如何用多個「或」運算符優化請求？

Question

如果我的if和request中有很多「ands」和「ands」有相同的值，有沒有辦法減少代碼？我想需要$row['animal']只有一次：

if ($row['animal'] == "cat") or 
    ($row['animal'] == "dog") or 
    ($row['animal'] == "bird") or 
    ($row['animal'] == "monkey") or 
    ($row['animal'] == "mouse") or 
    ($row['animal'] == "hedgehog"){ 
    echo "many animals";} 

Answer 1

echo in_array($row['animal'], array('cat', 'dog', 'bird', 'monkey', 'mouse','hedgehog')) 
     ? 'many animals' 
     : 'no animals';