PHP 7.1更新：性能比语法更重要
随着 PHP 7.0 对速度进行大幅度提高之后，7.1版本继续优化了在网页服务器方面的性能。
具体的特性还没有明确，但是性能方面仍然有提升的空间，领导开发PHP引擎的Zend的CTO Zeev Suraski说，“虽然这一版本的性能没有7.0那样有飞跃性的突破，但是我们还是把精力放在了性能上。”
Zuaraski说，在语法层面的RFCs（Request for Comments）也有很多，但是哪些能被接受还不确定。
PHP 7.1 中的特性包括：空类型；使用单个catch语句捕获多个异常；HTTP/2 server推送的支持；void返回类型，不返回任何值；支持对字符串的负便宜操作。7.1版本还会对不合法的算术字符串输入做出警告，以及一系列对输入的验证。
“从根本上讲，我觉得人们对性能的关心要远大于新的语法。”Zuraski说，“PHP是一个成熟的语言，这也就解释了为什么PHP 5.X普及的这么慢，而以性能著称的PHP 7普及的这么快的原因。”
虽然暂定的7.1版本可能在11月发布，但是正式的发布可能要等到2018年。Suraski说。
技术人的百科全书： PHP知识图谱
原文： PHP 7.1 update puts speed before syntax 作者： Paul Krill 译者： 赖信涛 责编： 钱曙光
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