PHP ʖ²ἯTH º󍋼/A array_sum ˵÷ =ד 1. array_sum() =ד $a = array(2, 4, 6, 8); echo "sum(a) = ".array_sum($a)."\n"; $b = array("a"= 1.2,"b"= 2.3,"c"= 3.4); echo "sum(b) = ".array_sum($b)."\n"; sum(a) = 20 sum(b) = 6.9 º󍋼/A ưµ㼯A array_splice ɏһ¼¶ array_unique