Form and HTTP Fetch in php
Php does not support multiple form control with the same name.
Even if it receive several values for the same name via a valid multipart-form-data, it will pass only the last value to the _POST global variable.
To resolve this issue at the php sauce, you need to:
Although HTML allows multiple values regardless of name, PHP doesn't, and this behaviour is well established. Closing won't fix.
The _POST 1) global variable is build by php when the body of the request has:
For other format, you need to build the _POST global variable yourself from the body available via the input stream.
Example with content-type set to Json
if ($_SERVER["CONTENT_TYPE"] === "application/json") {
$_POST = json_decode(file_get_contents('php://input'), true);
}