I'm trying to encode a json string but it keeps returning null. I've tried a few suggestion here on st
$url = "https://www.google.com/finance?output=json&start=0&num=200&noIL=1&q=[currency%20%3D%3D%20%22USD%22%20%26%20%28%28exchange%20%3D%3D%20%22NYSEMKT%22%29%20%7C%20%28exchange%20%3D%3D%20%22NYSEARCA%22%29%20%7C%20%28exchange%20%3D%3D%20%22NYSE%22%29%20%7C%20%28exchange%20%3D%3D%20%22NASDAQ%22%29%29%20%26%20%28change_today_percent%20%3E%3D%20-101%29%20%26%20%28change_today_percent%20%3C%3D%20-3%29%20%26%20%28volume%20%3E%3D%20150001%29%20%26%20%28volume%20%3C%3D%20313940000%29%20%26%20%28last_price%20%3E%3D%2010%29%20%26%20%28last_price%20%3C%3D%20229301%29]&restype=company&ei=T5mTVKG5IYT1igKEoYHQCQ";
$obj = file_get_contents($url);
$obj = json_decode($obj);
var_dump($obj);
JSON doesn't support \x escapes, so it's invalid JSON by definition, hence why json_decode() returns null. Decoding the valid JSON \u0022 works fine.
$url = "https://www.google.com/finance?output=json&start=0&num=200&noIL=1&q=[currency%20%3D%3D%20%22USD%22%20%26%20%28%28exchange%20%3D%3D%20%22NYSEMKT%22%29%20%7C%20%28exchange%20%3D%3D%20%22NYSEARCA%22%29%20%7C%20%28exchange%20%3D%3D%20%22NYSE%22%29%20%7C%20%28exchange%20%3D%3D%20%22NASDAQ%22%29%29%20%26%20%28change_today_percent%20%3E%3D%20-101%29%20%26%20%28change_today_percent%20%3C%3D%20-3%29%20%26%20%28volume%20%3E%3D%20150001%29%20%26%20%28volume%20%3C%3D%20313940000%29%20%26%20%28last_price%20%3E%3D%2010%29%20%26%20%28last_price%20%3C%3D%20229301%29]&restype=company&ei=T5mTVKG5IYT1igKEoYHQCQ";
$obj = file_get_contents($url);
$obj = trim($obj);
$obj = str_replace('\x', '\u00', $obj);
$obj = json_decode($obj,true);
var_dump($obj);
Try this code
<?php
function convert($string) {
return preg_replace_callback('#\\\\x([[:xdigit:]]{2})#ism', function($matches) {
return htmlentities(chr(hexdec($matches[1])));
}, $string);
}
$url = "https://www.google.com/finance?output=json&start=0&num=200&noIL=1&q=[currency%20%3D%3D%20%22USD%22%20%26%20%28%28exchange%20%3D%3D%20%22NYSEMKT%22%29%20%7C%20%28exchange%20%3D%3D%20%22NYSEARCA%22%29%20%7C%20%28exchange%20%3D%3D%20%22NYSE%22%29%20%7C%20%28exchange%20%3D%3D%20%22NASDAQ%22%29%29%20%26%20%28change_today_percent%20%3E%3D%20-101%29%20%26%20%28change_today_percent%20%3C%3D%20-3%29%20%26%20%28volume%20%3E%3D%20150001%29%20%26%20%28volume%20%3C%3D%20313940000%29%20%26%20%28last_price%20%3E%3D%2010%29%20%26%20%28last_price%20%3C%3D%20229301%29]&restype=company&ei=T5mTVKG5IYT1igKEoYHQCQ";
$obj = file_get_contents($url);
$obj = convert($obj);
$obj = json_decode($obj);
echo '<pre>'; print_r($obj); echo '</pre>';
?>
As recommended here (and pointed out by #showdev already, thanks!) you should use their RSS API and parse that as XML instead, because Google does not deem it necessary to honour web standards (here, they fail at JSON; elsewhere, they fail at simple things like SMTP and especially IMAP).
