具有多个值的PHP语句

Question

有更短的写作方法吗？

<? 
if($_GET['id']==1 ||
$_GET['id']==3 ||
$_GET['id']==4 || 
$_GET['id']==5)
{echo 'does it really have to be this explicit?'};
?>

也许是这样的？

<?
if($_GET['id']==1 || 3 || 4 || 5){echo 'this is much shorter'};
?>

Answer 1

只需试着：

if ( in_array($_GET['id'], array(1, 3, 4, 5)) ) {}

Answer 2

也许不是更短，但更易读。尝试in_array()函数：

if (in_array($_GET['id'], array(1, 3, 4, 5)))
{
  echo "What about this?";
}

Answer 3

也许切换会有帮助

switch($_GET['id']) {
    case 1: 
    case 3: 
    case 4: 
    case 5:
        echo 'Slect maybe :P';
        break;
}