|
首页>编程技术>p2p> |
基于PHP的AJAX技术实现文件异步上传 |
|
Visited times , Welcome to Data Mining Forum & Data Mining Expert & Data Mining Tools |
|
|
|
源代码
＜?php
$upload_dir = "/var/www/anyexample/aeu"; // 文件存储的路径
$web_upload_dir = "/aeu"; // 文件在Web目录下的路径
$tf = $upload_dir."/".md5(rand()).".test";
$f = @fopen($tf, "w");
if ($f == false)
die("Fatal error! {$upload_dir} is not writable. Set "chmod 777 {$upload_dir}"
or something like this");
fclose($f);
unlink($tf);
//处理上传的文件
if (isset($_POST["fileframe"]))
{
$result = "ERROR";
$result_msg = "No FILE field found";
if (isset($_FILES["file"])) // 从浏览器接受文件
{
if ($_FILES["file"]["error"] == UPLOAD_ERR_OK) // 没有错误
{
$filename = $_FILES["file"]["name"]; // 文件名 数据挖掘研究院
move_uploaded_file($_FILES["file"]["tmp_name"], $upload_dir."/".$filename);
// 处理的主过程-转移文件到 $upload_dir
$result = "OK";
}
elseif ($_FILES["file"]["error"] == UPLOAD_ERR_INI_SIZE)
$result_msg = "The uploaded file exceeds the upload_max_filesize directive in php.ini";
else
$result_msg = "Unknown error";
}
echo "＜html＞＜head＞＜title＞-＜/title＞＜/head＞＜body＞";
echo "＜script language="JavaScript" type="text/javascript"＞"."
";
echo "var parDoc = window.parent.document;";
"
if ($result == "OK")
{
echo "parDoc.getElementById("upload_status").value = "file successfully uploaded";";
echo "parDoc.getElementById("filename").value = "".$filename."";";
echo "parDoc.getElementById("filenamei").value = "".$filename."";";
echo "parDoc.getElementById("upload_button").disabled = false;";
}
else
{
echo "parDoc.getElementById("upload_status").value = "ERROR: ".$result_msg."";";
}
echo "
"."＜/script＞＜/body＞＜/html＞";
exit();
}
function safehtml($s)
{
$s=str_replace("&", "&", $s);
$s=str_replace("＜", "<", $s);
$s=str_replace("＞", ">", $s);
$s=str_replace(""", "'", $s);
$s=str_replace(""", """, $s);
return $s;
}
if (isset($_POST["description"]))
{
$filename = $_POST["filename"];
$size = filesize($upload_dir."/".$filename); 数据挖掘工具
$date = date("r", filemtime($upload_dir."/".$filename));
$description = safehtml($_POST["description"]);
$html =＜＜＜END
＜html＞＜head＞＜title＞{$filename} [uploaded by IFRAME Async file uploader]＜/title＞＜/head＞
＜body＞
＜h1＞{$filename}＜/h1＞
＜p＞This is a file information page for your uploaded file. Bookmark it, or send to anyone...＜/p＞
＜p＞Date: {$date}＜/p＞
＜p＞Size: {$size} bytes＜/p＞
＜p＞Description:
＜pre＞{$description}＜/pre＞
＜/p＞
＜p＞＜a href="{$web_upload_dir}/{$filename}" style="font-size: large;"＞download file＜/a＞＜br＞
＜a href="{$PHP_SELF}" style="font-size: small;"＞back to file uploading＜/a＞＜br＞
＜a href="{$web_upload_dir}/upload-log.html" style="font-size: small;"＞upload-log＜/a＞＜/p＞
＜br＞＜br＞Example by ＜a href="http://www.anyexample.com/"＞AnyExample＜/a＞ 数据挖掘实验室
＜/body＞＜/html＞
END;
$f = fopen($upload_dir."/".$filename."-desc.html", "w");
fwrite($f, $html);
fclose($f);
$msg = "File {$filename} uploaded,
＜a href="{$web_upload_dir}/{$filename}-desc.html"＞see file information page＜/a＞";
$f = fopen($upload_dir."/upload-log.html", "a");
