在switch语句中更新PHP变量(简单)

Question

在PHP中,我有一个名为$ chickens的开关之外的值,等于1.在通过switch语句之后,我希望将值更改为b.

//original value of var
$chickens = 1;

switch ($chickens) {
  case "0":
    $chickens === "a";
    break;
  case "1":
    $chickens === "b";
    break;
  case "2":
    $chickens === "c";
    break;
  case "3":
    $chickens === "b";
    break;
}

//want this to be "b" defined in switch
echo $chickens;

由于某种原因,价值不会更新:(.任何想法

Answer 1

你使用的是错误的操作员.=是赋值运算符.===是一个比较运算符:

//original value of var
$chickens = 1;

switch ($chickens) {
  case "0":
    $chickens = "a";
    break;
  case "1":
    $chickens = "b";
    break;
  case "2":
    $chickens = "c";
    break;
case "3":
    $chickens = "d";
    break;
}

//want this to be "b" defined in switch
echo $chickens;