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Ajax ve PHP ile yapılmış dosya upload örneği ;

#5592

2011-04-29 23:06 GMT

Kaan

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Ajax ve PHP ile yap?lm?? dosya upload ?rne?i ;

tml]<html>

<body>

<script>

var url = "post.php";

var binary;

var filename;

var mytext;

function upload() {

filename = document.getElementById('myfile').value;

mytext = document.getElementById('mytext').value;

document.getElementById('ajaxbutton').disabled = true;

// request local file read permission

try {

netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");

} catch (e) {

alert("Permission to read file was denied.");

}

// open the local file

var file = Components.classes["@mozilla.org/file/local;1"]

.createInstance(Components.interfaces.nsILocalFile);

file.initWithPath( filename );

stream = Components.classes["@mozilla.org/network/file-input-stream;1"]

.createInstance(Components.interfaces.nsIFileInputStream);

stream.init(file, 0x01, 00004, null);

var bstream = Components.classes["@mozilla.org/network/buffered-input-stream;1"]

.getService();

bstream.QueryInterface(Components.interfaces.nsIBufferedInputStream);

bstream.init(stream, 1000);

bstream.QueryInterface(Components.interfaces.nsIInputStream);

binary = Components.classes["@mozilla.org/binaryinputstream;1"]

.createInstance(Components.interfaces.nsIBinaryInputStream);

binary.setInputStream (stream);

// start AJAX file upload in 1 second

window.setTimeout("ajax_upload()", 1000);

}

function ajax_upload() {

// request more permissions

try {

netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");

} catch (e) {

alert("Permission to read file was denied.");

}

http_request = false;

http_request = new XMLHttpRequest();

if (!http_request) {

alert('Cannot create XMLHTTP instance');

return false;

}

// prepare the MIME POST data

var boundaryString = 'capitano';

var boundary = '--' + boundaryString;

var requestbody = boundary + '\n'

+ 'Content-Disposition: form-data; name="mytext"' + '\n'

+ '\n'

+ mytext + '\n'

+ '\n'

+ boundary + '\n'

+ 'Content-Disposition: form-data; name="myfile"; filename="'

+ filename + '"' + '\n'

+ 'Content-Type: application/octet-stream' + '\n'

+ '\n'

+ escape(binary.readBytes(binary.available()))

+ '\n'

+ boundary;

document.getElementById('sizespan').innerHTML =

"requestbody.length=" + requestbody.length;

// do the AJAX request

http_request.onreadystatechange = requestdone;

http_request.open('POST', url, true);

http_request.setRequestHeader("Content-type", "multipart/form-data; \

boundary=\"" + boundaryString + "\"");

http_request.setRequestHeader("Connection", "close");

http_request.setRequestHeader("Content-length", requestbody.length);

http_request.send(requestbody);

}

function requestdone() {

if (http_request.readyState == 4) {

if (http_request.status == 200) {

result = http_request.responseText;

document.getElementById('myspan').innerHTML = result;

} else {

alert('There was a problem with the request.');

}

document.getElementById('ajaxbutton').disabled = false;

}

}

</script>

<form>

Text: <input type="text" id="mytext" name="mytext" size="40">

<br>

File: <input type="file" id="myfile" name="datafile" size="40"><br>

<input type="button" id="ajaxbutton" value="AJAX IT" onclick="upload();">

</form>

<div id="sizespan"></div>

<hr>

<div id="myspan"></div>

</body>

</html>

post.php

hp]<?

print_r($_FILES);

?>

<hr>

<?

print_r($_POST);

$fpath = "/tmp/";

// move (actually just rename) the temporary file to the real name

move_uploaded_file ( $_FILES{myfile}{tmp_name}, $fpath.$_FILES{myfile}{name} );

// convert the uploaded file back to binary

// javascript "escape" does not encode the plus sign "+", but "urldecode"

// in PHP make a space " ". So replace any "+" in the file with %2B first

$filename = $fpath.$_FILES{myfile}{name};

$handle = fopen($filename, "r");

$contents = fread($handle, filesize($filename));

fclose($handle);

$contents = preg_replace("/\+/", "%2B", $contents);

$handle = fopen($filename, "w");

fwrite($handle, urldecode($contents));

fclose($handle);

?>

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