Pear HTTP_Upload文件上传库
Pear的HTTP_Upload类库提供了一个封装好的html表单文件上传处理程序，使用Pear的error系统。
特点
能一次处理多个文件的上传
容易校验文件的上传状态，限制不期望的文件上传
多语种的报错提示信息（还没有中文，不过可以扩展)
单个文件上传的例子
index.htm
PLAIN TEXTCODE: <form action="./files.php" enctype="multipart/form-data">File 1: <input type="file" name="userfile"><br><input type="submit" name="submit" value="Upload!"></form>files.php
PLAIN TEXTPHP: <?phprequire ‘HTTP/Upload.php‘;$upload = new HTTP_Upload(‘es‘);// Language for error messages$file = $upload->getFiles(‘userfile‘);// return a file object or errorif (PEAR::isError($file)) { die ($file->getMessage());}// Check if the file is a valid uploadif ($file->isValid()) { // this method will return the name of the file you moved, // useful for example to save the name in a database $file_name = $file->moveTo(‘./uploads_dir/‘); if (PEAR::isError($file_name)) { die ($file_name->getMessage()); }}?>多文件上传的例子
PLAIN TEXTCODE: <form action="files.php" enctype="multipart/form-data">Image 1: <input type="file" name="userfile[]"><br>Image 2: <input type="file" name="userfile[]"><br>Image 3: <input type="file" name="userfile[]"><br><input type="submit" name="sub" value="Upload!"></form>PLAIN TEXTPHP: <?php$files = $upload->getFiles(); // returns an array of file objects or errorforeach ($files as $file) { if ($file->isValid()) { ... }}?>