how to convert multi array to json multi array - php

Question

i have foreach loop that returns multi-array from the database
and i want to convert this array to multi array in json ,
how to do this ?
php array example
Array
(
[0] => Array
(
[it_code] => 2894
[it_quantity] => 300
[it_price] => 0
[it_notes] =>
)
[1] => Array
(
[it_code] => 2894
[it_quantity] => 284
[it_price] => 0
[it_notes] =>
)
[2] => Array
(
[it_code] => 2894
[it_quantity] => 4
[it_price] => 0
[it_notes] =>
)
[3] => Array
(
[it_code] => 2894
[it_quantity] => 3
[it_price] => 0
[it_notes] =>
)
)
i want returned json to be like this format
[
['2894', 300, 0,''],
['2894', 284, 0,''],
['2894', 4, 0,''],
['2894', 3, 0,''],
['2894', 10, 0, '']
]
my code like this
$this->db->where("it_parent_item", $parent_id);
$this->db->select("d_items.it_code,d_items_type.it_ty_ar_desc,d_items.it_quantity,d_items.it_price,it_notes");
$this->db->join('d_items_type','d_items_type.it_ty_id=d_items.it_type','left');
$this->db->from("d_items");
$result = $this->db->get()->result_array();
echo "<pre>";
print_r($result);
echo "</pre>";

Answer 1

You can use array_values() and array_walk_recursive() to convert integer to string
$newArray = array();
foreach($sourceArray as $element) {
$newArray[] = array_values($element);
}
array_walk_recursive($newArray,
function(&$value, $key){
$value = (string)$value;
});
print_r (json_encode($newArray));

Answer 2

Note that other answers will give null instead of ''.
So, without using array_values, this code returns all values, but in case there is any null, it returns '' instead (as expected in the question):
$arr = array();
foreach($foo as $value){
$tmp = array();
foreach($value as $v){
$tmp[] = $v===null ? '' : $v;
}
$arr[] = $tmp;
}
echo json_encode($arr);
Output:
[[2894,300,0,""],[2894,284,0,""],[2894,4,0,""],[2894,3,0,""]]
[
[2894,300,0,""],
[2894,284,0,""],
[2894,4,0,""],
[2894,3,0,""]
]
This a copyable array:
$foo = array
(
0 => array
(
'it_code' => 2894,
'it_quantity' => 300,
'it_price' => 0,
'it_notes' => null
),
1 => Array
(
'it_code' => 2894,
'it_quantity' => 284,
'it_price' => 0,
'it_notes' => null
),
2 => Array
(
'it_code' => 2894,
'it_quantity' => 4,
'it_price' => 0,
'it_notes' => null
),
3 => Array
(
'it_code' => 2894,
'it_quantity' => 3,
'it_price' => 0,
'it_notes' => null
),
);

Answer 3

Here's the initial array (shown like a PHP array, but the same as your post):
$initialArray = array(
array(
"it_code" => 2894,
"it_quantity" => 300,
"it_price" => 0,
"it_notes" => '',
),
array(
"it_code" => 2894,
"it_quantity" => 284,
"it_price" => 0,
"it_notes" => '',
),
array(
"it_code" => 2894,
"it_quantity" => 4,
"it_price" => 0,
"it_notes" => '',
),
array(
"it_code" => 2894,
"it_quantity" => 3,
"it_price" => 0,
"it_notes" => '',
),
);
You can loop over each element, assigning just the values to a new set of arrays, like this:
$newArray = array();
foreach ($initialArray as $subArray)
{
$newArray[] = array_values($subArray);
}
The resulting array will look like this:
[[2894,300,0,""],[2894,284,0,""],[2894,4,0,""],[2894,3,0,""]]

Answer 4

Looks to me like you want to loop through your array so it's formatted how you want in PHP and then convert that PHP array into JSON:
$dataArray = array(); //The array containing your values
$jsonArray = array(); //The array which will be formatted for json
foreach($dataArray as $value){
$keylessValues = array_values($value);
$jsonArray[] = $keylessValues;
}
$jsonArray = json_encode($jsonArray); //This is now a JSON array storing your values
What we do here is move through the array and then take only the values with array_values() and put them into a new index in our $jsonArray.
Once we have moved through the entire array we can convert our newly formatted and populated array into JSON with json_encode()
It's worth noting that your values that are set as '' will come through as null. If you need those values as '' instead of null have a look at the answer #FirstOne gave.