Question

php如何去掉二维数组中重复的元素

Answer 1

$b=array();foreach($a as $v){$b[]=$v['login_time'];}$c=array_unique($b);foreach($c as $v){$n=0;foreach($a as $t){if($v==$t['login_time'])$n++;}echo "数字 $v 出现了 $n 次";}