replace values of keys in json1 from Json2 - php

Question

I am very very new to php.. actually i am from java domain. But, i have to do some work in php for integration. My scenario is, i have one json array which will have 4 keys for ex:
one json --> {"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"}.
I will be getting another JSON which ever edited from admin panel. for example if i updated any key, only that key will coming in the
second JSON --> for ex: {"blog_heading":"def"}
Now, i have to replace the value of second json to first json. example output for above scenario like I am very very new to php.. actually i am from java domain. But, i have to do some work in php for integration. My scenario is, i have one json array which will have 4 keys for ex:
output json --> {"id":7,"active":1,"blogId":"abc","blog_heading":"def"}.
So i am trying as below,
$id = json_decode($data_string);
$id2 = json_encode($post);
$id5 = json_decode($id2);
$id6 = array();
foreach ($id as $key => $value)
{
$log->debug($key . ': ' . $value);
if (array_key_exists($key, $id5->data)) {
$log->debug($key . 'element is in the array');
$log->debug($value . 'element is in the array');
//array_push($id5, "apple", "raspberry");
$id3 = array($key => $value);
$id3[$key] = $value;
$log->debug($id3);
}else{
$log->debug($key . 'element is not in the array');
}
}
$id7 = json_encode($id2);
$log->debug($id7);
id5 data is : $id5
DEBUG - 2017-06-05T02:26:20-04:00 - stdClass Object
(
[meta] => stdClass Object
(
[table] => story
[type] => item
)
[data] => stdClass Object
(
[id] => 7
[active] => 1
[blogId] => abc
[blog_heading] => xyz
)
)
==================
Log of $id :
stdClass Object
(
[active] => 1
[blog_heading] => def
[id] => 7
)
Please suggest me how can i achieve this... Anything i am doing wrong here

Answer 1

Please try that:
$j1 = '{"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"}';
$j2 = '{"blog_heading":"def"}';
$result = json_encode(
array_merge(
json_decode($j1, true),
json_decode($j2, true)
)
);

Answer 2

<?php
$json1='{"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"}';
$json2='{"blog_heading":"def"}';
$json1=json_decode($json1);
$json2=json_decode($json2);
foreach ($json1 as $key => $value) {
if($json2->$key){
$json1->$key=$json2->$key;
}
}
$json1=json_encode($json1);
$json2=json_encode($json2);

Answer 3

If you have only one element in array,Do like this
$a = json_decode('{"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"}',true);
$b = json_decode('{"blog_heading":"def"}',true);
$a['blog_heading'] = $b['blog_heading'];
print_r($a);
If you have multiple element like this :
$c = json_decode('[{"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"},
{"id":8,"active":1,"blogId":"abc","blog_heading":"xyz"}]',true);
$d = json_decode('[{"blog_heading":"def"},{"blog_heading":"hello"}]',true);
$return = array();
for ($i=0; $i < count($c); $i++) {
$c[$i]['blog_heading'] = $d[$i]['blog_heading'];
$return[] = $c[$i];
}
print_r($return);
If you want to replace value by specific id
$c = json_decode('[{"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"},
{"id":8,"active":1,"blogId":"abc","blog_heading":"xyz"}]',true);
$d = json_decode('[{"id":7,"blog_heading":"def"},{"id":9,"blog_heading":"hello"}]',true);
$return = array();
for ($i=0; $i < count($c); $i++) {
if($d[$i]['id'] == $c[$i]['id']) {
$c[$i]['blog_heading'] = $d[$i]['blog_heading'];
}
$return[] = $c[$i];
}
print_r($return);
Checking dynamic key value pair :
$c = json_decode('[{"id":7,"active":1,"blogId":"abc","blog_heading":"xyz"},
{"id":8,"active":1,"blogId":"abc","blog_heading":"xyz"}]',true);
$d = json_decode('[{"id":6,"blog_heading":"def"},{"id":9,"blog_heading":"hello"}]',true);
$return = array();
for ($i=0; $i < count($c); $i++) {
$result = array_intersect_key($c[$i], $d[$i]);
foreach ($result as $key => $value) {
$c[$i][$key] = $d[$i][$key];
}
$return[] = $c[$i];
}
print_r($return);
Check demo here