Array to JSON using PHP in Codeigniter - php

Question

I have an array like below:
Array ( [0] => Array ( [SI] => 1
[name] => Nick
[location] => Russia
[year] => 2011 )
[1] => Array ( [SI] => 8
[name] => Mike
[location] => Russia
[year] => 2011 )
[2] => Array ( [SI] => 2
[name] => Tom
[location] => Russia
[year] => 2010 )
[3] => Array ( [SI] => 6
[name] => Duke
[location] => Russia
[year] => 2010 ) )
Current JSON format:
{
"name": "Amalians",
"img": "https:\/\/dl.dropboxusercontent.com\/u\/19954023\/marvel_force_chart_img\/marvel.png",
"children": [
{
"name": "2011"
},
{
"children": [
{
"SI": "1"
}
]
},
{
"children": [
{
"name": "Nick"
}
]
},
{
"children": [
{
"location": "Russia"
}
]
},
{
"name": "2011"
},
{
"children": [
{
"SI": "8"
}
]
},
{
"children": [
{
"name": "Mike"
}
]
},
{
"children": [
{
"location": "Russia"
}
]
},
{
"name": "2010"
},
{
"children": [
{
"SI": "2"
}
]
},
{
"children": [
{
"name": "Tom"
}
]
},
{
"children": [
{
"location": "Russia"
}
]
},
{
"name": "2010"
},
{
"children": [
{
"SI": "6"
}
]
},
{
"children": [
{
"name": "Duke"
}
]
},
{
"children": [
{
"location": "Russia"
}
]
}
]
}
Desired JSON format:
{
"name": "marvel",
"img": "https://dl.dropboxusercontent.com/u/19954023/marvel_force_chart_img/marvel.png",
"children": [
{
"name": "2011",
"children": [
{
"SI": "1",
"name": "Nick",
"location": "Russia"
},
{
"SI": "8",
"name": "Mike",
"location": "Russia"
}
]
},
{
"name": "2010",
"children": [
{
"SI": "2",
"name": "Tom",
"location": "Russia"
},
{
"SI": "6",
"name": "Duke",
"location": "Russia"
}
]
}
]
}
CODE:
$data['name'] = "Amalians";
$data['img'] = "https://dl.dropboxusercontent.com/u/19954023/marvel_force_chart_img/marvel.png";
foreach($people as $row)
{
$data['children'][]['name'] = $row['year'];
$data['children'][]['children'][]['SI'] = $row['SI'];
$data['children'][]['children'][]['name'] = $row['name'];
$data['children'][]['children'][]['location'] = $row['location'];
}
echo "<pre>";
echo json_encode($data,JSON_PRETTY_PRINT);
echo "</pre>"; exit();
NOTE: $people is the array defined above.
Please kindly help me to do this. I have been working on this for last two days and till this moment I couldn't find any solution. Thanks

Answer 1

i guess the simplest way is to group your data
$arrData = [
[
"SI" => 1,
"name" => "Nick",
"location" => "Russia",
"year" => 2011
],
[
"SI" => 2,
"name" => "Mike",
"location" => "Russia",
"year" => 2011
],
[
"SI" => 3,
"name" => "Tom",
"location" => "Russia",
"year" => 2010
],
[
"SI" => 4,
"name" => "Duke",
"location" => "Russia",
"year" => 2010
],
];
$arrGroupedData = [];
foreach($arrData AS $row)
{
$arrGroupedData[$row['year']][] = [ "SI" => $row['SI'], "name" => $row['name'], "location" => $row['location']];
}
$arrGroupFormattedData = [];
foreach($arrGroupedData AS $key => $arrGroup)
{
$arrGroupFormattedData[] = ["name" => $key, "children" => $arrGroup];
}
$data = [
"name" => "Amalians",
"img" => "https://dl.dropboxusercontent.com/u/19954023/marvel_force_chart_img/marvel.png",
"children" => $arrGroupFormattedData
];
echo json_encode($data,JSON_PRETTY_PRINT);

Answer 2

You can try this:
Here you need to group the array by key year.
$array = array();
foreach ($people as $val) {
$array[$val['year']][] = $val;
}
$data['name'] = "Amalians";
$data['img'] = "https://dl.dropboxusercontent.com/u/19954023/marvel_force_chart_img/marvel.png";
$i = 0;
foreach ($array as $key => $value) {
foreach ($value as $key2 => $value2) {
$data['children'][$i]['name'] = $value2['year'];
$data['children'][$i]['children'][$key2]['SI'] = $value2['SI'];
$data['children'][$i]['children'][$key2]['name'] = $value2['name'];
$data['children'][$i]['children'][$key2]['location'] = $value2['location'];
}
$i++;
}
echo "<pre>";
echo json_encode($data, JSON_PRETTY_PRINT);
echo "</pre>";
exit();

Answer 3

<?php
$array = Array(Array( "SI" => 1,
"name" => Nick,
"location" => Russia,
"year" => 2011),
Array ( "SI" => 8,
"name" => Mike ,
"location" => Russia ,
"year" => 2011),
Array ( "SI" => 2,
"name" => Tom,
"location" => Russia,
"year" => 2010 ),
Array ( "SI" => 6,
"name" => Duke,
"location" => Russia ,
"year" => 2010 ) );
$json_final['child'] = array();
$temp = array();
foreach($array as $arr)
{
$flag=0;
if(!empty($json_final['child']))
{
foreach($json_final['child'] as $name_data)
{
if($name_data['name'] == $arr['year'])
{
$flag=1;
array_push($name_data['child_sub'],array("SI"=>$arr['SI'],"name"=>$arr['name'],"location"=>$arr['location']));
array_push($temp, $name_data);
}
}
}
if($flag == 0)
{
array_push($json_final['child'],array("name"=>$arr['year'],"child_sub"=>array(array("SI"=>$arr['SI'],"name"=>$arr['name'],"location"=>$arr['location']))));
}
}
$json_final['child'] = $temp;
//print_r($json_final);
echo json_encode($json_final,true)
?>