Get value from JSON and display it (foreach command) in PHP - php

Hello I've been trying to solve this by myself for a few hours now, with zero luck. I'm trying to use the foreach command in php to display a decoded value from json.
{
-car_data: {
car_id: "87",
car_cost: "62000",
So let's say I want to display the value of car_id, then below that the value of car_cost.
I need to do this using the foreach command. Please briefly explain the process. I'd greatly appreciate it!

It's not clear exactly what you're asking...
If you have a JSON object and need to do something with it server side it is completely different to if you have a JSON object and want to do something with it on the webpage.
N.B.
Your JSON object is malformed there shouldn't be a - in the names.
JSON Object
Made on the client side will look something like:
var cars = {car_data: {car_id: 87, car_cost: 62000}};
Alternatively, server side, you need to convert it to a PHP readable format:
$cars = json_decode('{"car_data":{"car_id":87,"car_cost":62000}}');
JavaScript - Client Side
for(key in cars.car_data){
console.log(key + " => " + cars.car_data[key]);
}
PHP - Server Side
foreach($cars->car_data as $key => $value){
echo "{$key} => {$value}\n";
}

$decoded = json_decode($json);
foreach($decoded->cars_data as $car){
echo $car->car_cost;
}

Related

Echo/return an array in php

Im trying to query a database from a php file then return the results (userLOC of each row) to the calling Jquery function.
Calling Jquery:
$.post(url, data, function (data)
{
alert(data);
})
relavent PHP:
$sql = "Select * from location";
$result = mysql_query($sql);
$stack = array();
while($row = mysql_fetch_array($result))
{
array_push($stack, $row["userLOC"]);
}
return $stack;
The problem is that I cant return it correctly, if I "echo $stack" it does not work it says Im trying to convert the array to string. If I "echo $stack[0]" it will give me the first result in the array correctly so I know the values are being stored correctly (as are $stack[1], etc.) but this only sends the one value back. And if I "return $stack" as pictured nothing is alerted because nothing is echoed. How would I go about getting the whole array back so that I could iterate through and use them on the jquery side?
In PHP
$foo = array();
echo $foo;
will produce the literal string Array as output.
You need to convert your array into a string. Since you're dealing with a Javascript target, use JSON as the perfect means of doing so:
$foo = array('a', 'b', 'c', 'd', 'e');
echo json_encode($foo);
Then in your JS code:
$.get(...., function (data) {
alert(data[1]); // spits out 'b'
});
Just remember to tell jquery that you're expecting JSON output.
You need to wrap (serialize) the data in a way that can be transported to the client via HTTP and used to get the original data.
Usual container formats are XML and JSON. JSON is well suited for usage in JavaScript, so use the PHP function json_encode() and echo the result.
Youll want to use JSON!
Client-side:
jQuery.post(url, data, function( data ) {
//Data is already converted from JSON
}, "json");
Server-side:
return json_encode($stack);
Explanation
Hope this helps!
echo json_encode($stack); can help you
at jquery side use jQuery.parseJSON()
You need to convert the array to a JSON object like this : return json_encode($stack);
Just convert your array it to a JSON object and return it back to your JavaScript:
return json_encode($stack);
As others have said, you may wish to wrap the output using something like json:
echo json_encode($stack);
However, if you aren't looking for an output with the complexity of JSON formatting, you could just use implode() to output a comma separated list:
echo implode(',',$stack);

