php会在没有警告的情况下运行得更快吗? [英] Does php run faster without warnings?

问题描述

由于PHP代码即使在警告和注意未定义索引和非静态方法被称为静态等问题的情况下也能正常运行，所以问题是，如果我花时间删除我的所有注意事项和警告，代码会以更快的速度运行吗?

Since PHP code will run just fine even if it's riddled with warnings and notices about undefined indexes and non-static methods being called as static, etc, the question is, if I spend the time to remove ALL notices and warnings from my code will it run significantly faster?

推荐答案

我收藏了一篇文章，其中作者为此做了一些基准测试；不幸的是，它是法语的...但是这里是(也许您会理解其中的某些部分):

I bookmarked an article in which the author did some benchmarks about that ; unfortunatly, it's in french... but here it is (maybe you'll understand some parts of it) : Ne faites pas d'erreur

以下是数字，以帮助不懂法语的人:

And here are the numbers, to help people who don't read french :

• 10k通知，启用了error_reporting和display_errors:5,162.76 ms
• 相同，但禁用了display_errors:136.18 ms
• 相同，但也禁用了error_reporting:117.79 ms
• 最后，在修补代码之后，它不再发出任何通知:19.51 ms

• 10k notices, with error_reporting and display_errors enabled : 5,162.76 ms
• same, but with display_errors disabled : 136.18 ms
• same, but with error_reporting disabled too : 117.79 ms
• and, finally, after patching the code so it doesn't produce any notice anymore : 19.51 ms

这意味着，是的，即使未显示或未报告通知/警告/错误，PHP代码也可以更快地运行.

Which means that, yes, PHP code runs faster without notices/warnings/errors, even when those are not displayed nor reported.

Derick Rethans在本文中说了同样的话:应避免使用闭门运算符(@)的五个原因 (引用):

Derick Rethans says the same thing in this article : Five reasons why the shut-op operator (@) should be avoided (quoting) :

原因3:速度很慢(第2部分)

每当PHP产生错误时 内部消息，它被处理， 一直格式化到完全 格式化的消息可以是 直接输出到浏览器.
仅在显示之前 error_reporting设置被检查. 但是，这与 @-运算符.
错误 消息始终是完全格式化的 在检查error_reporting之前-或 display_errors.

Whenever PHP generates an error message internally, it's processed and formatted all the way up to the fully formatted message that can be outputted straight to the browser.
Only just before it is displayed the error_reporting setting is checked. This however, is not related to the @-operator exclusively.
The error message is just always fully formatted before error_reporting is checked—or display_errors for that matter.

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