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