Highchart data parsed after ajax answer

I received from a jquery ajax function a response like :
["{y:55,color:'red'}", "{y:21}", "{y:12}", "{y:6}", "{y:3}", "{y:3}"]
In my PHP code, I encode via json_encode in an array :
foreach($pp as $value){
$tmp[]='{y:'.round(100*$pp/$sum_pp,0).'}';
}
echo json_encode(array("tableau"=>$tmp));
I'd like to have this, to be used in my Highchart graph :
[{y:55,color:'red'}, {y:21}, {y:12}, {y:6}, {y:3}, {y:3}]
How do I have to format my array to graph my answer ? I do this way to be able to change color on one column in the serie.
Thanks for your time.
If you have the possibility to change the PHP code I would opt to output something similar to the series object used in Highcharts, see http://api.highcharts.com/highcharts#series.
That is an object which looks like this:
{
data: [y1, y2, y3],
color: '#FF0000'
}
That would make your PHP code look like this:
foreach($pp as $value){
$tmp[] = round(100*$pp/$sum_pp,0);
}
echo json_encode(array(
"data" => $tmp,
"color" => '#FF0000'
));
On a side note, filling $tmp like you did in the question is bad. A better way would be:
foreach($pp as $value){
$tmp[] = array('y' => round(100*$pp/$sum_pp,0));
}
echo json_encode(array("data"=>$tmp));
As this will create a "propper" object when parsed in your Javascript. Both examples above in my code will produce something you can use directly in Highcharts. Please note that the series parameter takes an array of series. So in your javascript you would have to do:
series: [
data: response
]
Where response is the is the the output from the json_encode in you PHP script.

