I am trying to write a program in PHP which I had already written in Java.
I had used the following statements to setup proxy in Java
System.setProperty("http.proxyHost",proxyhost);
System.setProperty("http.proxyPort",proxyport);
How do I do the same for PHP?
I think you may need to use the cURL extension to carry out the transfer and pass the relevant proxy options to cURL.
cURL Extension
curl_setopt function to pass options to a cURL session
The proxy options you need are: CURL_PROXY and CURL_PROXYPORT.