I make a modification in my json with this code:
$id = "hotel_name";
$value ="My Hotel";
$json = json_decode(file_get_contents('datas.json'));
$datas = $json->datas;
foreach ($datas as $category => $data) {
foreach ($data as $element) {
if($element->id==$id) {
$datas->$category->$element->$id = $value;
}
}
}
$newJson = json_encode($element);
file_put_contents('datas.json', $newJson);
But it do not put all the content in it.
How to solve it please ?
My json has the following:
{
"datas": {
"General": [
{
"field": "hotel_name",
"name": "My Hotel name"
}
]
}
}
You are accessing the $element variable, which contains only your inner most data
{
"field": "hotel_name",
"name": "My Hotel name"
}
If you want more of your data, you will have to reassign your outermost $datas variable and children with the newly updated $element variable. I'd recommend creating an empty variable to store the new data instead of altering the original copy.
You should be encoding datas, not just the last element, right?
// before
$newJson = json_encode($element);
// after
$newJson = json_encode($datas);
By the way, you might find it easier to work with the data if you convert it to an array rather than object.
$json = json_decode(file_get_contents('datas.json'), true);
Related
I have a JSON item list in the database that holds the the serial number of different items to be printed according to the order of their serial number. The JSON structure is like this:
{
"item_list": [
{
"item_sl": "1",
"item_print": "flowers"
},
{
"item_sl": "2",
"item_print": "cars"
}
]
}
After retrieving it from the database, I decoded the items in $items_array and then tried to create variables like $item1, $item2 ... which I wanted to assign to the item_print values from the JSON. The same print values have been already defined earlier ($cars, $flowers). Lastly, I wanted to print all of them. The code is:
$cars = 'Tesla is my favorite.';
$flowers = 'I love all flowers.';
$items_array = json_decode($items_data, true);
foreach ($items_array['item_list'] as $item_list) {
foreach ($item_list['item_sl'] as $key => $n) {
${'item'.$n} = $item_list['item_print'][$key];
}
}
$all_print = $item1.' '.$item2;
echo $all_print;
But $all_print is returning null, which tells me my approach is not correct. What am I missing here? What would be a better approach for printing the $cars and $flowers variables according to the serial numbers from the JSON?
First of all, there is no need to use multiple loops when you can achieve the same with a single loop.
Also, there is no need to create variables dynamically and assign values when you can directly decode the JSON and access each value without creating variables and assigning them dynamically.
This should work:
<?php
$items_data = '{
"item_list": [
{
"item_sl": "1",
"item_print": "flowers"
},
{
"item_sl": "2",
"item_print": "cars"
}
]
}';
$items_array = json_decode($items_data, true);
foreach ($items_array['item_list'] as $item) {
${'item' . $item['item_sl']} = $item['item_print'];
}
$all_print = $item1.' '.$item2;
echo $all_print;
?>
Output:
flowers cars
For Your Code above, i don't Really Understand it well, but i think this may help if you are trying to loop items from a json encoded data.
$items_array = json_decode($items_data, true);
foreach ($items_array->item_list as $item_list) {
echo $item_list->item_sl;
echo $item_list->item_print;
}
EDITED
Two Methods to achieve this
First:
$items_array = json_decode($items_data, true);
foreach ($items_array["item_list"] as $item_list) {
echo $item_list["item_sl"];
echo $item_list["item_print"].'<br>';
}
Second:
$items_array = json_decode($items_data);
foreach ($items_array->item_list as $item_list) {
echo $item_list->item_sl;
echo $item_list->item_print;
}
ADDITIONALLY:
if you want to display output based on the user item_print, then you can do this;
$items_array = json_decode($items_data, true);
foreach ($items_array["item_list"] as $item_list) {
if ($item_list["item_print"] == 'cars') {
echo $cars."<br>";
}elseif($item_list["item_print"] == "flowers"){
echo $flowers;
}
}
I am having trouble getting the name of a dynamic key from a JSON string.
I am using PHP
This is a sample of the JSON
{
"_text": "this is a test",
"entities": {
"dynamic_key": [
{
"confidence": 0.99,
"value": "thi is the answer"
}
]
},
"msg_id": "1234532123"
}
I am using foreach to go trough the json key and get the values
foreach ($json as $obj) {
$search_term = $obj->_text;
$msg_id = $obj->msg_id;
}
But I am not sure how to get the value of the "dynamic_key" which changes every time, and because of that I also cannot get the values of "confidence and value" keys.
Any ideas on how to approach this?
