JSON arrays using PHP

Question

I'm having an array "pollAnswers" which displays:

Array
(
 [0] => Sachin
 [1] => Dhoni
)

in PHP and I want it to display as:

"pollAnswers":[
 {"pollAnswersID":0, "pollAnswer":"Sachin"}, 
 {"pollAnswersID":1, "pollAnswer":"Dhoni"}
]

in JSON output.

I've tried using array_fill_keys and array_flip but that's not solution for this. It seems I need to split the array_keys and array_values and then do some concatenation to get this, but I'm stuck here!

• Murad Hasan: you have to re-design your array.

Answer 1

Online check link

Try this

$arr = array("Sachin", "Dhoni");
$sub_arr = array();
$final = array();
foreach($arr as $key => $val){
 $sub_arr['pollAnswersId'] = $key;
 $sub_arr['pollAnswer'] = $val;
 $sub_final[] = $sub_arr;
}
$final['pollAnswers'] = $sub_final;
echo json_encode($final);

result

{"pollAnswers":[
 {"pollAnswersId":0,"pollAnswer":"Sachin"},
 {"pollAnswersId":1,"pollAnswer":"Dhoni"}
]}

• Asheesh: You konow Rising Pune Supergiants team Dhoni, Rishi Bro plz accept Answer .
• Asheesh: Frayne relax just kidding in indian style @@

Answer 2

You can try with array_map.

$Array = array('Sachin', 'Dhoni');
$new = array_map(function($v, $k) {
 return ['pollAnswersId' => $k, 'pollAnswer' => $v]; // return the sub-array
}, $Array, array_keys($Array)); // Pass the values & keys
var_dump(json_encode(array("pollAnswers" => $new)));

Output

"{"pollAnswers":[
 {"pollAnswersId":0,"pollAnswer":"Sachin"}, 
 {"pollAnswersId":1,"pollAnswer":"Dhoni"}
]}"

For older versions of PHP.

return array('pollAnswersId' => $k, 'pollAnswer' => $v);

Fiddle

• Sougata Bose: @PedroLobito It would work if you have replaced the shorthand array syntax. Though, OP didn't mention about the version.

Answer 3

<?php
$answerArray = [];
foreach($yourArray as $key => $r) 
 $answerArray[] = ['pollAnswersId' => $key, 'pollAnswer' => $r];
echo json_encode($answerArray);

Here you go.

• Murad Hasan: Not properly created as OP want.

Answer 4

Try this:

$givenArray = array("Sachin","Dhoni");
$answerArray = []; 
foreach($givenArray as $key => $r) 
 $answerArray[] = ['pollAnswersId' => $key, 'pollAnswer' => $r];
echo $out = json_encode(array('pollAnswers' => $answerArray));