UPDATE i discovered it sends PDF if opened by adobe reader at my computer, but same pdf form sends FDF if opened in Chrome browser at website UPDATE END
i am using Acrobat XI Pro trial version
Adobe Acrobat offer forms in pdf documents, those forms can be submitted to server
submit button settings http://gyazo.com/0ff0dc17210f39f062a131c85265406c
my server code
<?php
ob_start();
$file = file_get_contents("php://input"); //Gets binary PDF Data
$time = microtime(true);
$newfile = "./customers/" . $time . ".pdf"; //Names file based on the time to the microsecond so nothing gets overwritten.
$worked = file_put_contents($newfile, $file); //Creates File
ob_end_clean();
?>
and i am getting FDF data instead, not PDF document