JSON has a very detailed specification, and it is very easy to adhere to in generators. Making JSON parsing strict is recommended for security reasons – especially with external input. So please use Google’s RSS variant.
Related
I am using PHP with cURL to make requests to an API.
The API responds with an encrypted string which I then have to use json_decode on and run it through a pre-defined decrypt method that returns a string.
So I have something like this:
echo $response;
$decodedResponse = json_decode($response, true);
// New instance of Decrypt
$decrypt = new Decrypt();
$decryptedResponse = $decrypt->decrypt($decodedResponse);
echo $decryptedResponse;
Using var_dump($decryptedResponse) yields string(960) but the string looks like a JSON array.
{"Title":"Mr","Forenames":"Steve"}
So what is the best way to rip apart this string so that I can use the variables through an associative array?
I had already tried:
foreach(decryptedResponse as $data)
{
echo $data['Title'];
}
But this outputted nothing on the screen.
Am I misinterpreting the use of json_decode?
As many have stated it seems you have to decode twice, I'll look into this and share my findings.
You need to json_decode again on the decrypt result
$decodedResponse = json_decode($response, true);
// New instance of Decrypt
$decrypt = new Decrypt();
$decryptedResponse = $decrypt->decrypt($decodedResponse);
$decryptedArry = json_decode($decryptedResponse, true);
var_dump($decryptedArry);
echo $decryptedArry['Title'];
As you told Using `var_dump($decryptedResponse)` yields string(960) but the string looks like a JSON means your decrypt duration convert it again json. You can try bellow code it may resolve your issue
$decodedResponse = json_decode($response, true);
// New instance of Decrypt
$decrypt = new Decrypt();
$decryptedResponse = $decrypt->decrypt($decodedResponse);
$decryptedResponse = json_decode($response, true);
foreach(decryptedResponse as $data)
{
echo $data['Title'];
}
The code below shows that the json_decode works like you want it to but it seems like your Decryption class does something weird.
$response = '{"Title":"Mr","Forenames":"Steve"}';
$decodedResponse = json_decode($response, true);
var_dump($decodedResponse);
echo $decodedResponse["Title"];
I have a .txt file called 'test.txt' that is a JSON array like this:
[{"email":"chrono#gmail.com","createdate":"2016-03-23","source":"email"}]
I'm trying to use PHP to decode this JSON array so I can send my information over to my e-mail database for capture. I've created a PHP file with this code:
<?php
$url = 'http://www.test.com/sweeps/test.txt';
$content = file_get_contents($url);
$json = json_decode($content,true);
echo $json;
?>
For some reason, it's not echoing the decoded JSON when I visit my php page. Is there a reason for this and can anyone shed some light? Thanks!
You use echo to print scalar variables like
$x = 'Fred';
echo $x;
To print an array or object you use print_r() or var_dump()
$array = [1,2,3,4];
print_r($array);
As json_decode() takes a JSON string and converts it to a PHP array or object use print_r() for example.
Also if the json_decode() fails for any reason there is a function provided to print the error message.
<?php
$url = 'http://www.test.com/sweeps/test.txt';
$content = file_get_contents($url);
$json = json_decode($content,true);
if ( json_last_error() !== JSON_ERROR_NONE ) {
echo json_last_error_msg();
exit;
}
You'll need to split that json string into two separate json strings (judging by the pastebin you've provided). Look for "][", break there, and try with any of the parts you end up with:
$tmp = explode('][', $json_string);
if (!count($tmp)) {
$json = json_decode($json_string);
var_dump($json);
} else {
foreach ($tmp as $json_part) {
$json = json_decode('['.rtrim(ltrim($json_string, '['), ']').']');
var_dump($json);
}
}
I'm having difficulties grabbing any of the JSON information from this URL.
I've tried other JSON snippets and they seem to work so I'm not sure if it's the way that the URL is structured or something.
Basic example below.
