entityMap|blocks|key|9r8pa|text|您正在将未定义的变量视为数组。林特给了你一个警告，这是绝对正确的。但这并不意味着代码不能工作。它只是警告你它可能出了点问题。注解在这里帮不上忙。当您将变量赋给它时，它是数组，就好像它是一个数组一样，所以注释并没有说明任何新的东西。是否将此文件包含在定义了包含config.php的作用域中的变量的另一个文件中并不重要，因为linter是单独处理该文件的。您也可以包含来自未定义变量的上下文中的文件，但这超出了linter的范围。因此linter倾向于警告您，因为它认为可以将文件包含在未定义变量的范围内。这一切都归结于这样一个事实，即您在全局范围内编写代码，因此它具有副作用。当您包含更多这样的文件时，全局作用域将混合在一起，混合的方式将取决于包含的顺序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|7jj2i|您可以选择：|c47re|1)确保它是在config.php中定义的|aksqm|$config+=+[];
//the+rest+of+your+code+here|code-block|syntax|javascript|9gm99|或|b30td|if+(!isset($config))+{
++$config+=+[];
}
//+rest+of+your+code+here|1l1e2|但您可能还希望检查它是否为数组，否则抛出异常。|at6n2|2)将有副作用的代码从全局作用域中移除，移至function：|d841u|function+createConfig(array+$config+=+[])+{
++//+your+code+comes+here
++return+$config;
}|14amk|3)接受这样的事实:你确信你以正确的方式包含了它，并且林特警告你一些可能已经发生的事情，但你确保它没有发生。|epd30|我想你能做的最好的就是选项2--避免全局范围的副作用。|1l8f7^0|0|0|0|0|0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|10|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|11|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|12|9|@]|A|@]|B|$]]|$2|G|4|H|6|I|8|13|9|@]|A|@]|B|$J|K]]|$2|L|4|M|6|7|8|14|9|@]|A|@]|B|$]]|$2|N|4|O|6|I|8|15|9|@]|A|@]|B|$J|K]]|$2|P|4|Q|6|7|8|16|9|@]|A|@]|B|$]]|$2|R|4|S|6|7|8|17|9|@]|A|@]|B|$]]|$2|T|4|U|6|I|8|18|9|@]|A|@]|B|$J|K]]|$2|V|4|W|6|7|8|19|9|@]|A|@]|B|$]]|$2|X|4|Y|6|7|8|1A|9|@]|A|@]|B|$]]|$2|Z|4|-4|6|7|8|1B|9|@]|A|@]|B|$]]]]

You are treating undefined variable as an array. The linter is giving you a warning and it is absolutely correct. It doesnt mean the code will not work though. It is just warning you that something might be wrong with it. The annotation is not going to help here. The variable is array the moment you assign to it as if it was an array anyway, so the annotation is not telling anything new.
Whether you include this file in another file that defined the variable in the scope in which config.php is included is irrelevant, because linter treats the file in isolation. You can as well include the file from a context where the variable is not defined, but that is out of reach of the linter. And so the linter prefers to warn you, because it sees it as possible to include the file in scope where the variable is not defined. It all comes down to the fact that you wrote the code in global scope and so it has side effects. Global scopes will mix together when you include more such files and the way it is mixed will depend on the order of inclusion.

Your options are:

1) Make sure it is defined in the config.php

<pre><code>$config = [];
//the rest of your code here
</code></pre>

or

<pre><code>if (!isset($config)) {
 $config = [];
}
// rest of your code here
</code></pre>

But you might want to also check that it is array and throw exception otherwise.

2) Remove the code from global scope with side effects, move it to function instead:

<pre><code>function createConfig(array $config = []) {
 // your code comes here
 return $config;
}
</code></pre>

3) Live with the fact that you are sure you are including it the correct way and that the linter is warning you about something that might have happened but you made sure it is not.

IMO the best you can do is option 2 - avoid global scope side effects.

entityMap|blocks|key|1rff3|text|/**+@var+array+$config+*/|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1qsj5|是完全正确的。即将到来的PDT+6.3已经支持这一点。|unstyled|14imd^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$C|D]]|$2|E|4|F|6|G|8|J|9|@]|A|@]|B|$]]|$2|H|4|-4|6|G|8|K|9|@]|A|@]|B|$]]]]

<pre><code>/** @var array $config */
</code></pre>

is perfectly correct. Upcoming PDT 6.3 already support this.

EDIT: i updated from eclipse version 4.12.0 and PDT version 6.2.0.201812112302 to eclipse version 4.13.0M3 (pre-release), and PDT version 6.3.0.201908130957 (pre-release), and i can no longer reproduce the issue in the pre-release versions, now doing <code>/** @var variableType $variableName */</code> silence the error - i won't say for sure until the actual release comes out, but i'm pretty sure it's just a bug. (that has been fixed in dev but has not been released yet)

i have this really simple code: 

<pre><code>&lt;?php
declare(strict_types = 1);
namespace vaporfs;

/** @var array $config */
$config["db"]["dsn"] = "mysql:host=127.0.0.1;port=3306;dbname=vaporfs;charset=utf8mb4";
$config["db"]["username"] = "vaporfs";
$config["db"]["password"] = "ffaXIgcDAmXkB5iJXG";
</code></pre>

that's all, just that. and the eclipse linter complains that $config does not exist before attmpting to use it:
 <a href="https://i.stack.imgur.com/04eks.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/04eks.png" alt="enter image description here"></a>

how do i tell the eclipse linter that variable $config does indeed exist? 

(i really thought the answer was <code>/** @var array $config */</code>, but apparently not. or i'm doing it correctly but it's a bug in the linter perhaps?)

how to tell eclipse php linter that a variable exists?

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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 编辑:我从eclipse版本4.12.0和PDT版本6.2.0.201812112302更新到了eclipse版本4.13.0M3 (预发布)和PDT版本6.3.0.201908130957 (预发布)，我不能再在预发布版本中重现这个问题，现在执行/** @var variableType $variableName...

问如何告诉eclipse php linter一个变量存在？
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问如何告诉eclipse php linter一个变量存在？EN