Structure JSON output with PHP - php

Question

I am trying to generate a JSON output from the DATABASE with MySQL.
The result that I want is that I want an array around two matching ID's found in the tabel in the database.
To visualise what I wish to achieve here is my code:
This is my query
$sql = "SELECT * FROM `flower_garden` WHERE `id_flower` IN (0, 1)";
$result = mysql_query($sql);
while($record = mysql_fetch_assoc($result)) {
$rows[] = $record;
}
print json_encode($rows);
This is the JSON result I wish to achieve:
(What I want)
[
[
"id": "1",
"id_flower": "3",
"Title": "rose",
"Price": 1.25,
"Number": 15
},
{
"id": "2",
"id_flower": "3",
"Title": "daisy",
"Price": 0.75,
"Number": 25
}
],
[
{
"id": "3",
"id_flower": "6",
"Title": "rose",
"Price": 1.25,
"Number": 15
},
{
"id": "4",
"id_flower": "6",
"Title": "daisy",
"Price": 0.75,
"Number": 25
}
]
]
Visual result:
So, I want the matching ID's (in this case id_flower) put in one array.
This is the result I get:
(What I get)
[
[
"id": "1",
"id_flower": "3",
"Title": "rose",
"Price": 1.25,
"Number": 15
},
{
"id": "2",
"id_flower": "3",
"Title": "daisy",
"Price": 0.75,
"Number": 25
},
{
"id": "3",
"id_flower": "6",
"Title": "rose",
"Price": 1.25,
"Number": 15
},
{
"id": "4",
"id_flower": "6",
"Title": "daisy",
"Price": 0.75,
"Number": 25
}
]
]
Visual result:

Answer 1

Try this
foreach ($rows as $key => $val) {
$return[$val['id_flower']][] = $val;
}
echo json_encode($return);
Please note I have not tested it.

Answer 2

$sql = "SELECT * FROM `flower_garden` WHERE `id_flower` IN (0, 1)";
$result = mysql_query($sql);
$rows = array();
while($record = mysql_fetch_assoc($result)) {
array_push($rows[$record["id_flower"]], $record);
}
$result = array();
foreach($rows as $k => $v){
array_push($result, $v);
}
echo json_encode($result);
test yourself !