带有参数的PHP标头位置 [英] PHP Header Location with parameter

问题描述

是否可以将参数附加到PHP标头位置？我无法让它工作。实际上是否允许这种语法？

Is it possible to append a parameter to a PHP Header Location? I'm having trouble getting it to work. Is this syntax actually allowed?

$qry = $_SERVER['QUERY_STRING'];
header('Location: http://localhost/blast/v2/?$qry ') ;

它只是不会用它的实际值替换$ qry ....为什么??

it just won't replace $qry wit its actual value....why??

在浏览器中它看起来像这样：

in the browser it ends up looking like this:

http：// localhost / blast / v2 / ？$ qry

谢谢

推荐答案

将单引号更改为双引号：

Change the single quotes to double quotes:

header("Location: http://localhost/blast/v2/?$qry");

PHP中的单引号字符串被视为字符串文字，未解析变量。为变量解析双引号字符串 ，因此您将获得 $ qry 包含附加内容，而不是字面上 $ qry 。

A single quoted string in PHP is treated as a string literal, which is not parsed for variables. Double quoted strings are parsed for variables, so you will get whatever $qry contains appended, instead of literally $qry.

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