PHP ʖ²ἯTH º󍋼/A array_splice ˵÷ array_push ($input, $x, $y) array_splice ($input, count ($input), 0, array ($x, $y)) array_pop ($input) array_splice ($input, -1) array_shift ($input) array_splice ($input, 0, 1) array_unshift ($input, $x, $y) array_splice ($input, 0, 0, array ($x, $y)) $input[$x] = $y array_splice ($input, $x, 1, $y) =ד 1. array_splice() =ד $input = array ("red", "green", "blue", "yellow"); array_splice ($input, 2); // $input is now array ("red", "green") $input = array ("red", "green", "blue", "yellow"); array_splice ($input, 1, -1); // $input is now array ("red", "yellow") $input = array ("red", "green", "blue", "yellow"); array_splice ($input, 1, count($input), "orange"); // $input is now array ("red", "orange") $input = array ("red", "green", "blue", "yellow"); array_splice ($input, -1, 1, array("black", "maroon")); // $input is now array ("red", "green", // "blue", "black", "maroon") º󍋼/A ưµ㼯A array_slice ɏһ¼¶ array_sum