How can I send requests via HTTP Post to URL in php
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I have website that has page for donation. Merchants registered on the Gateway are to send transaction requests to GTPay via HTTP Post to URLhttps://ibank.gtbank.com/GTPay/Tranx.aspx

When I submit my request I see this page of the above URL displayed inside my donation page instead of taking me to the URL Below is my code:

$url ='https://ibank.gtbank.com/GTPay/Tranx.aspx';
$fields = array('gtpay_mert_id'=> urlencode($gtpay_mert_id),'gtpay_tranx_id&#03 9;=>...

How can I send requests via HTTP Post to URL in php

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