如何将变量插入PHP数组? [英] How do I insert a variable into a PHP array?

问题描述

我一直在网上寻找一些答案，但是没有一个是非常准确的.

I have looked for some responses on the web, but none of them are very accurate.

我希望能够做到这一点:

I want to be able to do this:

$id = "" . $result ["id"] . "";
$info = array('$id','Example');

echo $info[0];

这有可能吗?

推荐答案

您需要的是(不推荐):

What you need is (not recommended):

$info = array("$id",'Example'); // variable interpolation happens in ""

或者只是

$info = array($id,'Example'); // directly use the variable, no quotes needed

您已将变量括在单引号内，并且不会在单引号内进行变量插值，并且'$id'被视为长度为三的字符串，其中第一个字符为美元.

You've enclosed the variable inside single quotes and inside single quotes variable interpolation does not happen and '$id' is treated as a string of length three where the first character is a dollar.

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