Question

如何把结果对象转成数组

Answer 1

$modelList = (array)$modelList;

或者 $modelList = new ArrayObject($modelList);

Answer 2

Student s1=new Student("张三","20");
Student s2=new Student("李四","21");
Student s3=new Student("王五","22");
Student s4=new Student("赵六","23");
Student s5=new Student("马奇","24");

Student [] demo={s1,s2,s3,s4,s5};
List<Student> al=new ArrayList<Demo>();
for(int i=0;i<demo.length;i++){
list.add(demo[i]);

}