<?php   
header('Content-type:text/json');
$url_online = file_get_contents('https://');
//打印json数据
$jsondata = json_decode($url_online,true);
//格式化json数据为array数组

//数据循环读取;
foreach($jsondata['data']['list'] as $datass){
$lottery_date = $datass['lottery_date'];
$time = date("Y-m-d H:i:s", $lottery_date);
$lottery = array();
$lottery['expect'] = $datass['lottery_id'];
$lottery['opencode'] = $datass['lottery_numbers'];
$lottery['opentime'] = $time;
$data = ["row" => "10","code" => "tx28","info" => "null","data" => $lottery] ;
}
$json = json_encode($data,true);
echo $json;
?>

data数组无法循环写出，请问怎么才能解决这问题？

<?php
header('Content-type:text/json');
$url_online = file_get_contents('https://');
//打印json数据
$jsondata = json_decode($url_online,true);
//格式化json数据为array数组

//数据循环读取;
$data = [];
foreach($jsondata['data']['list'] as $datass){
$lottery_date = $datass['lottery_date'];
$time = date("Y-m-d H:i:s", $lottery_date);
$lottery = array();
$lottery['expect'] = $datass['lottery_id'];
$lottery['opencode'] = $datass['lottery_numbers'];
$lottery['opentime'] = $time;
$data[] = ["row" => "10","code" => "tx28","info" => "null","data" => $lottery] ;
}
$json = json_encode($data,true);
echo $json;
?>