json_encode function return Braces {} when array is empty in php

Question

I am using json_encode to convert the array to json. But json is giving braces {} if value is blank for some key . I want the value should come null or "" blank. Please help .Below is the code :

<?php
$postData='<Lead>
<General>
<dealer></dealer></General> </Lead>';
 $array_data = json_encode(simplexml_load_string($postData));
$array_data=json_decode($array_data) ;
$dealer=$array_data->General->dealer;
$data=array('dealer'=>$dealer);
echo  $objectJson =json_encode($data);
?>


response is : {"dealer":{}}

You are looking at the wrong place, simplexml_load_string generates empty objects so json_encode() correctly encodes them to {}: eval.in/710579 — jeroen
– jeroen, Commented Jan 6, 2017 at 9:41

Beginner · Accepted Answer · 2017-01-06 09:48:56Z

2

It's because your $dealer is an empty array which in json is same as {}

Use ternary

'dealer'=>((!$dealer) ? $dealer : null)

this means that if $dealer is empty assign a null which will change your empty array or {} in json to a null

$data=array('dealer'=>((!$dealer) ? $dealer : null));

also

echo  $objectJson =json_encode($data);

if you just display it and not use it again in code below avoid declaring it instead just display it

echo json_encode($data);

answered Jan 6, 2017 at 9:48

Beginner

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