Witam,
Znalazłem taki skrypt

[HTML] pobierz, plaintext 
<script>
function _(el){
	return document.getElementById(el);
}
function uploadFile(){
	var file = _("file1").files[0];
	var formdata = new FormData();
	formdata.append("file1", file);
	var ajax = new XMLHttpRequest();
	ajax.upload.addEventListener("progress", progressHandler, false);
	ajax.addEventListener("load", completeHandler, false);
	ajax.addEventListener("error", errorHandler, false);
	ajax.addEventListener("abort", abortHandler, false);
	ajax.open("POST", "file_upload_parser.php");
	ajax.send(formdata);
}
function progressHandler(event){
	_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
	var percent = (event.loaded / event.total) * 100;
	_("progressBar").value = Math.round(percent);
	_("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
}
function completeHandler(event){
	_("status").innerHTML = event.target.responseText;
	_("progressBar").value = 0;
}
function errorHandler(event){
	_("status").innerHTML = "Upload Failed";
}
function abortHandler(event){
	_("status").innerHTML = "Upload Aborted";
}
</script>
[HTML] pobierz, plaintext 

ale chciałbym, żeby do pliku file_upload_parser.php przesyłało też tekst wpisany w inpucie.
Da się to zrobić?

https://developer.mozilla.org/en/docs/Web/API/FormData
Musisz poprostu zrobic set() na formdata. Przenosze boto nie ma zadnego zwiazku z php