php PHP在<<<EOF字符串中使用Gettext
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PHP using Gettext inside <<<EOF string
提问by FFish
I use PHP's EOF string to format HTML content without the hassle of having to escape quotes etc. How can I use the function inside this string?
我使用 PHP 的 EOF 字符串来格式化 HTML 内容，而无需转义引号等。如何使用该字符串中的函数？
<?php
$str = <<<EOF
<p>Hello</p>
<p><?= _("World"); ?></p>
EOF;
echo $str;
?>
回答by Pekka
As far as I can see in the manual, it is not possible to call functions inside HEREDOC strings. A cumbersome way would be to prepare the words beforehand:
据我在手册中看到的，不可能在 HEREDOC 字符串中调用函数。一个麻烦的方法是事先准备好单词：
<?php
$world = _("World");
$str = <<<EOF
<p>Hello</p>
<p>$world</p>
EOF;
echo $str;
?>
a workaround idea that comes to mind is building a class with a magic getter method.
想到的一个变通办法是用魔法 getter 方法构建一个类。
You would declare a class like this:
你会声明一个这样的类：
class Translator
{
public function __get($name) {
return _($name); // Does the gettext lookup
}
}
Initialize an object of the class at some point:
在某个时刻初始化类的对象：
$translate = new Translator();
You can then use the following syntax to do a gettext lookup inside a HEREDOC block:
然后，您可以使用以下语法在 HEREDOC 块内执行 gettext 查找：
$str = <<<EOF
<p>Hello</p>
<p>{$translate->World}</p>
EOF;
echo $str;
?>
$translate->Worldwill automatically be translated to the gettext lookup thanks to the magic getter method.
$translate->World由于魔法 getter 方法，将自动转换为 gettext 查找。
To use this method for words with spaces or special characters (e.g. a gettext entry named Hello World!!!!!!, you will have to use the following notation:
要将此方法用于带有空格或特殊字符的单词（例如名为 的 gettext 条目Hello World!!!!!!，您必须使用以下符号：
$translate->{"Hello World!!!!!!"}
This is all untested but should work.
这一切都未经测试，但应该有效。
Update: As @mario found out, it is possible to call functions from HEREDOC strings after all. I think using getters like this is a sleek solution, but using a direct function call may be easier. See the comments on how to do this.
更新：正如@mario 发现的那样，毕竟可以从 HEREDOC 字符串调用函数。我认为使用这样的 getter 是一个时尚的解决方案，但使用直接函数调用可能更容易。请参阅有关如何执行此操作的评论。
回答by Your Common Sense
As far as I can see, you just added heredoc by mistake
No need to use ugly heredoc syntax here.
Just remove it and everything will work:
据我所知，您只是错误地添加了 heredoc
无需在这里使用丑陋的 heredoc 语法。
只需删除它，一切都会起作用：
<p>Hello</p>
<p><?= _("World"); ?></p>
