关于php获取变量有关问题

@$judge=$_GET["speed"];
if(@$keyboard=$_GET["keyboard"]){
$keyboardfinal=100;
}
if(@$judge==1){
if($keyboard<40 && $keyboard>0){
@$keyboardfinal=50;
    }
}
if(@$judge==2){
if(@$keyboard<50&& $keyboard>0){
$keyboardfinal=50;
    }
}
if(@$judge==3 && (@$keyboard<170 && @$keyboard>0)){
$keyboardfinal=50;
    }

$judge = 1;
$keyboard = 35;
$keyboardfinal = null;
switch($judge){
    case 1:
        if($keyboard<40 && $keyboard>0)
            $keyboardfinal=50;
        break;
    case 2:
        if($keyboard<50&& $keyboard>0)
            $keyboardfinal=50;
        break;
    case 3 && ($keyboard<170 && $keyboard>0):
        $keyboardfinal=50;
        break;
}
echo "keyboardfinal-->>".$keyboardfinal;
#50

------解决方案--------------------

探讨

PHP code
@$judge=$_GET["speed"];
if(@$keyboard=$_GET["keyboard"]){
$keyboardfinal=100;
}
if(@$judge==1){
if($keyboard<40 && $keyboard>0){
@$keyboardfinal=50;
    }
}
if(@$judge==2){
if(@$keyb……
 

                 
              
              
        
            
      
      
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