You can use the curl_* functions for this. Here's an article that shows you exactly what you'd need to do in PHP: https://davidwalsh.name/curl-post
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.