```php
$res = array(); // 在外部定义$res
array_walk($data, function (&$v) use ($param, &$res) {
$v = json_decode($v, true);
if ( $v['appointment_date'] == $param['dateline'] ){
$res['venue_nameinfo_id'] = $v['venue_nameinfo_id'];
$res['appointment_date'] = $v['appointment_date'];
$res['start_time'] = $v['start_time'];
$res['end_time'] = $v['end_time'];
$res['venueinfo_type'] = $v['venueinfo_type'];
$res['venue_nameinfo_title'] = $v['venue_nameinfo_title'];
$res['venue_nameinfo_multiplayer'] = $v['venue_nameinfo_multiplayer'];
}
});
var_dump($res);
```
打印出来的结果是:
array(0) {
}