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php $_FILES获取文件大小问题

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Jun 23, 2016 pm 01:55 PM

filesphpsizedocumentObtain

为什么我用$_FILES这个获取上传的文件大小时超过2MB 就无法获取文件的大小呢
小于2MB时是可以获取的
难道跟php.ini里的设置有关吗

回复讨论(解决方案)

跟php.ini里的设置有关

上传文件最大限制upload_max_filesize

有啊，upload_max_filesize 改大点改成100M

upload_max_filesize 改成100M

超过php.ini设置的大小的话，不仅是$_FILES连 $_POST $_GET之类的全部失效

当然有关啊！你可以设置一下，或者可以查看一下错误信息，就知道为什么看不到上传的文件了，建议将$_FILES，var_dump出来！

上传文件最大限制upload_max_filesize

里面设置上传文件的最大值

先检查$_FILES['error'],非0就是有错误，
1 文件大小超出了服务器限制
2 要上传的文件大小超出浏览器限制
3 文件仅部分被上传
4 没有找到要上传的文件
5 服务器临时文件夹丢失
6 文件写入到临时文件夹出错

upload_max_filesize 默认限制2Mb

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