* for the browser to set which one is currently being used.
*
* Detects which user environment WordPress is being used on.
- * Only attempts to check for Apache and IIS. Two web servers
- * with known permalink capability.
+ * Only attempts to check for Apache, Nginx and IIS -- three web
+ * servers with known pretty permalink capability.
+ *
+ * Note: Though Nginx is detected, WordPress does not currently
+ * generate rewrite rules for it. See http://codex.wordpress.org/Nginx
*
* @package WordPress
*/
global $pagenow,
$is_lynx, $is_gecko, $is_winIE, $is_macIE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone, $is_IE,
- $is_apache, $is_IIS, $is_iis7;
+ $is_apache, $is_IIS, $is_iis7, $is_nginx;
// On which page are we ?
if ( is_admin() ) {
$is_lynx = true;
} elseif ( stripos($_SERVER['HTTP_USER_AGENT'], 'chrome') !== false ) {
if ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chromeframe' ) !== false ) {
- if ( $is_chrome = apply_filters( 'use_google_chrome_frame', is_admin() ) )
+ $is_admin = is_admin();
+ /**
+ * Filter whether Google Chrome Frame should be used, if available.
+ *
+ * @since 3.2.0
+ *
+ * @param bool $is_admin Whether to use the Google Chrome Frame. Default is the value of is_admin().
+ */
+ if ( $is_chrome = apply_filters( 'use_google_chrome_frame', $is_admin ) )
header( 'X-UA-Compatible: chrome=1' );
$is_winIE = ! $is_chrome;
} else {
}
} elseif ( stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false ) {
$is_safari = true;
- } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false ) {
- $is_gecko = true;
- } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Win') !== false ) {
+ } elseif ( ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Trident') !== false ) && strpos($_SERVER['HTTP_USER_AGENT'], 'Win') !== false ) {
$is_winIE = true;
} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false ) {
$is_macIE = true;
+ } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false ) {
+ $is_gecko = true;
} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false ) {
$is_opera = true;
} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Nav') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.') !== false ) {
*/
$is_apache = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false);
+/**
+ * Whether the server software is Nginx or something else
+ * @global bool $is_nginx
+ */
+$is_nginx = (strpos($_SERVER['SERVER_SOFTWARE'], 'nginx') !== false);
+
/**
* Whether the server software is IIS or something else
* @global bool $is_IIS
$is_IIS = !$is_apache && (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer') !== false);
/**
- * Whether the server software is IIS 7.X
+ * Whether the server software is IIS 7.X or greater
* @global bool $is_iis7
*/
-$is_iis7 = $is_IIS && (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7.') !== false);
+$is_iis7 = $is_IIS && intval( substr( $_SERVER['SERVER_SOFTWARE'], strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/' ) + 14 ) ) >= 7;
/**
* Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Silk/') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'Kindle') !== false
|| strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false
- || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false ) {
+ || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false
+ || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mobi') !== false ) {
$is_mobile = true;
} else {
$is_mobile = false;