if(!empty($comments)){
foreach ($comments as $m){
$new_comments[$m['id']]=$m;
$new_comments[$m['id']]['children']=array();
if($m['parentid']!=0){
$new_comments[$m['parentid']]['children'][]=$m['id'];
}
}
foreach ($new_comments as $k=>$v){
if($v['parentid']!=0){
unset($new_comments[$k]);
}
}
}
结果