foreach ($data1 as $k => $v){
$flag=true;
foreach ($data as $dk=>$dv){
if($v['fangId']==$dv['fangId']){
$time=$dv['dealTime']-$v['addTime'];
if($time<=$changetime*24*3600){
$flag=false;
}
}
}
if($flag){
$res[]=$v['fangId'];
}
}

$data1和data两组数据，做time对比打标记