Question

<?php

ob_start();

echo "<body><p>Hello "

if ($condition) {
   header( "Location: http://www.google.com/" );
   exit;
}

echo " World!</p></body>";
ob_end_flush();

?>

当$condition为真时我得到了这个：

<body>Hello

我想要的是当$condition为真时，请转到Google !!!

我不知道发生了什么，你能解释一下还是给我一个解决方案！？

感谢。

Answer 1

只需在标题调用之前添加ob_end_clean();。

Answer 2

一切都应该有效，只需在回显“;”后加<body><p>Hello即可，你会没事的。

Answer 3

如果我是你，我会先做错，然后再进行处理。

一个例子

$exit_condition_1 = some_value1;
$exit_condition_2 = some_value2;

if($exit_condition_1 == false){

     //Redirect
     //Exit

}

if(!$exit_condition_2){

     //Redirect
     //Exit

}


//start the buffer ob_start()

//show some HTML

//flash the buffer ob_end_clean()

there is no point of starting the buffer then if something goes wrong close it and redirect. Just do value testing at the begining then process the request.

An example: lets say that you want to view a product's info and you have a function that will do that


function view_product($product_id){

   if(!$product = getProductById($product_id)){

        //product does not exist, redirect
   }


   if(the user does not have enough access rights){

     //show a message maybe 
     //redirect
   }


   //everything is alright then show the product info

}

Answer 4

要解决类似的情况，即函数正在使用ob_start（）且此后有header("Location: http://www.example.com");，但出现“ 已发送... ”错误，我替换了{{1} }用

致电

header(...

，并且在特定情况下有效（无论如何，只需重定向页面即可。）

使用ob_start时如何在php中重定向头位置？

4 个答案: