Hello I am trying to break down JSON data
** {
"message": "gradeExam.php",
"id": "171",
"student_id": "dfd",
"questions": [{
"question_id": "0",
"student_input": "def doubly_"
},
{
"question_id": "1",
"student_input": "asd"
}
]
}**
using PHP
$json = file_get_contents('php://input');
$_POST = json_decode($json, true);
$input = $_POST["questions"];
foreach($input as $questions)
{
$quest_id[] = $questions["question_id"];
$student_input[] = $questions["student_input"];
}
echo $quest_id;
echo $student_input;
BUT keep getting a response of.. ArrayArrayArray[]
I am trying loop and get the data of question_id: 0, student_input: def doubly_, question_id: 1, student_input: asd.
What am I doing wrong?
Everything that you have done is correct except these 2 lines.
echo $quest_id;
echo $student_input;
As $quest_id and $student_input are arrays we cannot use the echo function. Instead, you can use the print_r function as below
print_r($quest_id);
print_r($student_input);
Related
I have multiple JSON files with different structures. What I want to do is to automatically display these JSON outputs with HTML.
Some of my JSON outputs are as follows: (Think of each of these as separate files and need to be processed separately)
{
"parts": [
{
"#attributes": {
"id": "part1"
},
"car": "Peugeot",
"service": 5,
"location": 2996,
"price": "44.95",
"date": "2000-10-01"
},
... other objects
]
}
{
"licenses":[
{
"driver":"John",
"year":26,
"info":null
},
... other objects
]
}
Now, to process these files, I send the page name with GET on PHP and I want the corresponding JSON output to be printed to the screen with HTML as <span>$key</span> -> <span>$value</span>
How can I make this dynamic JSON output read event with PHP? Do I need to create a recursive function?
Because the files have different structures from each other. I hope I was able to explain my problem. Thanks already for yours help.
I suggest the following:
get required JSON file name from GET or POST, for example:
$jsonfilename = $_GET['file'];
The above does not include any security protection! this is a separate topic,
so do some research.
load your json file and parse it:
$json = file_get_contents('/path/'.$jsonfilename);
$data = json_decode($json, true);
read your json data:
foreach ($data as $key=>$value){
echo ''.$key.' -> '.$value.'';
}
A simple example for your PARTS file:
$json = '
{
"parts":
[
{
"#attributes": {
"id": "part1"
},
"car": "Peugeot",
"service": 5,
"location": 2996,
"price": "44.95",
"date": "2000-10-01"
},
{
"#attributes": {
"id": "part2"
},
"car": "Renault",
"service": 8,
"location": 3100,
"price": "99.95",
"date": "2022-03-01"
}
]
}';
$arr = json_decode($json, true);
foreach($arr["parts"] as $part) {
foreach($part as $k => $v){
if($k == "#attributes")
echo "<h1>" . $v["id"] ."</h1>";
else
echo "<span>$k</span> -> <span>$v</span> <br/>";
}
}
This produces:
I;m trying to get data from a website using the following code:
<?php
$url = 'http://services.runescape.com/m=itemdb_oldschool/api/catalogue/detail.json?item=4798';
$content = file_get_contents($url);
var_dump($content);
$json = json_decode($content, true);
var_dump($json);
for ($idx = 0; $idx < count($json); $idx++) {
$obj = (Array)$json[$idx];
echo 'result' . $obj["name"];
}
?>
Which is getting me this result:
string(0) "" NULL
<?php
$url = 'http://services.runescape.com/m=itemdb_oldschool/api/catalogue/detail.json?item=4798';
$content = file_get_contents($url);
echo "<pre>";
//print_r($content);
$data = json_decode($content);
print_r($data); //Show the json decoded data comes form $url
##Parse this array {$data} using foreach loop as your use
?>
There are no numeric keys in the json returned from the url you posted in your question. So iterating through the associative array with numeric keys returns nothing.
This is the structure of the json you are working with:
{
"item": {
"icon": "http://services.runescape.com/m=itemdb_oldschool/5122_obj_sprite.gif?id=4798",
"icon_large": "http://services.runescape.com/m=itemdb_oldschool/5122_obj_big.gif?id=4798",
"id": 4798,
"type": "Default",
"typeIcon": "http://www.runescape.com/img/categories/Default",
"name": "Adamant brutal",
"description": "Blunt adamantite arrow... ouch.",
"current": {
"trend": "neutral",
"price": 529
},
"today": {
"trend": "neutral",
"price": 0
},
"members": "true",
"day30": {
"trend": "negative",
"change": "-9.0%"
},
"day90": {
"trend": "negative",
"change": "-20.0%"
},
"day180": {
"trend": "negative",
"change": "-31.0%"
}
}
}
Try accessing $json["item"]. That should give you something more meaningful to work with. If you want to iterate over the key/value pairs in the item, use a foreach loop:
foreach($json["item"] as $key => $value) {
echo $key . ":";
print_r($value);
}
I can do a var_dump, but when trying to access the values, I am getting errors about the values not being found.
{
"metrics": {
"timers": [
{
"name": "com.android.timer.launchtime",
"startTime": 1232138988989,
"duration_ms": 1900
},
{
"name": "com.android.timer.preroll-load-time",
"startTime": 1232138988989,
"duration_ms": 1000
}
]
}
}
I used the following so far to try and parse it.