Followed #Dimi, solution. This is what I ended up with
$data=json_decode($json,true);
foreach ($data['entities'] as $key=>$val)
{
echo "Entity: $key";
foreach ($data['entities'] as $keys){
$conf = $keys[0]['confidence'];
$answer = $keys[0]['value'];
echo "conf: $conf, answ: $answer";
}
}
Can you provide a couple more examples?
Or try this code and let us know if it breaks
<?php
$json='{
"_text": "this is a test",
"entities": {
"dynamic_key": [
{
"confidence": 0.99,
"value": "thi is the answer"
}
]
},
"msg_id": "1234532123"
}';
$data=json_decode($json,true);
foreach ($data['entities'] as $key=>$val)
{
echo "VALUE IS $key\n values are ";
var_dump($val);
}
Using the data you've shown, there doesn't seem to be an array for the starting JSON.
But with that data the following will use foreach to both fetch the key and the data and then another sub-loop to fetch the confidencevalue...
$search_term = $json->_text;
$msg_id = $json->msg_id;
foreach ( $json->entities as $key => $entities ) {
echo $key.PHP_EOL;
foreach ( $entities as $entity) {
echo $entity->confidence.PHP_EOL;
}
}
If you decode the JSON as an array and if the dynamic key is the only key under entities, then:
$array = json_decode($json, true);
$dynamic = current($array['entities']);
$confidence = $dynamic['confidence'];
$value = $dynamic['value'];
Or shorter:
$confidence = current($array['entities'])['confidence'];
You can probably use reset, current and maybe array_pop etc.
I have a json file with the following syntax:
[
{
"fields": {
"service_number": "service_number",
"physical_address": "physical_address",
"account_id": "account_id",
"contact_id": "contact_id"
},
"someId": "asd23f",
"status": "Active",
"perCode": "1",
"idCode": "0987",
"nextCode": "09"
},
{
"fields": {
"service_number": "service_number",
"physical_address": "physical_address",
"account_id": "account_id",
"contact_id": "contact_id"
},
"someId": "789096",
"status": "Active",
"perCode": "1",
"idCode": "076543",
"nextCode": "09"
}
]
I would like to use a for loop in order to add something like a userID before or after the nextCode. Is there any solution to this?
So far, I tried this:
$data = json_decode($file, true);
foreach ($data as $key => $val)
{
foreach ($val as $key=>$c)
{
if (is_array($c))
continue;
$data .= $data . "user_id:$userId";
}
}
Of course it does not make the trick, any ideas please?
There are a few problems.
First, the foreach loop works with a copy of the array it's iterating, so modifying one of the items there won't change the original array.
Then, your inner foreach loop is overwriting the $key from the outer loop. That would cause problems, but it's okay, because you don't actually need the inner loop.
Finally, after you've decoded the JSON string, $data will be an array, so appending to it with .= won't work, and even if it did, you'd just be sticking something on the end of it rather than at the specific point where your loop is.
Just refer to the specific key you need and set the value there.
$data = json_decode($file, true);
foreach ($data as $key => $val)
{
$data[$key]['user_id'] = $userId;
}
$data = json_encode($data);
Another way which is slightly shorter is pass the value by reference &:
$data = json_decode($file, true);
foreach ($data as &$val) {
$val['user_id'] = $userId;
}
https://3v4l.org/ZF4Ve
This is how you can add an element to a parsed JSON and recostruct it back into a JSON:
// parse the JSON into an array
$data = json_decode($file, true);
foreach ($data as $key => $val)
{
// add the userID to each element of the main array
// it will be inserted after the last element (after nextCode)
$data[$key]['userID'] = 'some-id';
}
// if needed, parse the array back to JSON
$data = json_encode($data);
I explain to you
The following expression converts the information from string to array
$data = json_decode ($file, true);
So in your foreach you only have to add the key
$data = json_decode($file, true);
foreach ($data as $key => $val)
{
foreach ($val as $k=>$c)
{
if (is_array($c))
continue;
$data[$k]['user_id'] = $userId;
}
}
I see everybody answered for array options. I don't see why not using object, though.
I would do it like this:
$data = json_decode($file);
foreach ($data as &$field)
{
$field->userID = $userId;
}
$data = json_encode($data);
I'm pulling data from JSON array in php.
Everything works as expected but somewhere in the loop parts gets lost, it only pulls first one.
Please help.
Thank you very much.
