错误码：
0 | UPLOAD_ERR_OK | 文件成功上传 1 | UPLOAD_ERR_INI_SIZE | Size exceeds upload_max_filesize in php.ini. 2 | UPLOAD_ERR_FORM_SIZE | Size exceeds MAX_FILE_SIZE specified in HTML form. 3 | UPLOAD_ERR_PARTIAL | 文件没有完整上传 4 | UPLOAD_ERR_NO_FILE | 没有上传文件 5 | UPLOAD_ERROR_E | As expliained by @Progman, removed in rev. 81792 6 | UPLOAD_ERR_NO_TMP_DIR | 找不到临时文件夹 7 | UPLOAD_ERR_CANT_WRITE | 磁盘不可写 8 | UPLOAD_ERR_EXTENSION | File upload stopped by extension.
index.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <title></title> </head> <body> <form action="upload.php" method="post" enctype="multipart/form-data"> <input type="hidden" name="MAX_FILE_SIZE" value="1000000"> 选择文件：<input type="file" name="myfile"> <input type="submit" value="上传文件"> </form> </body> </html>
upload.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<title></title>
</head>
<body>
<?php
if($_FILES['myfile']['error'] > 0) { //判断文件是否可以成功上传到服务器，0表示上传成功
echo 'Error: ';
switch ( $_FILES['myfile']['error'] ) {
case UPLOAD_ERR_OK:
$response = 'There is no error, the file uploaded with success.';
break;
case UPLOAD_ERR_INI_SIZE:
$response = 'The uploaded file exceeds the upload_max_filesize directive in php.ini.';
break;
case UPLOAD_ERR_FORM_SIZE:
$response = 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.';
break;
case UPLOAD_ERR_PARTIAL:
$response = 'The uploaded file was only partially uploaded.';
break;
case UPLOAD_ERR_NO_FILE:
$response = 'No file was uploaded.';
break;
case UPLOAD_ERR_NO_TMP_DIR:
$response = 'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3.';
break;
case UPLOAD_ERR_CANT_WRITE:
$response = 'Failed to write file to disk. Introduced in PHP 5.1.0.';
break;
case UPLOAD_ERR_EXTENSION:
$response = 'File upload stopped by extension. Introduced in PHP 5.2.0.';
break;
default:
$response = 'Unknown error';
break;
}
echo $response;
exit; //如果$_FILES['myfile']['error']大于0都是有错误，输出错误信息并退出程序
}
//获取上传文件的MIME类型中的主类型和子类型
list($maintype,$subtype)=explode("/",$_FILES['myfile']['type']);
if ($maintype=="text") { //通过主类型限制不能上传文本文件，例如.txt .html .php等文件文件
echo '问题: 不能上传文本文件。';
exit; //如果用户上传文本文件则退出程序
}
$upfile = './uploads/'.time().$_FILES['myfile']['name']; //定义上传后的位置和新文件名
if ( is_uploaded_file($_FILES['myfile']['tmp_name']) ) { //判断是否为上传文件
if ( !move_uploaded_file($_FILES['myfile']['tmp_name'], $upfile) ) { //从移动文件
echo '问题: 不能将文件移动到指定目录。';
exit;
}
}else{
echo '问题: 上传文件不是一个合法文件: ';
echo $_FILES['myfile']['name'];
exit;
}
echo '文件 : '.$upfile.' 上传成功, 大小为 : ' .$_FILES['myfile']['size'].'！<br>'; //如果文件上传成功则输出
?>
</body>
</html>
＜完。转自：http://summerbluet.com/642＞
