php 开关,多个案例的相同值
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时间:2020-08-25 10:28:50 来源:igfitidea点击:
Switch, same value for multiple case
提问by James
switch ($i) {
case A:
$letter = 'first';
break;
case B:
$letter = 'first';
break;
case C:
$letter = 'first';
break;
case D:
$letter = 'second';
break;
default:
$letter = 'third';
}
Is there any way to shorten first three cases?
有没有办法缩短前三个案例?
They have the same values inside.
它们内部具有相同的值。
回答by svens
switch ($i) {
case A:
case B:
case C:
$letter = 'first';
break;
case D:
$letter = 'second';
break;
default:
$letter = 'third';
}
Yep there is. If there's no break
after a case
, the code below the next case
is executed too.
是的。如果break
a 之后没有case
,则 next 下方的代码case
也会执行。
回答by Otar
switch ($i) {
case A:
case B:
case C:
$letter = 'first';
break;
case D:
$letter = 'second';
break;
default:
$letter = 'third';
}