Description:
------------
Get all headers returns blank with PHP7.0, PHP7.1 and PHP7.2. This bug was previously reported, Bug #62596, however only fixed in PHP7.3.

<?php

foreach (getallheaders() as $name => $value) {
    echo "$name: $value\n";
}

?>

Test script:
---------------
<?php

foreach (getallheaders() as $name => $value) {
    echo "$name: $value\n";
}

?>

Expected result:
----------------
My-Header: Host: restorevk.trial.co.za User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-ZA,en-GB;q=0.8,en-US;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate Connection: keep-alive Upgrade-Insecure-Requests: 1 Cache-Control: max-age=0