php - 在 url 地址中传递 php 变量

Question

我知道我可以像这样传递一个常量参数：

header('位置：page.php?parameter=9999');

但是我怎么能用变量来做呢？像这样：

header('位置：page.php?parameter=$variable'); ？？？

Answer 1

That is correct or you can use session variables

<?php
sesion_start();
//set variable
$_SESSION['juanita'] = 'some value';
?>



<?php
session_start();
//get variable
$newVar = $_SESSION['juanita']; //'some value'
?>

http://www.php.net/manual/en/book.session.php

Just a note, when using variables inside strings use double quotes

header("Location: page.php?parameter=$variable");

It might be better concatenate like SeanWM answer

$variable = 9999;
header('Location: page.php?parameter=' . $variable);

Answer 2

$variable = 9999;
header('Location: page.php?parameter=' . $variable);

Answer 3

Just like you are doing, just set the variable before sending any headers:

<?php
  $variable = "Something";
  header("Location:page.php?paramter=" . $variable);
?>