I wanted to print the name of the coin (obtained from a JSON response of a site) + "test" when the page is loaded; the problem is that only "test" is printed as if it did not find the name of the coin.
PHP code:
<?php
$coinbase = "https://api.coinmarketcap.com/v1/ticker";
$array = array("/bitcoin","/ethereum");
find();
function find(){
$coin = file_get_contents($GLOBALS["coinbase"].$array[1]);
$coin = json_decode($coin, TRUE);
$v = $coin['name']."test";
echo $v;
}
?>
JSON structure:
[
{
id: "bitcoin-cash",
name: "Bitcoin Cash",
symbol: "BCH",
rank: "4",
price_usd: "1042.72",
price_btc: "0.114721",
24h_volume_usd: "462221000.0",
market_cap_usd: "17742232718.0",
available_supply: "17015338.0",
total_supply: "17015338.0",
max_supply: "21000000.0",
percent_change_1h: "1.59",
percent_change_24h: "-4.49",
percent_change_7d: "-14.31",
last_updated: "1520950752"
}
]
If I try like this I got the answer. I've printed the $coin for your clear understanding How can you easily access 2D array with its index 0 here.
function find()
{
$coinbase = "https://api.coinmarketcap.com/v1/ticker";
$array = array("/bitcoin","/ethereum");
$coin = file_get_contents($coinbase.$array[1]);
$coin = json_decode($coin, TRUE);
//printing only for debug purpose
print '<pre>';
print_r($coin);
print '<pre>';
$v = $coin[0]['name']."test";
echo $v;
}
find();
Output:
Printing it just for your clear understanding why I used $coin[0]['name'] index to get the name from 2D $coin array.
Array
(
[0] => Array
(
[id] => ethereum
[name] => Ethereum
[symbol] => ETH
[rank] => 2
[price_usd] => 687.193
[price_btc] => 0.0760364
[24h_volume_usd] => 1696390000.0
[market_cap_usd] => 67457446384.0
[available_supply] => 98163757.0
[total_supply] => 98163757.0
[max_supply] =>
[percent_change_1h] => -0.63
[percent_change_24h] => -2.36
[percent_change_7d] => -16.98
[last_updated] => 1520955853
)
)
This is what you want
Ethereumtest
N.B: Please note here the comment of https://stackoverflow.com/users/4265352/axiac carefully
$array is not accessible in function find(). Read about variable scope
in PHP then forget everything about $GLOBALS or global
As per comment:
$coinbase = "https://api.coinmarketcap.com/v1/ticker";
$array = array("/bitcoin","/ethereum");
function find(){
global $coinbase;
global $array;
$coin = file_get_contents($coinbase.$array[1]);
$coin = json_decode($coin, TRUE);
print '<pre>';
print_r($coin);
$v = $coin[0]['name']."test";
echo $v;
}
find();
Try:
$coin = file_get_contents($GLOBALS["coinbase"].$array[1]);
$coin = json_decode($coin, TRUE);
$v = $coin[0]['name']."test";
echo $v;
This json is an array of ojects so you should access first the index of the array and then, the property of the object.
EDIT
$coin = file_get_contents("https://api.coinmarketcap.com/v1/ticker/ethereum");
Try to hardcode the url to test it.
Related
From PHP code I want to create an json array:
[
{"region":"valore","price":"valore2"},
{"region":"valore","price":"valore2"},
{"region":"valore","price":"valore2"}
]
How can I do this?
Easy peasy lemon squeezy: http://www.php.net/manual/en/function.json-encode.php
<?php
$arr = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5);
echo json_encode($arr);
?>
There's a post by andyrusterholz at g-m-a-i-l dot c-o-m on the aforementioned page that can also handle complex nested arrays (if that's your thing).
Use PHP's native json_encode, like this:
<?php
$arr = array(
array(
"region" => "valore",
"price" => "valore2"
),
array(
"region" => "valore",
"price" => "valore2"
),
array(
"region" => "valore",
"price" => "valore2"
)
);
echo json_encode($arr);
?>
Update: To answer your question in the comment. You do it like this:
$named_array = array(
"nome_array" => array(
array(
"foo" => "bar"
),
array(
"foo" => "baz"
)
)
);
echo json_encode($named_array);
Simple: Just create a (nested) PHP array and call json_encode on it. Numeric arrays translate into JSON lists ([]), associative arrays and PHP objects translate into objects ({}). Example:
$a = array(
array('foo' => 'bar'),
array('foo' => 'baz'));
$json = json_encode($a);
Gives you:
[{"foo":"bar"},{"foo":"baz"}]
Best way that you should go every time for creating json in php is to first convert values in ASSOCIATIVE array.
