If we were to take the strict position of "never break existing code," we would be forced to reject this useful new feature.

如果我们有严格地立场，“从不破坏现有代码”，那么我们将被迫拒绝这项有用的新功能。

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This means that a variable may reject attempts to set its value to something malicious or simply nonsensical by referring to a regular expression (or even a piece of code).

这意味着通过引用正则表达式(或者甚至是一段代码)，变量会拒绝将其值设置为某些恶意的值或完全无意义值的尝试。

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And you can reject PHP code in content, addressing a long-standing vulnerability.

还可以在内容中排斥php代码，以解决长期存在的安全隐患。

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