fwrite($f, "＜p＞$msg＜/p＞
");
fclose($f);
setcookie("msg", $msg);
header("Location: http://".$_SERVER["HTTP_HOST"].$PHP_SELF);
exit();
}
if (isset($_COOKIE["msg"]) && $_COOKIE["msg"] != "")
{
if (get_magic_quotes_gpc())
$msg = stripslashes($_COOKIE["msg"]);
else
$msg = $_COOKIE["msg"];
setcookie("msg", "");
}
?＞
＜!-- Beginning of main page --＞
＜html＞＜head＞ 数据挖掘交友
＜title＞IFRAME Async file uploader example＜/title＞
＜/head＞
＜body＞
＜?php
if (isset($msg))
echo "＜p style="font-weight: bold;"＞".$msg."＜/p＞";
?＞
＜h1＞Upload file:＜/h1＞
＜p＞File will begin to upload just after selection. ＜/p＞
＜p＞You may write file description, while you file is being uploaded.＜/p＞
＜form action="＜?=$PHP_SELF?＞" target="upload_iframe" method="post" enctype="multipart/form-data"＞
＜input type="hidden" name="fileframe" value="true"＞
＜!-- Target of the form is set to hidden iframe --＞
＜!-- From will send its post data to fileframe section of this PHP script (see above) --＞
＜label for="file"＞text file uploader:＜/label＞＜br＞
＜!-- JavaScript is called by OnChange attribute --＞
＜input type="file" name="file" id="file" onChange="jsUpload(this)"＞ 数据挖掘论坛
＜/form＞
＜script type="text/javascript"＞
/* This function is called when user selects file in file dialog */
function jsUpload(upload_field)
{
// this is just an example of checking file extensions
// if you do not need extension checking, remove
// everything down to line
// upload_field.form.submit();
var re_text = /.txt|.xml|.zip/i;
var filename = upload_field.value;
/* Checking file type */
if (filename.search(re_text) == -1)
{
alert("File does not have text(txt, xml, zip) extension");
upload_field.form.reset();
return false;
}
upload_field.form.submit();
document.getElementById("upload_status").value = "uploading file...";
upload_field.disabled = true;
return true;
}
＜/script＞
＜iframe name="upload_iframe" style="width: 400px; height: 100px; display: none;"＞ 数据挖掘论坛
＜/iframe＞
＜!-- For debugging purposes, it"s often useful to remove
"display: none" from style="" attribute --＞
＜br＞
Upload status:＜br＞
＜input type="text" name="upload_status" id="upload_status"
value="not uploaded" size="64" disabled＞
＜br＞＜br＞
File name:＜br＞
＜input type="text" name="filenamei" id="filenamei" value="none" disabled＞
＜form action="＜?=$PHP_SELF?＞" method="POST"＞
＜!-- one field is "disabled" for displaying-only. Other, hidden one is for sending data --＞
＜input type="hidden" name="filename" id="filename"＞
＜br＞＜br＞
＜label for="photo"＞File description:＜/label＞＜br＞
＜textarea rows="5" cols="50" name="description"＞＜/textarea＞
＜br＞＜br＞ 数据挖掘研究院
＜input type="submit" id="upload_button" value="save file" disabled＞
＜/form＞
＜br＞＜br＞
＜a href="＜?=$web_upload_dir?＞/upload-log.html"＞upload-log＜/a＞
＜br＞＜br＞＜br＞
Example by ＜a href="http://www.anyexample.com/"＞AnyExample＜/a＞
＜/body＞
＜/html＞ |
以上的讲解就是提供一种思路供大家参考。大家也可以根据自己的需求进行相应的优化。
数据挖掘论坛
|
|
|
|
|
[数据挖掘专家]
[数据挖掘研究院]
[数据挖掘论坛]
[数据挖掘实验室]
|
上一篇：在PHP中全面阻止SQL注入式攻击之一
下一篇：基于PHP的AJAX技术实现文件异步上传
|
|
|
|
