January 2021
Intermediate to advanced
505 pages
9h 45m
Chinese
Content preview from PHP编程：第4版
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330
｜
第
14
章
安全
●
确保对所有你从远程数据源接收的数据进行过滤，这样它们才会是期望的数据。
记住，你的过滤逻辑越严格，你的程序越安全。
●
用上下文情景的方式转义输出，以确保你的数据不被远程系统错误解释。
●
总是初始化你的变量。当
register_globals
指令开启的时候这非常重要。
●
禁用
register_globals
、
magic_quote_gpc
和
allow_url_fopen
。参考
PHP
官方
网站了解这些指令的详细内容。
●
只要构建文件名，就用
basename()
和
realpath()
检查其组成。
●
把包含文件存储到文件根目录外面。包含文件最好不用
.inc
作为扩展名，而用
.php
作为扩展名，
或其他不明显的扩展名。
●
当用户权限变更时总是调用
session_regenerate_id()
。
●
只要构成的文件名有用户提供的成分，就要用
basename()
和
realpath()
检查文
件名的组成。
●
不要先创建文件再修改它的权限。使用
umask()
可使文件用正确的权限创建。
●
不要在
eval()
和带
/e
选项的
preg_replace()
或任何系统命令
—
exec()
、
system()
、
popen()
、
passthru()
和反引号（
`
）操作符
—
中使用“用户提供”
的数据。
下一步
对于这些潜在的漏洞，你可能想知道到底为什么要做这种“
Web
开发工作”。几乎每天
都有银行和投资公司的网络安全漏洞造成大量数据丢失和身份盗窃的报告。至少，如果
你想成为一名优秀的
Web
开发人员，必须始终关注安全性，并牢记安全性是一个不断变 ...
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and much more.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.