After that just simply encode using json_encode($associativeArray). I think it is the best way to create json in php because whenever we are fetching result form sql query in php most of the time we got values using fetch_assoc function, which also return one associative array.
$associativeArray = array();
$associativeArray ['FirstValue'] = 'FirstValue';
...
etc.
After that.
json_encode($associativeArray);
also for array you can use short annotattion:
$arr = [
[
"region" => "valore",
"price" => "valore2"
],
[
"region" => "valore",
"price" => "valore2"
],
[
"region" => "valore",
"price" => "valore2"
]
];
echo json_encode($arr);
That's how I am able to do with the help of solution given by #tdammers below.
The following line will be placed inside foreach loop.
$array[] = array('power' => trim("Some value"), 'time' => "time here" );
And then encode the array with json encode function
json_encode(array('newvalue'=> $array), 200)
Just typing this single line would give you a json array ,
echo json_encode($array);
Normally you use json_encode to read data from an ios or android app. so make sure you do not echo anything else other than the accurate json array.
I created a crude and simple jsonOBJ class to use for my code. PHP does not include json functions like JavaScript/Node do. You have to iterate differently, but may be helpful.
<?php
// define a JSON Object class
class jsonOBJ {
private $_arr;
private $_arrName;
function __construct($arrName){
$this->_arrName = $arrName;
$this->_arr[$this->_arrName] = array();
}
function toArray(){return $this->_arr;}
function toString(){return json_encode($this->_arr);}
function push($newObjectElement){
$this->_arr[$this->_arrName][] = $newObjectElement; // array[$key]=$val;
}
function add($key,$val){
$this->_arr[$this->_arrName][] = array($key=>$val);
}
}
// create an instance of the object
$jsonObj = new jsonOBJ("locations");
// add items using one of two methods
$jsonObj->push(json_decode("{\"location\":\"TestLoc1\"}",true)); // from a JSON String
$jsonObj->push(json_decode("{\"location\":\"TestLoc2\"}",true));
$jsonObj->add("location","TestLoc3"); // from key:val pairs
echo "<pre>" . print_r($jsonObj->toArray(),1) . "</pre>";
echo "<br />" . $jsonObj->toString();
?>
Will output:
Array
(
[locations] => Array
(
[0] => Array
(
[location] => TestLoc1
)
[1] => Array
(
[location] => TestLoc2
)
[2] => Array
(
[location] => TestLoc3
)
)
)
{"locations":[{"location":"TestLoc1"},{"location":"TestLoc2"},{"location":"TestLoc3"}]}
To iterate, convert to a normal object:
$myObj = $jsonObj->toArray();
Then:
foreach($myObj["locations"] as $locationObj){
echo $locationObj["location"] ."<br />";
}
Outputs:
TestLoc1 TestLoc2 TestLoc3
Access direct:
$location = $myObj["locations"][0]["location"];
$location = $myObj["locations"][1]["location"];
A practical example:
// return a JSON Object (jsonOBJ) from the rows
function ParseRowsAsJSONObject($arrName, $rowRS){
$jsonArr = new jsonOBJ($arrName); // name of the json array
$rows = mysqli_num_rows($rowRS);
if($rows > 0){
while($rows > 0){
$rd = mysqli_fetch_assoc($rowRS);
$jsonArr->push($rd);
$rows--;
}
mysqli_free_result($rowRS);
}
return $jsonArr->toArray();
}
I'm trying to write to a variable inside an object and I can't find how to do it.
Array
(
[0] => stdClass Object
(
[id] => 3
[rota_name] => Tea and coffee
[rota_owner_name] => 9
[rota_notes] =>
[rota_entry] => {"rota_entry0":{"person":"8","rota_assignment_date":"2018-04-01 20:17:48","rota_role":""},"rota_entry1":{"person":"7","rota_assignment_date":"2018-04-08 20:17:48","rota_role":""},"rota_entry2":{"person":"11","rota_assignment_date":"2018-04-15 20:17:48","rota_role":""},"rota_entry3":{"person":"7","rota_assignment_date":"2018-04-22 20:17:48","rota_role":""},"rota_entry4":{"person":"10","rota_assignment_date":"2018-04-29 20:17:48","rota_role":""},"rota_entry5":{"person":"3","rota_assignment_date":"2018-05-06 20:18:20","rota_role":""},"rota_entry6":{"person":"11","rota_assignment_date":"2018-05-13 20:18:23","rota_role":""}}
[rota_advance_email_days] =>
[rota_reminder_sent] =>
)
I want to change person 8 to person 9
So I think that I need to get the rota_entry (using foreach) and then use Json_decode to get an array and then something but my brain now hurts :( I and don't know how to reset it back up to put into the database again.
I can find lots that talks about simple JSON decode or simple array parsing but not something to help with this
This code assumes $obj = the first entry in your array you show.
