他们可以教孩子几个简单的规则，以保证孩子的安全。
And they can teach them several simple rules to keep them safe.
在本系列文章的第1部分中，我讨论了一些基本的PHP设计规则，并介绍了如何编写安全、简单、与平台无关且快速的代码。
In Part 1 of this series, I discussed some basic PHP design rules and covered how to write secure, simple, platform-independent, speedy code.
所以要保护自己的生命安全，需要大家遵守最起码、最简单的规则和秩序。
Therefore want to protect their own safety, we comply with the minimum required, the most simple rules and order.
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