判断客户端是否手机访问-PHP源码

1. [代码][PHP]代码

/**
 * 判断是否手机访问
 */
function is_mobile()
{
    static $is_mobile;
    if (isset($is_mobile)) return $is_mobile;
    if (empty($_SERVER[&＃39;HTTP_USER_AGENT&＃39;])) {
        $is_mobile = false;
    } elseif (strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;Mobile&＃39;) !== false // many mobile devices (all iPhone, iPad, etc.)
        || strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;Android&＃39;) !== false
        || strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;Silk/&＃39;) !== false
        || strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;Kindle&＃39;) !== false
        || strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;BlackBerry&＃39;) !== false
        || strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;Opera Mini&＃39;) !== false
        || strpos($_SERVER[&＃39;HTTP_USER_AGENT&＃39;], &＃39;Opera Mobi&＃39;) !== false
    ) {
        $is_mobile = true;
    } else {
        $is_mobile = false;
    }
    return $is_mobile;
}