Ajax : How to Loop through Huge JSON data

I receive the below Json Data in an ajax response... I dont know how to traverse it I wana loop through it and make an array out of it, Which I will gonna be using in the HTML DOM also I wana Cache this data for No More Ajax requests if data is already available...
How Can I do that,
I have Tried to do it with $.each(data, function(key,value){ ---- }). But the problem is looping through the data I wanna put a for Loop and Inside it I wanna Populate some other array or object...
Does that Make any sense, Can we do that?
{"CountryCode":"ABW","Language":"Dutch"}{"CountryCode":"ABW","Language":"English"}{"CountryCode":"ABW","Language":"Papiamento"}{"CountryCode":"ABW","Language":"Spanish"}{"CountryCode":"AFG","Language":"Balochi"}{"CountryCode":"AFG","Language":"Dari"}{"CountryCode":"AFG","Language":"Pashto"}{"CountryCode":"AFG","Language":"Turkmenian"}{"CountryCode":"AFG","Language":"Uzbek"}{"CountryCode":"AGO","Language":"Ambo"}{"CountryCode":"AGO","Language":"Chokwe"}{"CountryCode":"AGO","Language":"Kongo"}{"CountryCode":"AGO","Language":"Luchazi"}{"CountryCode":"AGO","Language":"Luimbe-nganguela"}{"CountryCode":"AGO","Language":"Luvale"}{"CountryCode":"AGO","Language":"Mbundu"}{"CountryCode":"AGO","Language":"Nyaneka-nkhumbi"}{"CountryCode":"AGO","Language":"Ovimbundu"}{"CountryCode":"AIA","Language":"English"}{"CountryCode":"ALB","Language":"Albaniana"}{"CountryCode":"ALB","Language":"Greek"}{"CountryCode":"ALB","Language":"Macedonian"}{"CountryCode":"AND","Language":"Catalan"}{"CountryCode":"AND","Language":"French"}{"CountryCode":"AND","Language":"Portuguese"}{"CountryCode":"AND","Language":"Spanish"}{"CountryCode":"ANT","Language":"Dutch"}{"CountryCode":"ANT","Language":"English"}{"CountryCode":"ANT","Language":"Papiamento"}{"CountryCode":"ARE","Language":"Arabic"}{"CountryCode":"ARE","Language":"Hindi"}{"CountryCode":"ARG","Language":"Indian Languages"}{"CountryCode":"ARG","Language":"Italian"}{"CountryCode":"ARG","Language":"Spanish"}{"CountryCode":"ARM","Language":"Armenian"}{"CountryCode":"ARM","Language":"Azerbaijani"}{"CountryCode":"ASM","Language":"English"}{"CountryCode":"ASM","Language":"Samoan"}{"CountryCode":"ASM","Language":"Tongan"}{"CountryCode":"ATG","Language":"Creole English"}{"CountryCode":"ATG","Language":"English"}{"CountryCode":"AUS","Language":"Arabic"}{"CountryCode":"AUS","Language":"Canton Chinese"}{"CountryCode":"AUS","Language":"English"}{"CountryCode":"AUS","Language":"German"}{"CountryCode":"AUS","Language":"Greek"}{"CountryCode":"AUS","Language":"Italian"}{"CountryCode":"AUS","Language":"Serbo-Croatian"}{"CountryCode":"AUS","Language":"Vietnamese"}{"CountryCode":"AUT","Language":"Czech"}{"CountryCode":"AUT","Language":"German"}{"CountryCode":"AUT","Language":"Hungarian"}{"CountryCode":"AUT","Language":"Polish"}{"CountryCode":"AUT","Language":"Romanian"}{"CountryCode":"AUT","Language":"Serbo-Croatian"}{"CountryCode":"AUT","Language":"Slovene"}{"CountryCode":"AUT","Language":"Turkish"}{"CountryCode":"AZE","Language":"Armenian"}{"CountryCode":"AZE","Language":"Azerbaijani"}{"CountryCode":"AZE","Language":"Lezgian"}{"CountryCode":"AZE","Language":"Russian"}{"CountryCode":"BDI","Language":"French"}{"CountryCode":"BDI","Language":"Kirundi"}{"CountryCode":"BDI","Language":"Swahili"}{"CountryCode":"BEL","Language":"Arabic"}{"CountryCode":"BEL","Language":"Dutch"}{"CountryCode":"BEL","Language":"French"}{"CountryCode":"BEL","Language":"German"}{"CountryCode":"BEL","Language":"Italian"}{"CountryCode":"BEL","Language":"Turkish"}{"CountryCode":"BEN","Language":"Adja"}{"CountryCode":"BEN","Language":"Aizo"}
