我正在尝试从 mysql 表中获取所有结果并转换为 Json 格式。每行可能包含一个公共(public)列值(movie_name)。我想按该共同字段对结果进行分组。
这是我使用此查询得到的第一个结果
$slots = SELECT movie_name,id as slot_id,screen_id,time,price FROM `slots`;
结果:
{
"movies": [
{
"movie_name": "iceage",
"slot_id": "142",
"screen_id": "45",
"time": "6.00",
"price": "204"
},
{
"movie_name": "lights out",
"slot_id": "146",
"screen_id": "45",
"time": "11.00",
"price": "150"
},
{
"movie_name": "lights out",
"slot_id": "147",
"screen_id": "45",
"time": "2.00",
"price": "103"
},
{
"movie_name": "conjuring",
"slot_id": "148",
"screen_id": "45",
"time": "9.00",
"price": "500"
},
{
"movie_name": "iceage",
"slot_id": "151",
"screen_id": "45",
"time": "",
"price": "11"
},
{
"movie_name": "lights out",
"slot_id": "155",
"screen_id": "45",
"time": "11",
"price": "11"
}
]
}
我想像这样改变上面的结果:-
{
"movies": [
{
"movie_name": "lights out",
"slots":[ {
"slot_id": "146",
"screen_id": "45",
"time": "11.00",
"price": "150"
}
{
"slot_id": "147",
"screen_id": "45",
"time": "2.00",
"price": "103"
}
{
"slot_id": "155",
"screen_id": "45",
"time": "11",
"price": "11"
}
]
},
{
"movie_name": "conjuring",
"slots": {
"slot_id": "148",
"screen_id": "45",
"time": "9.00",
"price": "500"
}
},
{
"movie_name": "iceage",
"slots":[ {
"slot_id": "142",
"screen_id": "45",
"time": "6.00",
"price": "204"
}
{
"slot_id": "151",
"screen_id": "45",
"time": "",
"price": "11"
}
]
},
]
}
我应该如何更改查询以获得上述结果。我尝试使用以下 PHP 代码:
foreach ($slots as $row) {
$movie_name = $row['movie_name'];
if (!isset($groups[$movie_name])) {
$groups[$movie_name] = array();
}
$groups[$movie_name][] = $row;
}
但没有得到所需的结果。请帮忙。谢谢..
最佳答案
$json_arr = array("movies"=>array());
foreach ($slots as $slot) {
$json_arr['movies'][$slot["movie_name"]]['movie_name'] = $slot["movie_name"];
$json_arr['movies'][$slot["movie_name"]]['slots'][] = array (
"slot_id" => $slot["slot_id"],
"screen_id" => $slot["screen_id"],
"time" => $slot["time"],
"price" => $slot["price"]
);
}
关于php - 按一列值对多个 mysql 结果进行分组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38553204/