$contaminated = (isset($_files['globals']) || isset($_request['globals'])) ? true : false;
麻烦说的详细点！高结分！
回复讨论(解决方案) 当传入的参数中含有名为 globals 的项时，$contaminated 就为 真
这种是三元表达式
$contaminated = (isset($_files['globals']) || isset($_request['globals'])) ? true : false;
相当于
if(isset($_files['globals']) || isset($_request['globals'])){
$contaminated = true;
}else{
$contaminated = false;
}