Your problem can be solved in two steps:
1) convert your json data to a php String
2) iterate over that array:
step 1) convert to array
$arr = json_decode($jsondata);
step 2) iterate over array
arrayRecurssive($arr);
function arrayRecurssive($arr){
foreach($arr as $key=>$val){
if(is_array($val)){
echo "$key\n";
arrayRecurssive($val);
}else{
echo "$key\n";
echo "$val\n";
}
}
}
in my example above im using '\n' as my new line, but that may as well be <br/>. further formatting of the output is left as an exercise for the coder :-)
The json data appears to be badly formatted. It should be:
[{"CountryCode":"ABW","Language":"Dutch"},{"CountryCode":"ABW","Language":"English"},{"CountryCode":"ABW","Language":"Papiamento"},{"CountryCode":"ABW","Language":"Spanish"},{"CountryCode":"AFG","Language":"Balochi"},{"CountryCode":"AFG","Language":"Dari"},{"CountryCode":"AFG","Language":"Pashto"},{"CountryCode":"AFG","Language":"Turkmenian"},{"CountryCode":"AFG","Language":"Uzbek"},{"CountryCode":"AGO","Language":"Ambo"},{"CountryCode":"AGO","Language":"Chokwe"},{"CountryCode":"AGO","Language":"Kongo"},{"CountryCode":"AGO","Language":"Luchazi"},{"CountryCode":"AGO","Language":"Luimbe-nganguela"},{"CountryCode":"AGO","Language":"Luvale"},{"CountryCode":"AGO","Language":"Mbundu"},{"CountryCode":"AGO","Language":"Nyaneka-nkhumbi"},{"CountryCode":"AGO","Language":"Ovimbundu"},{"CountryCode":"AIA","Language":"English"},{"CountryCode":"ALB","Language":"Albaniana"},{"CountryCode":"ALB","Language":"Greek"},{"CountryCode":"ALB","Language":"Macedonian"},{"CountryCode":"AND","Language":"Catalan"},{"CountryCode":"AND","Language":"French"},{"CountryCode":"AND","Language":"Portuguese"},{"CountryCode":"AND","Language":"Spanish"},{"CountryCode":"ANT","Language":"Dutch"},{"CountryCode":"ANT","Language":"English"},{"CountryCode":"ANT","Language":"Papiamento"},{"CountryCode":"ARE","Language":"Arabic"},{"CountryCode":"ARE","Language":"Hindi"},{"CountryCode":"ARG","Language":"Indian Languages"},{"CountryCode":"ARG","Language":"Italian"},{"CountryCode":"ARG","Language":"Spanish"},{"CountryCode":"ARM","Language":"Armenian"},{"CountryCode":"ARM","Language":"Azerbaijani"},{"CountryCode":"ASM","Language":"English"},{"CountryCode":"ASM","Language":"Samoan"},{"CountryCode":"ASM","Language":"Tongan"},{"CountryCode":"ATG","Language":"Creole English"},{"CountryCode":"ATG","Language":"English"},{"CountryCode":"AUS","Language":"Arabic"},{"CountryCode":"AUS","Language":"Canton Chinese"},{"CountryCode":"AUS","Language":"English"},{"CountryCode":"AUS","Language":"German"},{"CountryCode":"AUS","Language":"Greek"},{"CountryCode":"AUS","Language":"Italian"},{"CountryCode":"AUS","Language":"Serbo-Croatian"},{"CountryCode":"AUS","Language":"Vietnamese"},{"CountryCode":"AUT","Language":"Czech"},{"CountryCode":"AUT","Language":"German"},{"CountryCode":"AUT","Language":"Hungarian"},{"CountryCode":"AUT","Language":"Polish"},{"CountryCode":"AUT","Language":"Romanian"},{"CountryCode":"AUT","Language":"Serbo-Croatian"},{"CountryCode":"AUT","Language":"Slovene"},{"CountryCode":"AUT","Language":"Turkish"},{"CountryCode":"AZE","Language":"Armenian"},{"CountryCode":"AZE","Language":"Azerbaijani"},{"CountryCode":"AZE","Language":"Lezgian"},{"CountryCode":"AZE","Language":"Russian"},{"CountryCode":"BDI","Language":"French"},{"CountryCode":"BDI","Language":"Kirundi"},{"CountryCode":"BDI","Language":"Swahili"},{"CountryCode":"BEL","Language":"Arabic"},{"CountryCode":"BEL","Language":"Dutch"},{"CountryCode":"BEL","Language":"French"},{"CountryCode":"BEL","Language":"German"},{"CountryCode":"BEL","Language":"Italian"},{"CountryCode":"BEL","Language":"Turkish"},{"CountryCode":"BEN","Language":"Adja"},{"CountryCode":"BEN","Language":"Aizo"}]
