I am getting [{"2016":"200"},{"2017":"200"}] This JSON string from server , I want to append another object ie. {"2018":"324"} at the end of the existing JSON array and want to delete object at the 0th index the existing JSON array so that the my desired result [{"2017":"200"}{"2018":"324"}] can be obtained.
Here's what i am doing
$str = json_decode($x1,TRUE); //x1 is my JSON
array_push($str, array("2018"=>"324")); //adding another object
unset($str[0]); //removing 0th index
$s = json_encode($str,TRUE); //making JSON again
echo $s;
Problem here is $s giving output in object form like {"1":{"2017":"200"},"2":{"2018":"35"}} While what is wanted is [{"2017":"200"}{"2018":"324"}]
I might suggest better approach, using array_shift():
$json = json_decode($x1, TRUE); // decoding
array_shift($json); // removing first element
$json[] = [ "2018" => "324" ]; // adding last element
$str = json_encode($json); // encoding
echo $str;
As others already pointed out, you getting object equivalent because your array not starting from 0 index, so it is converted in javascript object with numeric keys. I'm using array_shift() to remove first element. It will also reset indices in array. It also would be (insignificantly) faster, if you remove first key before adding other elements to array.
Related
I'm trying to get the first element of my asociative array $_POST['tableFields'].
print_r($_POST['tableFields']); // I get: ["id","usuario","apellido1","apellido2","email","password"]
I tryied using reset() method but doesn't show anything.
$campo = reset($_POST['tableFields']);
print_r($campo); // This doesn't show anything.
It is JSON format so its a string value. You must do print_r(json_decode($_POST['tableFields'],1)[0]); or reset(json_decode($_POST['tableFields'],1));
I have a string like this
{"2":{"name":"Moon Center","value":"moon7","value_raw":"moon7","id":2,"type":"select"},"3":{"name":"Multiple Choice","value":"Second Choice","value_raw":"Second Choice","id":3,"type":"radio"}}
How do I get for example, the content inside value to a variable? And I would want to be able to get it for every item with value in there. There will be several that come from a form in a single string.
This is the response from a form that stores the whole string in a string. Kinda wish it was an array but this is what i'm working with.
Your string is actually a JSON value. To get the data out of it, you must first json_decode it to an array (or object). If you choose an array, you can then use array_column to get all the 'value' values:
$json = '{"2":{"name":"Moon Center","value":"moon7","value_raw":"moon7","id":2,"type":"select"},"3":{"name":"Multiple Choice","value":"Second Choice","value_raw":"Second Choice","id":3,"type":"radio"}}';
$array = json_decode($json, true);
print_r(array_column($array, 'value'));
Output:
Array (
[0] => moon7
[1] => Second Choice
)
Demo on 3v4l.org
I have a script that loops through and retrieves some specified values and adds them to a php array. I then have it return the value to this script:
//Returns the php array to loop through
$test_list= $db->DatabaseRequest($testing);
//Loops through the $test_list array and retrieves a row for each value
foreach ($test_list as $id => $test) {
$getList = $db->getTest($test['id']);
$id_export[] = $getList ;
}
print(json_encode($id_export));
This returns a JSON value of:
[[{"id":1,"amount":2,"type":"0"}], [{"id":2,"amount":25,"type":"0"}]]
This is causing problems when I try to parse the data onto my android App. The result needs to be something like this:
[{"id":1,"amount":2,"type":"0"}, {"id":2,"amount":25,"type":"0"}]
I realize that the loop is adding the array into another array. My question is how can I loop through a php array and put or keep all of those values into an array and output them in the JSON format above?
of course I think $getList contains an array you database's columns,
use
$id_export[] = $getList[0]
Maybe can do some checks to verify if your $getList array is effectively 1 size
$db->getTest() seems to be returning an array of a single object, maybe more, which you are then adding to a new array. Try one of the following:
If there will only ever be one row, just get the 0 index (the simplest):
$id_export[] = $db->getTest($test['id'])[0];
Or get the current array item:
$getList = $db->getTest($test['id']);
$id_export[] = current($getList); //optionally reset()
If there may be more than one row, merge them (probably a better and safer idea regardless):
$getList = $db->getTest($test['id']);
$id_export = array_merge((array)$id_export, $getList);
I am trying to unset a value from test_bots.json and save it back, but somehow the data format is being changed in the process.
test_bots.json contains this JSON array:
["John","Vladimir","Toni","Joshua","Jessica"]
My code looks like this:
$good = 'Toni';
$good_arr = file_get_contents('test_bots.json');
$good_arr = json_decode($good_arr);
if(in_array($good, $good_arr)){
$key = array_search($good, $good_arr);
unset($good_arr[$key]);
$good_arr2 = json_encode($good_arr);
file_put_contents('test_bots.json',$good_arr2);
}
The output that's saved is:
{"0":"John","1":"Vladimir","3":"Joshua","4":"Jessica"}
but I want the output to look like:
["John","Vladimir","Joshua","Jessica"]
I tried to unserialize the array before saving it, but it's not working.
Why is this happening?
In order for json_encode to convert a PHP array with numeric keys to a JSON array rather than a JSON object, the keys must be sequential. (See example #4 in the PHP manual for json_encode.)
You can accomplish this in your code by using array_values, which will reindex the array after you have removed one of the items.
$good_arr2 = json_encode(array_values($good_arr));
I am trying to get json data from the Statcounter API.
I have the following:
$query = makeQuery("2292634", "demo_user", "statcounter", "visitor", "");
echo $query . "<br>";
$response = file_get_contents($query, true);
$data = json_decode($response, true);
echo $data['sc_data']['log_visits'];
I know the query is correct, and I know the $response is filled with unformatted json. The trouble is accessing the array and pulling the values out.
Here are the first couple lines of the unformatted json it is giving me.
This link will only work for 15 minutes, I can generate a new one if you would like to see the raw json.
http://api.statcounter.com/stats/?vn=3&s=visitor&pi=2292634&t=1398791335&u=demo_user&sha1=c6cdfd6c84227801c6ca758c17252712e3f76514
{"#attributes":{"status":"ok"},"sc_data":[{"log_visits":"1","entries_in_visit":"2","entry_t":"2014-04-29 17:57:33","entry_url":"http:\/\/www.guitar-online.com\/en\/","entry_title":"Learn how to play the guitar: tutorials, guitar
Obviously I am not accessing the array in the correct way...but I haven't found the syntax to make it work YET!
Thank you for your help.
Looking at your data, sc_data is an array containing nested JSON objects so you should be able to iterate over that array to read the data like you want:
echo $data['sc_data'][0]['log_visits'];
The code above will access the first element of the array sc_data and print the value of log_visits
When you have {"field":['a','b','c']} in JSON, you would access 'a' as field[0].
The elements of the array can be any valid value, i.e.
string
number
object
array
true
false
null
In your case it is objects and you access that object the same way you would access any other array element - by the index number (JSON doesn't have associative array of type "key" => "value")