WordPress 3.4

[autoinstalls/wordpress.git] / wp-includes / vars.php

diff --git a/wp-includes/vars.php b/wp-includes/vars.php
index 3b824a959ab23881468d76c74c2676915df3e136..7585793df7ea5594ce41b65fce68a83f2cd423d2 100644 (file)
--- a/wp-includes/vars.php
+++ b/wp-includes/vars.php
@@ -98,4 +98,29 @@ $is_IIS = !$is_apache && (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !
  */
 $is_iis7 = $is_IIS && (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/7.') !== false);
 
-?>
+/**
+ * Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
+ *
+ * @return bool true|false
+ */
+function wp_is_mobile() {
+       static $is_mobile;
+
+       if ( isset($is_mobile) )
+               return $is_mobile;
+
+       if ( empty($_SERVER['HTTP_USER_AGENT']) ) {
+               $is_mobile = false;
+       } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.)
+               || strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false
+               || strpos($_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 ) {
+                       $is_mobile = true;
+       } else {
+               $is_mobile = false;
+       }
+
+       return $is_mobile;
+}