You can then simply assign that to an array. For example:
var countries = $.parseJSON('[{"CountryCode":"ABW","Language":"Dutch"},{"CountryCode":"ABW","Language":"English"},{"CountryCode":"ABW","Language":"Papiamento"},{"CountryCode":"ABW","Language":"Spanish"},{"CountryCode":"AFG","Language":"Balochi"},{"CountryCode":"AFG","Language":"Dari"},{"CountryCode":"AFG","Language":"Pashto"},{"CountryCode":"AFG","Language":"Turkmenian"},{"CountryCode":"AFG","Language":"Uzbek"},{"CountryCode":"AGO","Language":"Ambo"},{"CountryCode":"AGO","Language":"Chokwe"},{"CountryCode":"AGO","Language":"Kongo"},{"CountryCode":"AGO","Language":"Luchazi"},{"CountryCode":"AGO","Language":"Luimbe-nganguela"},{"CountryCode":"AGO","Language":"Luvale"},{"CountryCode":"AGO","Language":"Mbundu"},{"CountryCode":"AGO","Language":"Nyaneka-nkhumbi"},{"CountryCode":"AGO","Language":"Ovimbundu"},{"CountryCode":"AIA","Language":"English"},{"CountryCode":"ALB","Language":"Albaniana"},{"CountryCode":"ALB","Language":"Greek"},{"CountryCode":"ALB","Language":"Macedonian"},{"CountryCode":"AND","Language":"Catalan"},{"CountryCode":"AND","Language":"French"},{"CountryCode":"AND","Language":"Portuguese"},{"CountryCode":"AND","Language":"Spanish"},{"CountryCode":"ANT","Language":"Dutch"},{"CountryCode":"ANT","Language":"English"},{"CountryCode":"ANT","Language":"Papiamento"},{"CountryCode":"ARE","Language":"Arabic"},{"CountryCode":"ARE","Language":"Hindi"},{"CountryCode":"ARG","Language":"Indian Languages"},{"CountryCode":"ARG","Language":"Italian"},{"CountryCode":"ARG","Language":"Spanish"},{"CountryCode":"ARM","Language":"Armenian"},{"CountryCode":"ARM","Language":"Azerbaijani"},{"CountryCode":"ASM","Language":"English"},{"CountryCode":"ASM","Language":"Samoan"},{"CountryCode":"ASM","Language":"Tongan"},{"CountryCode":"ATG","Language":"Creole English"},{"CountryCode":"ATG","Language":"English"},{"CountryCode":"AUS","Language":"Arabic"},{"CountryCode":"AUS","Language":"Canton Chinese"},{"CountryCode":"AUS","Language":"English"},{"CountryCode":"AUS","Language":"German"},{"CountryCode":"AUS","Language":"Greek"},{"CountryCode":"AUS","Language":"Italian"},{"CountryCode":"AUS","Language":"Serbo-Croatian"},{"CountryCode":"AUS","Language":"Vietnamese"},{"CountryCode":"AUT","Language":"Czech"},{"CountryCode":"AUT","Language":"German"},{"CountryCode":"AUT","Language":"Hungarian"},{"CountryCode":"AUT","Language":"Polish"},{"CountryCode":"AUT","Language":"Romanian"},{"CountryCode":"AUT","Language":"Serbo-Croatian"},{"CountryCode":"AUT","Language":"Slovene"},{"CountryCode":"AUT","Language":"Turkish"},{"CountryCode":"AZE","Language":"Armenian"},{"CountryCode":"AZE","Language":"Azerbaijani"},{"CountryCode":"AZE","Language":"Lezgian"},{"CountryCode":"AZE","Language":"Russian"},{"CountryCode":"BDI","Language":"French"},{"CountryCode":"BDI","Language":"Kirundi"},{"CountryCode":"BDI","Language":"Swahili"},{"CountryCode":"BEL","Language":"Arabic"},{"CountryCode":"BEL","Language":"Dutch"},{"CountryCode":"BEL","Language":"French"},{"CountryCode":"BEL","Language":"German"},{"CountryCode":"BEL","Language":"Italian"},{"CountryCode":"BEL","Language":"Turkish"},{"CountryCode":"BEN","Language":"Adja"},{"CountryCode":"BEN","Language":"Aizo"}]');
alert(countries.length);

