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Homephp教程php手册php上传图片失败原图

php上传图片失败原图

Jun 13, 2016 am 09:53 AM
phpgenerallyuploadpicturefaildocumentofwantovertake

php上传图片失败原图

一般的文件上传,除非文件很小.就像一个5M的文件,很可能要超过一分钟才能上传完.
但在php中,默认的该页最久执行时间为 30 秒.就是说超过30秒,该脚本就停止执行.
这就导致出现 无法打开网页的情况.这时我们可以修改 max_execution_time

在php.ini里查找
max_execution_time
默认是30秒.改为
max_execution_time = 0
0表示没有限制

另一种方法是可以在php程序中加入
set_time_limit();
来设定页面最久执行时间.
set_time_limit(0);//0表示没有限制

2. 修改 post_max_size 设定 POST 数据所允许的最大大小。此设定也影响到文件上传。
php默认的post_max_size 为2M.如果 POST 数据尺寸大于 post_max_size $_POST 和 $_FILES superglobals 便会为空.
查找 post_max_size .改为
post_max_size = 150M

3. 很多人都会改了第二步.但上传文件时最大仍然为 8M.
为什么呢.我们还要改一个参数upload_max_filesize 表示所上传的文件的最大大小。
查找upload_max_filesize,默认为8M改为
upload_max_filesize = 100M

另外要说明的是,post_max_size 大于 upload_max_filesize 为佳.

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