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How to redirect with header location in php when using ob_start?

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北恋
北恋 2021-01-23 06:17 
Hello \"

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

echo \" World!
<
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4条回答
  • 忘了有多久
    2021-01-23 06:39

    Everything should work, just put an ; after echo "<body><p>Hello" and you will be fine..

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  • 小蘑菇
    2021-01-23 06:44

    Just add ob_end_clean(); before the header call.

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  • 眼角桃花
    2021-01-23 06:47

    To resolve a similar situation where a function was using ob_start() and there was header("Location: http://www.example.com"); after that but erring "already sent...", I replaced the header(... call with 

    echo "<script> window.location.href = 'https://www.example.com' </script>"

    and it worked in that particular case (all that was needed was a just page redirect anyway).

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  • 情歌与酒
    2021-01-23 06:49

    If I were you, I would have started what might go wrong first then do the processing.

    An example 

    $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

}
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