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突破PHP下传文件大小限制的方法介绍

Jun 13, 2016 pm 12:51 PM
filesize max php post size

突破PHP上传文件大小限制的方法介绍
PHP上传文件默认一般都是有限制的,如何修改PHP上传限制的大小呢?

1. 一般的php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
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默认是30秒.改为
max_execution_time = 0
0表示没有限制
以上修改的是php上传文件中脚本执行超时时间

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php上传文件。
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
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3. 修改了第二步,但php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
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另外要说明的是在php文件上传中,post_max_size 大于 upload_max_filesize 为佳.
对php文件上传有所需求的朋友可以参考下以上的设置!

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