PHP HTTP Functions

PHP HTTP Introduction
The HTTP functions let you manipulate information sent to the browser by the Web server, before any other output has been sent.


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Installation
The directory functions are part of the PHP core. There is no installation needed to use these functions.


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PHP HTTP Functions
PHP: indicates the earliest version of PHP that supports the function.

Function Description PHP
header() Sends a raw HTTP header to a client 3
headers_list() Returns a list of response headers sent (or ready to send) 5
headers_sent() Checks if / where the HTTP headers have been sent 3
setcookie() Sends an HTTP cookie to a client 3
setrawcookie() Sends an HTTP cookie without URL encoding the cookie value 5