Here is Json:
$json = '
{
"theId": "fB17",
"loadId": "82387T",
"description": "Short description",
"contact": "Name of person",
"contactinfo": "Phone number or email of contact person",
"pickupaddress": "Address",
"parts": [
{ "number": "655-2032B" },
{ "number": "655-2056" },
{ "number": "655-2056" },
{ "number": "300-85091" }
]
}';
PHP code:
$data = json_decode($json);
$theId .= $data->theId;
$loadId .= $data->loadId;
$description .= $data->description;
$contact .= $data->contact;
$contactinfo .= $data->contactinfo;
$pickupaddress .= $data->pickupaddress;
ALL ABOVE GET PULLED FROM JSON AND SAVED PROPERLY
Saving data
$obj = new ElggObject();
$obj->subtype = "load";
$obj->description = strip_tags($description);
$obj->title = $title.$theId.'-'.$loadId;
$obj->contact = $contact;
$obj->contactinfo = $contactinfo;
$obj->pickupaddress = $pickupaddress;
$guid = $obj->save();
Object is saved with basic info
Now going through "parts" data from Json
foreach ($data->parts as $core_title) {
// Getting "parts' value from Json
$titlename = $core_title->number;
//Now need to use that data and find existing entity with that title in Database
$dbprefix = elgg_get_config('dbprefix');
$options['joins'][] = "JOIN {$dbprefix}objects_entity oe ON oe.guid = e.guid";
$options['wheres'][] = "oe.title = '$titlename'";
$options['types'] = array('object');
$options['subtypes'] = array('core');
$options['limit'] = 1;
$entity = elgg_get_entities($options);
// I got that entity that matches the title
//Now get GUID of the entity
foreach ($entity as $o) {
$boxg = $o->guid;
}
// It works I get the GUID as $boxg but now need to save EACH $data->parts as annotation to database
$obj->annotate('cores', $boxg);
}
IT only grabs first one fron Json ( 655-2032B )and saves only that one.
If I do this it saves each $data->parts value not just first one:
foreach ($data->parts as $core_title) {
$titlename = $core_title->number;
$obj->annotate('cores', $titlename);
}
This code makes no sense:
//Now get GUID of the entity
foreach ($entity as $o) {
$boxg = $o->guid;
}
It goes through all items in $entity and keeps overwriting $boxg value without actually doing anything with the value.
The result of this foreach loop is that $boxg holds the GUID of the last item in $entity and only then this one single value used to annotate:
$obj->annotate('cores', $boxg);
Is this what you really wanted to do? Shouldn't the annotate method be used inside the foreach loop?
Apart from that it's hard to give you a clear answer because your code is rather obscure and not well explained.
Figured it out finally.
It was not foreach but what was in it.
Ended up making function that does database query to find existing entity with that title.
This is what I ended up with.
Thanks everyone for the help.
foreach ($data->parts as $core_title) {
$titlename = $core_title->number;
$entity = get_object_by_title('core',$titlename);
foreach ($entity as $o) {
$coreguidd = $o->guid;
$obj->annotate('cores', $coreguidd);
}
}
`{
"student": [{
"name": "Alice",
"rno": "187654"
}]
}`
I am trying to get the value of rno using PHP code
`$data = json_decode($json, true);
foreach ($data as $item) {
$name = $item['name'] ;
$number= $item['rno'] ;
}`
#Sahil Gulati's code is more prefect and right way to parse the json in php
here is an other way to parse the json data in php
<?php
$data = json_decode($json, true);
foreach ($data as $item) {
foreach ($item as $val) {
echo $name = $val['name'];
echo $number = $val['rno'];
}
}
?>
the above code that i have shared you can understand easily. but after learning that how to parse json data in php you should use #Sahil Gulati's mathod.
Change this to:
foreach ($data as $item)
This:
foreach ($data["student"] as $item)
Try code snippet here
PHP code:
<?php
ini_set('display_errors', 1);
$data = json_decode($json, true);
foreach ($data["student"] as $item)
{
$name = $item['name'];
$number = $item['rno'];
}
You should take a closer look at the structure of the json encoded data. That helps to implement a clean iteration:
<?php
$input = <<<JSON
{
"student": [{
"name": "Alice",
"rno": "187654"
}]
}
JSON;
$data = json_decode($input);
$output = [];
array_walk($data->student, function($entry) use (&$output) {
$output[] = $entry->rno;
});
print_r($output);
The output of above code obviously is:
Array
(
[0] => 187654
)
The output format has been chosen as an array, since the json structure suggests that multiple students can be contained.
If you are only directly interested in the rno property of the first entry in the student array, then you can access it directly:
<?php
$input = <<<JSON
{
"student": [{
"name": "Alice",
"rno": "187654"
}]
}
JSON;
$data = json_decode($input);
var_dump($data->student[0]->rno);
The output of that variant obviously is:
string(6) "187654"