parse GeoJson String in PHP

I want to get polygon coordinates from below String.
{"polygon":{"type":"Feature","properties":[],"geometry":{"type":"Polygon","coordinates":[[[-7302732.4720101,6527844.6333235],[-3193477.8319711,6606116.1502766],[-5111129.9973226,5001550.0527375],[-6637424.5779086,4884142.7773079],[-7772361.5737289,5158093.0866438],[-7302732.4720101,6527844.6333235]]]},"crs":{"type":"name","properties":{"name":"urn:ogc:def:crs:OGC:1.3:CRS84"}}}}
This is GeoJson string that i decode to array with below code:
$polygon = CJSON::decode($str);
when i want to get polygon i get error!
$var= $polygon->polygon;
or with below code:
$polygon = CJSON::decode($str,true);
$var = $polygon['polygon'];
although for getting coordinates:
foreach($polygon as $key=>$value)
$coordinates = $value['coordinates'];
or
$coordinates = $value[coordinates];
how can i get coordinates from geojson that i send from javascript to php for saving on postgresql with postgis?
$polygon->polygon->geometry->coordinates[0]
or
$polygon['polygon']['geometry']['coordinates'][0]
what you have is a multidimensional array/object not sure which its being output to when decoded in your case as it appears you have a class doing it I would have just used json_decode, but anyway. Yea from the looks of it, polygon is the main object, then in it is geometry which is an object that has type and coordinates, and then coordinates has multiple objects/arrays in it.
the above samples if I typed them right will show the first set of coordinates in that object. Of course you could run it through a loop ie:
In the case that it is an object assuming your Class decodes as an object and not an array. Not exactly sure what $polygon = CJSON::decode($str,true); does. But if its anything like json_decode() then you should be all set.
This is my method of breaking down the object as you present here, its worth noting you may want to check counts, and see if the object is set first, or if the property exists in the object to prevent other means of the code breaking down the road. But what I have here is just pure example at its core, it will server its purpose though. But will not error handle which is why I say you may want to elaborate further on it doing those checks.
Anyway heres my code:
<?php
$str = '{"polygon":{"type":"Feature","properties":[],"geometry":{"type":"Polygon","coordinates":[[[-7302732.4720101,6527844.6333235],[-3193477.8319711,6606116.1502766],[-5111129.9973226,5001550.0527375],[-6637424.5779086,4884142.7773079],[-7772361.5737289,5158093.0866438],[-7302732.4720101,6527844.6333235]]]},"crs":{"type":"name","properties":{"name":"urn:ogc:def:crs:OGC:1.3:CRS84"}}}}';
$polygon = json_decode($str);
echo'<pre>';print_r($polygon);echo'</pre>';
$set = 1;
foreach($polygon->polygon->geometry->coordinates[0] as $coordinates)
{
echo 'Set '.$set.': ';$set++;
echo $coordinates[0].','.$coordinates[1].'<br>';
}
?>
see it in action http://7pz.net/geojson-parse.php (scroll to the bottom)
This should give you an array of all the coordinates and print them out line by line:
$string = '{"polygon":{"type":"Feature","properties":[],"geometry":{"type":"Polygon","coordinates":[[[-7302732.4720101,6527844.6333235],[-3193477.8319711,6606116.1502766],[-5111129.9973226,5001550.0527375],[-6637424.5779086,4884142.7773079],[-7772361.5737289,5158093.0866438],[-7302732.4720101,6527844.6333235]]]},"crs":{"type":"name","properties":{"name":"urn:ogc:def:crs:OGC:1.3:CRS84"}}}}';
$json = json_decode($string);
$coords_array = $json->polygon->geometry->coordinates[0];
foreach($coords_array as $c_a) {
echo $c_a[0] . "," .$c_a[1] . "<br>";
}
Access with:
$coords_array[0];
$coords_array[1];
$coords_array[2];
etc.
Basically you can turn the JSON string into an object and access each element with the -> notation.
I usally use a site called http://jsonviewer.stack.hu/ to decode JSON and find the path I need, then simply write them out as they appear, as in as in the above - $json->polygon->geometry->coordinates;.
Try it out yourself on the site.

question about php decode JSON

I still have some question about php decode JSON.
the JSON return like this.
all({"Total":30,"Debug":null,"Documents":[
{
"DocTitle":"Image: A municipal police officer takes positio",
"Docmultimedia":[
{
"DocExpire":"2/7/2011 1:39:02 PM"
}
]
}
...]
});
this is my php code:
foreach ($data->Documents as $result) {
echo htmlspecialchars($result->DocTitle).'<br />';
if(!empty($result->Docmultimedia)){
echo htmlspecialchars($result->Docmultimedia->DocExpire).'<br />';
}
}
It return Warning: Invalid argument supplied for foreach().
and echo htmlspecialchars($result->Docmultimedia->DocExpire), is it write right? Thanks all.
Precondition:
The question is based on an MSNBC api (http://api.msnbc.msn.com/documents/GetDocuments?keyword=usa&jsonp=all)
Answer:
API Call
You should call the API without the trailing &jsonp=all, this will make the json evaluateable
API Result
MSN returns some values with NaN, NaN is no valid JSON as JSONLint proved.
Result Digesting
I provide a working example on GIST for digesting.
Docmultimedia is an array, as indicated by "Docmultimedia": [ { ... } ]
you have to call $result->Docmultimedia[0]->DocExpire to retrieve it. alternatively iterate over it.
I noticed that in the APIs result no Docmultimedia occurs ever, instead DocExpire is an property of the document. Retrieve it via $result->DocExpire.
First, what you are receiving is JSONP, not pure JSON. In order to decode the JSON, you have to remove, all(...); first:
$data = trim($json, 'all();');
Second, you need to decode JSON. PHP does not do this automatically:
$data = json_decode($data);
Now you should be abel to do:
foreach($data->Documents as $result) {
// something
}
DEMO

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