Viewing file:  Referrer.php (1.41 KB) -rw-rw-rw-
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<?php
/**
* W3TC Referrer detection
*/
define('W3TC_REFERRER_COOKIE_NAME', 'w3tc_referrer');
w3_require_once( W3TC_LIB_W3_DIR . '/CacheCase.php');
/**
* Class W3_Referrer
*/
class W3_Referrer extends W3_CacheCase {
/**
* PHP5-style constructor
*/
function __construct() {
parent::__construct('referrer.rgroups', 'referrer');
}
/**
* Returns HTTP referrer value
*
* @return string
*/
function get_http_referrer() {
$http_referrer = '';
if ($this->has_enabled_groups()) {
if (isset($_COOKIE[W3TC_REFERRER_COOKIE_NAME])) {
$http_referrer = $_COOKIE[W3TC_REFERRER_COOKIE_NAME];
} elseif (isset($_SERVER['HTTP_REFERER'])) {
$http_referrer = $_SERVER['HTTP_REFERER'];
setcookie(W3TC_REFERRER_COOKIE_NAME, $http_referrer, 0, w3_get_base_path());
}
} elseif(isset($_COOKIE[W3TC_REFERRER_COOKIE_NAME])) {
setcookie(W3TC_REFERRER_COOKIE_NAME, '', 1);
}
return $http_referrer;
}
function group_verifier($group_compare_value) {
static $http_referrer = null;
if (is_null($http_referrer))
$http_referrer = $this->get_http_referrer();
return $http_referrer && preg_match('~' . $group_compare_value . '~i', $http_referrer);
}
function do_get_group() {
return $this->get_http_referrer();
}
}
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