blocks|key|1437324|text|我记得，PHP解析单引号封装字符串的速度比双引号封装字符串快，因为它不需要花时间寻找需要解析的变量。这是真的吗？|type|blockquote|depth|inlineStyleRanges|entityRanges|data|1437325|不，这是错误的，见驳斥单引号性能神话(2012年1月；由Nikic)|unstyled|offset|length|1437326|我的主要问题是:在处理字符串和变量时(如上面的示例所示)，这两种封装方式是否都更好？|1437327|这只是一个品味问题，找到你的方向，不要被你在网上发现的误导和虚假信息分心。写好你可以阅读和编辑它的方式。|1437328|entityMap|0|LINK|mutability|MUTABLE|url|http://nikic.github.io/2012/01/09/Disproving-the-Single-Quotes-Performance-Myth.html^0|0|9|P|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@$E|U|F|V|1|W]]|A|$]]|$1|G|3|H|5|6|7|X|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Y|8|@]|9|@]|A|$]]|$1|K|3|-4|5|D|7|Z|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

<blockquote>
 I recall reading that PHP parses single quote encapsulated strings faster than double quoted encapsulated strings, because it is not spending time looking for variables that it needs to resolve. Is this true? 
</blockquote>

No, this is wrong, see <a href="http://nikic.github.io/2012/01/09/Disproving-the-Single-Quotes-Performance-Myth.html" rel="nofollow">Disproving the Single Quotes Performance Myth (Jan 2012; By Nikic)</a>

<blockquote>
 My main question is: When working with strings and variables, as in the above examples, is either way of encapsulating preferable?
</blockquote>

That is only a matter of taste, find your way and don't get distracted by misguiding and false information you find online. Write the way you can read and edit it well.

blocks|key|295342|text|以下是您可以参考的一些基准：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|295343|http://www.phpbench.com/|offset|length|295344|查找单引号与双引号部分。差别太小了，除非你要做无数次，否则就不会对性能产生任何影响。|295345|还有一种封装变量的方法，特别是在处理数组时：|295346|$str+=+"Encapsulating+an+array+{$array['key']}";|code-block|syntax|javascript|295347|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|O|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|F|3|G|5|6|7|10|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|11|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|12|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|C]]]]

Here's some benchmark that you can refer to:

<a href="http://www.phpbench.com/" rel="nofollow">http://www.phpbench.com/</a>

Look for the single quotes vs double quotes part. The difference is so small that unless you're going to do it a zillion times, there's not going to be a performance impact at all.

There is one more way you can encapsulate variables, useful especially when you're working with arrays:

<pre><code>$str = "Encapsulating an array {$array['key']}";
</code></pre>

blocks|key|2514112|text|在一般情况下使用'而不是"要快得多。这种差异是如此之小，尽管在大多数PHP应用程序中，您永远不会注意到这种差异。关于连接，两者的速度是相似的，两者之间的差别很小，请阅读下面的基准测试：https://stackoverflow.com/a/1813685/2859624|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2514113|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/1813685/2859624^0|8|1|C|1|Y|3|2K|17|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

It is very slightly faster to use <code>'</code> instead of <code>"</code> in general. This difference is so small though in most <code>PHP</code> applications you would never notice the difference. In regards to the concatenation, both are about similar speeds, there is very little difference between them, read benchmarks here: <a href="https://stackoverflow.com/a/1813685/2859624">https://stackoverflow.com/a/1813685/2859624</a>

blocks|key|1437408|text|虽然只有极小的时间差(例如，与服务器-客户端通信时间相比有些疏忽)，但有一种方法可以使文本更加清晰。后者使您更容易发现插入到文本中的变量。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1437409|我总是从常规文本中删除变量，就像你给出的例子2一样。|1437410|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Although there is only minimal time difference (Something that e.g., is negligable compared to server-client communication times), one way makes for a much clearer text. The latter makes it A LOT easier for you to spot variables inserted into text. 

I'd always take the variables out of regular text, as in example 2 you give.

This may be a very basic question, but I have struggled to find a suitable answer. And my first question, so please be gentle.

When combining strings with variables, I understand that enclosing variables within a single-quoted string will not expand the variable, whereas double quoted strings will expand the variable (and other special characters), giving rise to the syntax in the two examples:

<pre><code>$animal1='brown fox';
$animal2='lazy dog';
echo "The quick $animal1 jumps over the $animal2";
echo 'The quick '.$animal1.' jumps over the '.$animal2;
</code></pre>

I recall reading that PHP parses single quote encapsulated strings faster than double quoted encapsulated strings, because it is not spending time looking for variables that it needs to resolve. Is this true? If so, is this gain lost when concatenating a string and a variable, as in the second example?

My main question is: When working with strings and variables, as in the above examples, is either way of encapsulating preferable?

Methods of string encapsulation when using variables

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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这可能是一个非常基本的问题，但我一直在努力寻找一个合适的答案。还有我的第一个问题，所以请温柔一点。当将字符串与变量组合在一起时，我理解在单引号字符串中的包围变量不会扩展变量，而双引号字符串将扩展变量(和其他特殊字符)，这将导致以下两个示例中的语法：$animal1='brown fox';$animal2='lazy ...

问使用变量时字符串封装的方法
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