PHP if语句具有多个值

是否有更短的写作方式？

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

也许这样的事情？

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

解决方法:

试试：

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