利用discuz实现PHP大文件上传应用实例代码_php技巧
对于确实需要改善论坛附件上传条件的朋友可以尝试将上面提及的参数在php.ini进行设置，以适应大文件上传的需要。同时别忘记在论坛的后台相应做附件限制的地方进行设置。
论坛主要有2个地方可以对附件上传的大小进行限制，级别从高到低依次为：
- 帖子相关---附件类型尺寸
- 用户组---附件相关
同时，下面提供一个配置指导，来源一些成功通过http上传大附件的朋友的提供，当然，由于大家的服务器配置情况以及网络情况不同，并不一定适用你的情况，可能很多地方需要参照修改：
打开php.ini，
| 参数 | 设置 | 说明 |
| file_uploads | on | 是否允许通过HTTP上传文件的开关。默认为ON即是开 |
| upload_tmp_dir | -- | 文件上传至服务器上存储临时文件的地方，如果没指定就会用系统默认的临时文件夹 |
| upload_max_filesize | 8m | 望文生意，即允许上传文件大小的最大值。默认为2M |
| post_max_size | 8m | 指通过表单POST给PHP的所能接收的最大值，包括表单里的所有值。默认为8M |
| 说明 | ||
| 一般地，设置好上述四个参数后，在网络正常的情况下，上传 | ||
| 但如果要上传>8M的大体积文件，只设置上述四项还一定能行的通。除非你的网络真有100M/S的上传高速，否则你还得继续设置下面的参数。 | ||
| max_execution_time | 600 | 每个PHP页面运行的最大时间值(秒)，默认30秒 |
| max_input_time | 600 | 每个PHP页面接收数据所需的最大时间，默认60秒 |
| memory_limit | 8m | 每个PHP页面所吃掉的最大内存，默认8M |
把上述参数修改后，在网络所允许的正常情况下，就可以上传大体积文件了
- Warning: Unable to open '\\php2' for reading: Invalid argument in e:\user\web\larksoft.net\upload\upfile.php on line 10
是php的upload_tmp_dir的原因，所指定的目录必须可读可写
- Parse error: parse error in c:\program files\apache group\apache\htdocs\mdweb\ftpfile\upload.php on line 14
Parse error一般都是语句的问题，比如象“；”，“'”，“）”等等的匹配问题 。
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