json encode of multiple arrays using php

Question

I have an arrays like follows:

Array
(
 [option] => nos
 [optioncost] => 10
)
Array
(
 [option] => opts
 [optioncost] => 20
)
Array
(
 [option] => opts
 [optioncost] => 30
)

need to convert this as like the following json format

[{"option":nos,"optioncost":10},{"option":opts,"optioncost":20},{"option":optse,"optioncost":30}]

• Devsi Odedra: you created different array. create single array and push data on different index.
• testmail test: thanks for the reply....i have six different input fileds how to make them as single array
• Syscall: If you have a fixed number of arrays, you can do $arr=[$arr1,$arr2,$arr3];.

Answer 1

Try this code :

 <?php
 $arr = array();
 $arr[] = array('option' => 'nos',
 'optioncost' => 10
 );
 $arr[] = array('option' => 'opts',
 'optioncost' => 20
 );
 $arr[] = array('option' => 'optse',
 'optioncost' => 30
 );
 echo json_encode($arr);
 ?>

Output :

 [{"option":"nos","optioncost":10},{"option":"opts","optioncost":20},{"option":"opts","optioncost":30}]

Hope this helps !

• Pedro Lobito: Why would the OP try your code? You should always provide an explanation whenever possible.

Answer 2

The json example you've provided isn't valid because strings aren't quoted (nos / opts), something you could have easily tested on any online json validator.
You'll need to construct proper arrays - where strings are "quoted" - and use the json_encode() function, i.e.:

$arr1 = ['option' => "nos", 'optioncost' => 10];
$arr2 = ['option' => "opts", 'optioncost' => 20];
$arr3 = ['option' => "opts", 'optioncost' => 30];
echo json_encode([$arr1, $arr2, $arr3]);
# [{"option":"nos","optioncost":10},{"option":"opts","optioncost":20},{"option":"opts","optioncost":30}]

DEMO

---

Note:

Strings need to be quoted, but floats, ints or bools don't.