php不同页面

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$check_query = mysql_query("select S_number from ordinary_user where U_number='$UID' and U_password='$PWD' limit 1");
瀵规瘆涓

$check_query = mysql_query("select S_number from ordinary_user where U_number='{$UID}' and U_password='{$PWD}' limit 1");

$rs=mysql_query("select A_number from admin where A_number='$UID' and A_password='PWD' limit 1");

瀵规瘆涓
$rs=mysql_query("select A_number from admin where A_number='{$UID}' and A_password='{$PWD}' limit 1");

❷ php怎样识别手机和电脑访问分别跳转到不同的页面

//为true时就是手机访问否则为PC
functionisMobile(){
//如果有HTTP_X_WAP_PROFILE则一定是移动设备
if(isset($_SERVER['HTTP_X_WAP_PROFILE']))
returntrue;

//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($_SERVER['HTTP_VIA'])){
//找不到为flase,否则为true
returnstristr($_SERVER['HTTP_VIA'],"wap")?true:false;
}
//脑残法，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($_SERVER['HTTP_USER_AGENT'])))
returntrue;
}
//协议法，因为有可能不准确，放到最后判断
if(isset($_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')))){
returntrue;
}
}
returnfalse;
}