Question

php写一个计算机出问题了，代码放下边了，求大神看一下

<?php
class jisuan{
public function jia($z1,$z2){
return z1+z2;
}public function jian($z1,$z2){
return z1-z2;
}public function cheng($z1,$z2){
return z1*z2;
}public function chu($z1,$z2){
return z1/z2;
}
}
$s=new jisuan();
$s1=$_POST['shu1'];
$i=$_POST['fuhao'];
$s2=$_POST['shu2'];
switch ($i){
case "+":
echo $s->jia($s1,$s2);
break;
case "-":
echo $s->jian($s1,$s2);
break;
case "*":
echo $s->cheng($s1,$s2);
break;
case "/":
echo $s->chu($s1,$s2);
break;
}
小型计算器

Answer 1

class jisuan{
public function jia($z1,$z2){
return $z1+$z2;
}public function jian($z1,$z2){
return $z1-$z2;
}public function cheng($z1,$z2){
return $z1*$z2;
}public function chu($z1,$z2){
return $z1/$z2;
}
}