PHP/array_slice()

array_slice($Array, 開始index, 取り出す要素数)

$sample1Array = ["イヌツゲ", "ハナミズキ", "ヤマボウシ"];
print_r(array_slice($sample1Array, 0, 2, true));

$sample2Array = array(
	"常緑樹" => "サザンカ",
	"針葉樹" => "アカマツ",
  	"落葉樹" => "ハナミズキ"
);
print_r(array_slice($sample2Array, 1, 2, true));