how to get the value of checksum in php header

Posted by sumit on Stack Overflow See other posts from Stack Overflow or by sumit
Published on 2010-06-16T17:36:28Z Indexed on 2010/06/16 17:52 UTC
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php

I have a header in php which contains a link like

<?php
header("Location: "."https://abc.com/ppp/purchase.do?version=3.0&".
    "merchant_id=<23255>&merchant_site_id<21312>&total_amount=<69.99>&".
    "currency=<USD>&item_name_1=<incidentsupporttier1>&item_amount_1=<1>&".
    "time_stamp=<2010-06-14.14:34:33>&**checksum=<calculated_checksum>**");
?>

when i run this page the value of checksum is calculated and the link is opened

now how checksum is calculated? calculated_checksum=md5(abc);

md5 is an algorithm which calculates the value of checksum based on certain values inside the bracket.

now i want to know how can i pass the value of checksum in the header url

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how to get the value of checksum in php header

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