php上传进度条。之前做了上传了，正常上传。现在要做进度条。
php上传进度条。之前做了上传了，正常上传。现在要做进度条。怎么做？不要做假的，要真实的
回复讨论(解决方案)
PHP 5.4中的新特性
2.1.5. Upload progress 文件上传
Session提供了上传进度支持，通过$_SESSION["upload_progress_name"]就可以获得当前文件上传的进度信息，结合Ajax就能很容易实现上传进度条了。
http://www.laruence.com/2011/10/10/2217.html
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