When i try to add a JSON Array, it removes the previous array. (PHP) -


edit: trying merge 2 arrays together, saying want add new array json data without removing json data in value.

example: $chatjson = [] has json data in this:

$chatjson = [{"sender":"testing","message":"hi"}]

and want keep data when adds array 

$chatjson = [{"sender":"testing","message":"hi"},{"sender":"testing","message":"message 2!"}]

should support question.

<?php    include '../filter.php';   $chatjson = [];   $sender = securepost($_post["sender"]);   $message = securepost($_post["message"]);    if ($sender || $message) {       $chatarray = array('sender' => $sender, 'message' => $message);       $decodejson = json_decode($chatjson, true);        $merge = array_merge((array)$chatarray, (array)$decodejson);       $chatjson = json_encode($merge);       echo $chatjson;   } ?>

you need change code little bit:-

<?php    include '../filter.php';   $chatjson = array(); // define array   $sender = securepost($_post["sender"]);   $message = securepost($_post["message"]);    if ($sender || $message) {       $chatarray[] = array('sender' => $sender, 'message' => $message); // assign values every time new index.       $decodejson = json_decode($chatjson, true);        $merge = array_merge((array)$chatarray, (array)$decodejson); // push new data       $chatjson = json_encode($merge);       echo $chatjson;   } ?>

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