There is no way to include POST data in a redirect from PHP / symfony2.

A workaround could be using client-side JavaScript to post directly to the desired target location.

Another solution could be sending the POST request to the external API using curl in your controller and forwarding the API's response to the client.