PHP使用APC获取上传文件进度
今天发现使用PHP的APC也能获取上传文件的进度。这篇文章就说下如何做。
安装APC首先安装APC的方法和其他PHP模块的方法没什么两样，网上能找出好多
phpinfo可以看到APC的默认配置有:
apc.rfc1867看apc.rfc1867这个配置项：
http://cn2.php.net/manual/en/apc.configuration.php#ini.apc.rfc1867
文档说的是如果你上传文件的时候，在POST中带有APC_UPLOAD_PROGRESS字段，那么APC会自动以这个值创造一个upload_key缓存
这个时候，用户可以使用ajax再过来调用，就可以获取到当前文件上传的状态了
这个状态包括：
文件大小 当前已上传文件大小 文件上传速度（上传结束后才有） 实验： 1 开启rfc1867配置项apc.rfc1867=on
2 确认，phpinfo()中可以看到已经打开
apc.php<?phpif($_FILES['file']['error'] == UPLOAD_ERR_OK){ $path = '/tmp/upload/'; $path .= basename($_FILES['file']['name']); if(move_uploaded_file($_FILES['file']['tmp_name'], $path)){ // upload successful echo 'sucess'; }}确保能通过网络访问到页面
这里可以通过http://10.16.15.118:7702/apc.php 访问
4 服务端查看进度php代码getprocess.php<?phpprint_r(apc_fetch("upload_6226f7cbe59e99a90b5cef6f94f966fd"));确保能通过网络访问到页面
这里可以通过http://10.16.15.118:7702/getprocess.php 访问到
5 写个简单的客户端html<html><body><form enctype="multipart/form-data" method="POST" action="http://10.16.15.118:7702/apc.php"><input type="hidden" name="APC_UPLOAD_PROGRESS" value="6226f7cbe59e99a90b5cef6f94f966fd"/><input type="file" name="file" /><input type="submit" value="submit" /></form></body></html>
这里要注意的是，APC_UPLOAD_PROCESS 必须要放在上传的file之前（这也是文档中有写到的），否则会出现warning，并且也无法得到process
6 上传文件访问apc.php 7 查看getprocess.php 下面的疑问就是是不是真有中间过渡状态呢？ 1 找个大文件，（20M+） 2 确认下nginx+php对文件大小限制超过20M 3 开启fidder做限速：按照这篇文章说的：http://donchevp.blogspot.com/2009/11/limiting-your-internet-connection-speed.html
设置rule - customer - 设置这一段代码
if (m_SimulateModem) { // Delay sends by 300ms per KB uploaded. oSession["request-trickle-delay"] = "1"; // Delay receives by 150ms per KB downloaded. oSession["response-trickle-delay"] = "150"; }修改这个request-trickle-delay
然后开启Simulate模式。
4 a.html页面上传这个20M文件 5 不断刷新getprocess.php可以看到current的进度，而且可以看到没有上传完成的时候，rate字段是没有的~~~so good~~
参考文章：http://www.phppan.com/2012/04/php-upload-progress/
http://donchevp.blogspot.com/2009/11/limiting-your-internet-connection-speed.html
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