【程式】PHP : 取得部份陣列資料

array array_slice ( array $array , int $offset [, int $length [, bool $preserve_keys ]] )

• array
  The input array.

• offset
  If offset is non-negative, the sequence will start at that offset in the array . If offset is negative, the sequence will start that far from the end of the array .

• length
  If length is given and is positive, then the sequence will have that many elements in it. If length is given and is negative then the sequence will stop that many elements from the end of the array. If it is omitted, then the sequence will have everything from offset up until the end of the array .

• preserve_keys
  Note that array_slice() will reorder and reset the array indices by default. You can change this behaviour by setting preserve_keys to TRUE.

下面來個Sample

$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 2);      // returns "c", "d", and "e"
$output = array_slice($input, -2, 1);  // returns "d"
$output = array_slice($input, 0, 3);   // returns "a", "b", and "c"
// note the differences in the array keys
print_r(array_slice($input, 2, -1));
print_r(array_slice($input, 2, -1, true));

The above example will output:
Array
(
    [0] => c
    [1] => d
)
Array
(
    [2] => c
    [3] => d
)

 

 

另可參考 Js :【Ｊ】取得部份陣列資料