<?php
$json = file_get_contents('http://nhs-sh.cfpreview.co.uk/api/version/fetchLatestData?dataType=Clinics&versionNumber=-1&uuID=website&dt=');
$obj = json_decode($json);
echo "Body: " . $obj->Body;
?>
The link provided starts with
{ data :
which is valid javascript but invalid json. You can test it on http://jsonlint.com. To fix this we can replace the data with "data" :
$json = file_get_contents('http://nhs-sh.cfpreview.co.uk/api/version/fetchLatestData?dataType=Clinics&versionNumber=-1&uuID=website&dt=');
$obj = json_decode($json);
if (json_last_error() !== JSON_ERROR_NONE) { //check if there was an error decoding json
$json = '{ "data" :'. substr(trim($json), 8); // replace the first 8-1 characters with { "data" :
$obj = json_decode($json);
}
print_r($obj->data); //show contents of data
Please note that this fix is dependent on the data source e.g. if they change data to dataset. The correct measure would be to ask the developers to fix their json implementation.
I've got a really weird problem and I can't figure out why.
The situation is quite simple. My Android app uploads JSON data to a php script on my server. Right now I am trying to parse the data.
This is the JSON-Array passed to the script (via httpPost.setEntity ()):
[{"friends_with_accepted":"false","friends_with_synced":"false","friends_with_second_id":"5","friends_with_first_id":"6"}]
This is the php script:
<?php
// array for JSON response
$response = array();
$json = file_get_contents ('php://input');
$jsonArray = json_decode ($json, true);
foreach ($jsonArray as $jsonObject) {
$firstId = $jsonObject['friends_with_first_id'];
$accepted = $jsonObject ['friends_with_accepted'];
$secondId = $jsonObject ['friends_with_second_id'];
$synced = $jsonObject ['friends_with_synced'];
echo "accepted: ".$accepted."synced: ".$synced;
} ?>
And this is the response I get from the script:
accepted: synced: false
Why is the "synced" property correctly passed, but not the "accepted" property??
I can't see the difference. Btw, firstId and secondId are parsed correctly as well.
Okay, i just found the problem:
Instead of
$accepted = $jsonObject ['friends_with_accepted'];
I deleted the space between jsonObject and the bracket
$accepted = $jsonObject['friends_with_accepted'];
I am attempting to write PHP code to interact with JSON output from Mapquest's Open API / Open Street Map service. I have listed it below. I have been using this code in my Drupal 6 implementation. This code returns no output. When I use it, json_last_error() outputs 0.
function json_test_page() {
$url = 'http://open.mapquestapi.com/directions/v1/route?outFormat=json&from=40.037661,-76.305977&to=39.962532,-76.728099';
$json = file_get_contents($url);
$obj = json_decode(var_export($json));
$foo .= $obj->{'fuelUsed'};
$output .= foo;
return $output;
}
You can view the raw JSON output by following the URL. In this function I am expecting to get 1.257899 as my output. I have two questions:
(1) What can I call so I get items out of my array. For instance, how can I get the value represented in JSON "distance":26.923 out of the array?
(2) Is it possible am I running into a recursion limit issue that I've read about in the PHP Manual?
If you read the manual page for json_decode carefully, you'll notice there is a parameter (false by default) that you can pass to have it return an array rather than an object.
$obj = json_decode($json, true);
So:
<?php
function json_test_page() {
$url = 'http://open.mapquestapi.com/directions/v1/route?outFormat=json&from=40.037661,-76.305977&to=39.962532,-76.728099';
$json = file_get_contents($url);
$obj = json_decode($json, true);
//var_dump($obj);
echo $obj['route']['fuelUsed'];
}
json_test_page();
Remove the var_export function from json_decode.
You're trying to convert information about a string to json.
I was able to get the fuelUsed property this way
function json_test_page() {
$url = 'http://open.mapquestapi.com/directions/v1/route?outFormat=json&from=40.037661,-76.305977&to=39.962532,-76.728099';
$json = file_get_contents($url);
$obj = json_decode($json);
return $obj->route->fuelUsed;
}