php开发问题

the dreaded quot;Warning: imagecreatefromjpeg() : #39;/tmp/filename#39; is not a valid JPEG file in /phpfile.php on line xxxquot;(可怕的“警告:imagecreatefromjpeg() : /tmp/filename 不是第 xxx 行/phpfile.php 中的有效 JPEG 文件) - IT屋-程序员
PHP Ajax Upload Progress Bar(PHP Ajax 上传进度条)
Putting default value in lt;input type=file....gt;(将默认值放入 lt;input type=file....gt;)
PHP see only 20 uploading files at a time(PHP 一次只能看到 20 个上传文件)
overriding upload_max_filesize(覆盖 upload_max_filesize)
Ajax file upload(Ajax 文件上传)
Max file number can php upload at same time(最大文件数可以同时php上传)
How to test if a user has SELECTED a file to upload?(如何测试用户是否选择了要上传的文件?)
Convert JPG/GIF image to PNG in PHP?(在 PHP 中将 JPG/GIF 图像转换为 PNG?)
Very large uploads with PHP(使用 PHP 进行非常大的上传)
PHP Upload, extract and progressbar(PHP 上传、解压和进度条)
Upload 1GB files using chunking in PHP(在 PHP 中使用分块上传 1GB 文件)