返回PHP中多维数组中最后一个数组的元素

Question

如何在PHP中动态显示最后一个数组中的元素。例如:

Array ( [0] => Array ( [id] => 6 [user_id] => 8 [category_path] => Sport)
        [1] => Array ( [id] => 8 [user_id] => 8 [category_path] => Computers))

为了从最后一个数组

返回"id"

8

对于下一个例子

Array ( [0] => Array ( [id] => 6 [user_id] => 8 [category_path] => Sport)
        [1] => Array ( [id] => 8 [user_id] => 5 [category_path] => Computers)
        [2] => Array ( [id] => 16 [user_id] => 45 [category_path] => Soft))

返回

   16

谢谢!

Answer 1

试试这个:

function getLastId(&$array){
    $tmp=end($array);
    return $tmp['id'];
}

Answer 2

如何计算元素并像这样访问它们?

$array[count($array)-1] # to get the last array item
$array[count($array)-1]['id'] # to get the id of the last entry