/**
* @return bool判断是不是手机访问 返回true代码是
*/
function isMobile()
{
// 如果有HTTP_X_WAP_PROFILE则一定是移动设备
if ( isset ($_SERVER[ ‘HTTP_X_WAP_PROFILE’ ]))
return true ;
//此条摘自TPM智能切换模板引擎，适合TPM开发
if ( isset ($_SERVER[ ‘HTTP_CLIENT’ ]) && ‘PhoneClient’ == $_SERVER[ ‘HTTP_CLIENT’ ])
return true ;
//如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
if ( isset ($_SERVER[ ‘HTTP_VIA’ ]))
//找不到为flase,否则为true
return stristr($_SERVER[ ‘HTTP_VIA’ ], ‘wap’ ) ? true : false ;
//判断手机发送的客户端标志,兼容性有待提高
if ( isset ($_SERVER[ ‘HTTP_USER_AGENT’ ])) {
$clientkeywords = array (
‘nokia’ , ‘sony’ , ‘ericsson’ , ‘mot’ , ‘samsung’ , ‘htc’ , ‘sgh’ , ‘lg’ , ‘sharp’ , ‘sie-‘ , ‘philips’ , ‘panasonic’ , ‘alcatel’ , ‘lenovo’ , ‘iphone’ , ‘ipod’ , ‘blackberry’ , ‘meizu’ , ‘android’ , ‘netfront’ , ‘symbian’ , ‘ucweb’ , ‘windowsce’ , ‘palm’ , ‘operamini’ , ‘operamobi’ , ‘openwave’ , ‘nexusone’ , ‘cldc’ , ‘midp’ , ‘wap’ , ‘mobile’
);
//从HTTP_USER_AGENT中查找手机浏览器的关键字
if (preg_match( “/(” . implode( ‘|’ , $clientkeywords) . “)/i” , strtolower($_SERVER[ ‘HTTP_USER_AGENT’ ]))) {
return true ;
}
}
//协议法，因为有可能不准确，放到最后判断
if ( isset ($_SERVER[ ‘HTTP_ACCEPT’ ])) {
// 如果只支持wml并且不支持html那一定是移动设备
// 如果支持wml和html但是wml在html之前则是移动设备
if ((strpos($_SERVER[ ‘HTTP_ACCEPT’ ], ‘vnd.wap.wml’ ) !== false ) && (strpos($_SERVER[ ‘HTTP_ACCEPT’ ], ‘text/html’ ) === false || (strpos($_SERVER[ ‘HTTP_ACCEPT’ ], ‘vnd.wap.wml’ ) < strpos($_SERVER[ ‘HTTP_ACCEPT’ ], ‘text/html’ )))) {
return true ;
}
}
return false ;
}