$json_file = file_get_contents('test.json');
$json_a = json_decode($json_file,true);
var_dump(json_decode($json_file)); //This works
echo $json_a['name']; //I want to print the name of each (from timers).
Try:
$yourDecodedJSON = json_decode($yourJson)
echo $yourDecodedJSON->metrics->timers[0]->name;
Or you can:
$yourDecodedJSON = json_decode($yourJson, true); // forces array
echo $yourDecodedJSON['metrics']['timers'][0]->name;
In your case, you may want to..
foreach($yourDecodedJSON['metrics']['timers'] as $timer){
echo $timer['name']; echo $timer['duration_ms']; // etc
}
If something fails, use:
echo json_last_error_msg()
To troubleshoot further
You need do it in following manner:-
<?php
$data = '{
"metrics": {
"timers": [
{
"name": "com.android.timer.launchtime",
"startTime": 1232138988989,
"duration_ms": 1900
},
{
"name": "com.android.timer.preroll-load-time",
"startTime": 1232138988989,
"duration_ms": 1000
}
]
}
}';
$new_array = json_decode($data); //convert json data into array
echo "<pre/>";print_r($new_array); //print array
foreach ($new_array->metrics->timers as $new_arr){ // iterate through array
echo $new_arr->name.'<br/>'; // rest you can do also same
}
?>
Output:- https://eval.in/407418
I am accessing an API where the JSON data is returned as below.
{
"name": "",
"count": 4,
"frequency": "",
"version": 3,
"newdata": true,
"lastrunstatus": "success",
"thisversionstatus": "success",
"thisversionrun": "",
"results": {
"collection": [{
"textlink": {
"href": "http://text1.com",
"text": "Text 1"
},
"index": 1,
"url": ""
}, {
"textlink": {
"href": "http://text2.com",
"text": "Text 2"
},
"index": 2,
"url": ""
}, {
"textlink": {
"href": "http://text3.com",
"text": "Text 3"
},
"index": 3,
"url": ""
}, {
"textlink": {
"href": "http://text4.com",
"text": "Text 4"
},
"index": 4,
"url": ""
}]
}}
As you can see the JSON tree returned has multi-step levels. I am wanting to be able to take some of the deeper levels, in PHP, and insert into a database.
Currently I am using this code to try and echo the data (once I am able to I can then work on inserting it to a database no problem)
<?php
$request = "API.REQUEST.NET";
$response = file_get_contents($request);
$results = json_decode($response, TRUE);
foreach($results as $item) {
echo $item->results[0]->collection[0]->textlink[0]->href;
echo "<br>";
echo $item->results->collection['href'];
echo "<br>";
echo $item->results->collection['text'];
}
?>
As you can see above I have tried several ways to access the deeper levels f data that are being displayed but with no avail.
I am currently getting errors of 'trying to get property of a non-object'. How is it possible to reach the data in this array?
try:
echo $results['results']['collection'][0]['textlink']['href'];
$obj = json_decode( $json, true ); foreach ( $obj['key'] as $key => $value ) { echo $value; }
foreach ($response['results']['collection'] as $textlink) {
$row = $textlink['textlink'];
echo $row['href'];
echo "<br>";
echo $row['text'];
echo "<br>";
}
you can do foreach like this, which loops only items in collection
I would suggest to do something like this (According to me, correct way to fetch results from API responses):
<?php
$request = "API.REQUEST.NET";
$response = file_get_contents($request);
$response = json_decode($response);
foreach($response->results->collection as $item) {
echo $item->textlink->href;
echo "<br>";
echo $item->textlink->text;
echo "<br>";
echo $item->index;
echo "<br>";
echo $item->url;
}
?>
I've this JSON string:
$json = '{
"bigprodlist": {
"prods": [
{
"code": 55,
"name": "Comix Book",
"link": "weblink"
},
{
"code": 85,
"name": "IT Book",
"link": "weblink"
},
{
"code": 95,
"name": "Manga Book",
"link": "weblink"
}
}
}';
I'd like to print every single entry on a webpage using php and then save these entries on a mysql db.
In the db there is already a "code", "name" and "link" field..
This is what I've tried without luck (to print the stuff on a page):
$obj = json_decode($json,true);
echo ($obj["bigprodlist"]["prods"][0]["name"]);
Thank you very much for the help
First, fix your JSON missing end bracket that makes JSON decoding fail (add the ] after the prods data ), then expand your echo statement with some foreach loops to get the data printed. This is only a simple example to get you on the right track:
foreach ($obj["bigprodlist"]["prods"] as $p):
echo "<div>";
foreach ($p as $name=>$value):
echo "<span>".$name.": ".$value."</span>";
endforeach;
echo "</div>";
endforeach;
You can then use the same loop procedure to get the data into your DB.
You need to use json_last_error(); http://no1.php.net/manual/en/function.json-last-error.php
Debugging:
$obj = json_decode($json,true);
var_dump($obj, json_last_error());
You are missing a ] :
$json = '{
"bigprodlist": {
"prods": [
{
"code": 55,
"name": "Comix Book",
"link": "weblink"
},
{
"code": 85,
"name": "IT Book",
"link": "weblink"
},
{
"code": 95,
"name": "Manga Book",
"link": "weblink"
}
] //missing!
}
}';
Where did you get json output?
It's invalid:
Parse error on line 18:
... } } }
----------------------^
Expecting ',', ']'
Check your json at http://jsonlint.com/