I'm working on a side project and at its core, I need to get a foursquare json feed into an array that i can loop through. My code is below and results in the following error:
Warning: Invalid argument supplied for foreach() in /homepages/7/d346835943/htdocs/dealrub/results.php on line 56
Here is an example of the json feed that i am correctly acquiring:
$jsonurl = "http://api.foursquare.com/v2/venues/search?ll=".$lat.",".$lon."&limit=100";
$json = file_get_contents($jsonurl,0,null,null);
$json_output = json_encode($json, true);
foreach ( $json_output->response->groups[0]->items as $items )
{
echo "{$items->name}\n";
}
Any help as to what i'm doing wrong would be greatly appreciated. I left the jsonurl without my api key, but it is successfully returning the json results.
You have to use json_decode.
Check whether $json_ouput is not empty.
You are passing true as second argument to json_decode (assuming you have it right) which means that it returns an associative array.
Either omit that:
$json_output = json_decode($json);
or access items as array:
foreach ( $json_output['response']['groups'][0]['items'] as $items )
You're using json_encode on a string that is already in json. Try json_decode instead ;)
Related
I want to decode json file resulted from DuckDuckGo API into a readeble html or PHP string.
I try with PHP json_decode, but nothing:
$object = json_decode($string, true);
echo $object['RelatedTopics']['Result'];
Any ideas?
From the JSON responde you posted, it is possible to see that RelatedTopics is an array. So you must first access an element of this array to then access the Result key:
echo $object['RelatedTopics'][0]['Result'];
Or in a loop just to test:
foreach ($object['RelatedTopics'] as $rel)
echo $rel['Result'];
Am trying to get more familiar with JSON decoding, so here's what I got:
$json = '{"id":[{"tier": "SILVER"}]}';
$array = json_decode($json, true);
var_dump($array["id"]['tier']);
I am trying to fetch the 'tier', but it's resulting the following error: Notice: Undefined index: tier
I have tried certain things such as var_dump($array['tier']);, var_dump($array[0]['tier']); but nothing seems to work and I can not find a lot of information about this.
After the Noticeit also returns NULL. Any help is appreciated.
The id key in the resulting array will contain an numerically indexed array of arrays.
To access, you need to specify the key in that array, in this case 0 as there is only a single element
var_dump($array["id"][0]['tier']);
If you where to decode to an object rather than forcing an associate array (by omitting the true in the json_decode call), you might find the syntax a little easier to read:
$json = '{"id":[{"tier": "SILVER"}]}';
$obj = json_decode($json);
var_dump($obj->id[0]->tier);
You need to access the first item [0]on the array ["id"]
Try this:
$json = '{"id":[{"tier": "SILVER"}]}';
$array = json_decode($json, true);
var_dump($array["id"][0]['tier']);
//string(6) "SILVER"
Here is the JSON response in which I need your help.
I need to access "age" key inside 'attribute'.
I really tried every possible ways that i could get. So can u please try to help me out :)
Another option, is that when you call json_decode by default you get a php object, however, if you add an optional boolean parameter you get an array which can be easier in situations like this to access nested elements.
// $data is the original json string
$json = json_decode($data, true);
print_r($json);
There are 2 ways I can see checking the json you just provided, one is by iterating the array, and the other one is accessing it by index:
$json = json_decode($response);
foreach ($json as $item) {
$value = $item->item->attribute->age->value;
var_dump($value);
}
the other way:
$value = $json[0]->item->attribute->age->value;
I've have this list of products in JSON that needs to be decoded:
"[{"productId":"epIJp9","name":"Product A","amount":"5","identifier":"242"},{"productId":"a93fHL","name":"Product B","amount":"2","identifier":"985"}]"
After I decode it in PHP with json_decode(), I have no idea what kind of structure the output is. I assumed that it would be an array, but after I ask for count() it says its "0". How can I loop through this data so that I get the attributes of each product on the list.
Thanks!
To convert json to an array use
json_decode($json, true);
You can use json_decode() It will convert your json into array.
e.g,
$json_array = json_decode($your_json_data); // convert to object array
$json_array = json_decode($your_json_data, true); // convert to array
Then you can loop array variable like,
foreach($json_array as $json){
echo $json['key']; // you can access your key value like this if result is array
echo $json->key; // you can access your key value like this if result is object
}
Try like following codes:
$json_string = '[{"productId":"epIJp9","name":"Product A","amount":"5","identifier":"242"},{"productId":"a93fHL","name":"Product B","amount":"2","identifier":"985"}]';
$array = json_decode($json_string);
foreach ($array as $value)
{
echo $value->productId; // epIJp9
echo $value->name; // Product A
}
Get Count
echo count($array); // 2
Did you check the manual ?
http://www.php.net/manual/en/function.json-decode.php
Or just find some duplicates ?
How to convert JSON string to array
Use GOOGLE.
json_decode($json, true);
Second parameter. If it is true, it will return array.
You can try the code at php fiddle online, works for me
$list = '[{"productId":"epIJp9","name":"Product A","amount":"5","identifier":"242"},{"productId":"a93fHL","name":"Product B","amount":"2","identifier":"985"}]';
$decoded_list = json_decode($list);
echo count($decoded_list);
print_r($decoded_list);
I am trying to read certain values from a json string in php, I am able to do a simple json string with only one value such as
$json = '{"value":"somevalue"}';
Using this:
<?php
$json = '{"value":"somevalue"}';
$obj = json_decode(json_encode($json));
print $obj->{'value'};
?>
But when i try an get a value from the following json string it throws an error...
$json = '{"field": "title","rule": {"required": "true","minlength": "4","maxlength": "150" }}';
I validated the json on JSONlint but not sure how to access the values within this with php.
Thanks
You can try this:
$json = '{"field": "title","rule": {"required": "true","minlength": "4","maxlength": "150" }}';
//since $json is a valid json format you needn't encode and decode it again
$obj = json_decode($json);
print_r($obj->filed);
print_r($obj->rule);
You can pass true as a second parameter to json_decode() to get the results as an array
$my_arr = json_decode($json, true);
var_dump($my_arr);
Should help you. You can then step through the array as you would normally.
use var_dump to print out the object with all it's members and hierarchy. you should then be able to find the value you are looking for