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What is the use of header function in PHP?

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What is the use of header function in PHP?
posted May 23, 2014 by Amanpreet Kaur

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4 Answers

+1 vote

The header function sends a raw HTTP header to client. It can be used for redirection of Pages.

answer May 26, 2014 by Karamjeet Singh
+1 vote

The header() function is used to a raw HTTP header to a client.

Syntax
header(string,replace,http_response_code)

string              Required. Specifies the header string to send
replace             Optional. Indicates whether the header should replace previous 
                    or add a second header. Default is TRUE (will replace). 
                    FALSE (allows multiple headers of the same type)
http_response_code  Optional. Forces the HTTP response code to the specified value

EXAMPLES
1) Redirect the browser to a Page

<?php
header("Location: http://tech.QueryHome.com/"); /* Redirect browser */
?>

2) Use of Replace variable 

<?php
header('WWW-Authenticate: Negotiate');
header('WWW-Authenticate: NTLM', false);
?>
answer May 30, 2014 by Santosh Prasad
0 votes

header() is used to send a raw HTTP header.It is important to notice that header() must be called before any actual output is sent..........

syntax:-header(string,replace,http_response_code)

answer May 30, 2014 by Vrije Mani Upadhyay
0 votes

The header() function sends a raw HTTP header to a client.

Syntax

header(string,replace,http_response_code)

It is important to notice that header() must be called before any actual output is sent (In PHP 4 and later, you can use output buffering to solve this problem):

Example 

<html>
<?php
/* This will give an error. Note the output
 * above, which is before the header() call */
header('Location: http://www.QueryHome.com/');
exit;
?>

Credit: http://php.net/manual/en/function.header.php

answer Mar 11, 2016 by Ashish Kumar Khanna
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