PHP上传文件大小限制修改

2. file_uploads = On ;打开文件上传选项
3. upload_max_filesize = 500M ;上传文件上限

如果要上传比较大的文件，仅仅以上两条还不够，还需要把服务器缓存上限调大，把脚本最大执行时间变长。

如下：

2. post_max_size = 500M ;post上限
3. max_execution_time = 1800 ; Maximum execution time of each script, in seconds脚本最大执行时间
4. max_input_time = 1800 ; Maximum amount of time each script may spend parsing request data
5. memory_limit = 128M ; Maximum amount of memory a script may consume (128MB)内存上限