PHP ʖ²ἯTH
º/A
array_reduce
˵÷
=ד 1. array_reduce() =ד
function rsum($v, $w) {$v += $w; return $v;} function rmul($v, $w) {$v *= $w; return $v;} $a = array(1, 2, 3, 4, 5); $x = array(); $b = array_reduce($a, "rsum"); $c = array_reduce($a, "rmul", 10); $d = array_reduce($x, "rsum", 1);
բ½«ʹ $b µĖµΪ 15£¬$c µĖµΪ 1200£¨= 1*2*3*4*5*10£©£¬Ҕ¼° $d µĖµΪ 1¡£
º/A
ưµ㼯A
array_rand
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array_reverse