Refresh a page using PHP

Use header() function to refresh a web page in PHP. The HTTP functions are those functions which manipulate information sent to the client or browser by the Web server before any other output has been sent. The PHP header() function sends an HTTP header to a client or browser in raw form. Before HTML, XML, JSON or other output has been sent to a browser or client, a raw data is sent with the request (especially HTTP Request) made by the server as header information. HTTP header provides required information about the object sent in the message body more precisely about the request and response.

Syntax:

void header( $header, $replace = TRUE, $http_response_code )
Or
header(string, replace, http_response_code)

Parameters:

  • $header: It holds the header string. There are two types of header calls. The first header starts with string “HTTP/”, which is used to figure out the HTTP status code to send. The second case of header is the “Location:”. It is mandatory parameter.
  • $replace: It is optional parameter. It denotes the header should replace previous or add a second header. The default value is True (will replace). If $replace value is False then it force multiple headers of the same type.
  • $http_response_code: It is an optional parameter. It forces the HTTP response code to the specified value (PHP 4.3 and higher).

Note: This function prevents more than one header to be sent at once. This is a protection against header injection attacks after PHP 4.4 release.

Below example illustrates the use of header() to refresh current page in PHP:

Example: This example uses header() function to refresh a web page in every 3 seconds.

filter_none

edit
close

play_arrow

link
brightness_4
code

<?php
  
// Demonstrate the use of header() function
// to refresh the current page
   
echo "Welcome to index page</br>";
echo "Page will refresh in every 3 seconds</br></br>";
    
// The function will refresh the page 
// in every 3 second
header("refresh: 3");
    
echo date('H:i:s Y-m-d');
  
exit;
?>

chevron_right






                        filter_none










Output:




Example 2: This example uses header() function to redirect web page into another page.













                                    filter_none




                                    edit

                                    close




                                    play_arrow




                                    link

                                    brightness_4

                                    code
                                




















<?php 


  


// Demonstrate the use of header() function 


// to refresh the current page 


   


echo "Welcome to index page</br>"; 


echo "we will redirect to GeeksForGeeks Official website in 3 second"; 


    


// The function will redirect to geeksforgeeks official website 


header("refresh: 3; url = https://www.geeksforgeeks.org/"); 


    


exit; 


?> 



















                        chevron_right







                        filter_none










Output:




References: https://www.php.net/manual/en/function.header.php



          
          
          
          

            

    

        My Personal Notes
        arrow_drop_up
    

    

        
        

            
            
        

    


Recommended Posts:
Image
Rajnis09
Check out this Author's contributed articles.
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on  the "Improve Article" button below.