So $obj = Array[0]
$json = json_decode($obj->rota_entry);
$json->rota_entry0->person = 9;
$obj->rota_entry = json_encode($json);
This code changes rota_entry0 person 8 to 9
// Your original array
$array = [
0 => (object) [
'id' => 3,
'rota_name' => 'Tea and coffee',
'rota_owner_name' => 9,
'rota_notes' => '',
'rota_entry' =>' {"rota_entry0":{"person":"8","rota_assignment_date":"2018-04-01 20:17:48","rota_role":""},"rota_entry1":{"person":"7","rota_assignment_date":"2018-04-08 20:17:48","rota_role":""},"rota_entry2":{"person":"11","rota_assignment_date":"2018-04-15 20:17:48","rota_role":""},"rota_entry3":{"person":"7","rota_assignment_date":"2018-04-22 20:17:48","rota_role":""},"rota_entry4":{"person":"10","rota_assignment_date":"2018-04-29 20:17:48","rota_role":""},"rota_entry5":{"person":"3","rota_assignment_date":"2018-05-06 20:18:20","rota_role":""},"rota_entry6":{"person":"11","rota_assignment_date":"2018-05-13 20:18:23","rota_role":""}}',
'rota_advance_email_days' => '',
'rota_reminder_sent' => '',
]
];
// Create an empty object to replace the rota_entry key in the array
$rotaEntry = (object) [];
// Iterate through the original rota_entry and replace "person"
foreach (json_decode($array[0]->rota_entry) as $key => $value) {
// You can set whatever logic you want here
// For example: if ($key == "rota_entry4") {$value->person = 4;}
// I'm hardcoding "9"
$value->person = 9;
$rotaEntry->$key = $value;
}
// Assign the newly created (and modified) rotaEntry back to the original array
$array[0]->rota_entry = $rotaEntry;
Try this:
$array = (array) $object;
foreach($array as &$value){
$json = json_encode($value['rota_entry']);
$json -> rota_entry0 -> person = 9;
$value['rota_entry'] = json_encode($json);
}
$array = (object) $array;
good luck.
I have array multidimensional code like this:
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$eaten = 'grape';
unset($array[$eaten]);
and what i need is to delete 'grape' from the array because 'grape' already eaten. how to fix my code to unset the 'grape'?
and my question number two, if it can be unset, is there a way to unset multi value like
unset($array,['grape','orange']);
thanks for help..
You can remove eaten element by following way. Use array_search() you can find key at the position of your eaten element.
Here below code shows that in any multidimensional array you can call given function.
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$eaten = 'grape';
$array = removeElement($array, $eaten);
function removeElement($data_arr, $eaten)
{
foreach($data_arr as $k => $single)
{
if (count($single) != count($single, COUNT_RECURSIVE))
{
$data_arr[$k] = removeElement($single, $eaten);
}
else
{
if(($key = array_search($eaten, $single)) !== false)
{
unset($data_arr[$k][$key]);
}
}
}
return $data_arr;
}
P.S. Please note that you can unset() multiple elements in single call. But the way you are using unset is wrong.
Instead of using unset() i suggest you to create a new Array after removal of required value benefit is that, your original array will remain same, you can use it further:
Example:
// your array
$yourArr = array(
'fruits'=>array('apple','orange','grape', 'pineaple'),
'vegetables'=>array('tomato', 'potato')
);
// remove array that you need
$removeArr = array('grape','tomato');
$newArr = array();
foreach ($yourArr as $key => $value) {
foreach ($value as $finalVal) {
if(!in_array($finalVal, $removeArr)){ // check if available in removal array
$newArr[$key][] = $finalVal;
}
}
}
echo "<pre>";
print_r($newArr);
Result:
Array
(
[fruits] => Array
(
[0] => apple
[1] => orange
[2] => pineaple
)
[vegetables] => Array
(
[0] => potato
)
)
Explanation:
Using this array array('grape','tomato'); which will remove the value that you define in this array.
This is how I would do it.
$array = [
'fruits' => ['apple','orange','grape', 'pineaple'],
'vegetables' => ['tomato', 'potato']
];
$unset_item = 'grape';
$array = array_map(function($items) use ($unset_item) {
$found = array_search($unset_item, $items);
if($found){
unset($items[$found]);
}
return $items;
}, $array);
I'm trying to create JSON feed from one site which i want to decode on another. The problem is there seem to be to many array[0], so it is hard to loop through it and count how many objects there are.
How can i do this encode and decode without getting all these arrays, to make it easier to count the amount of objects and loop through it.
at the moment i'm encoding it like this:
$data = array();
foreach ($posts as $post) {
$r = str_replace("\n",'', shorten_txt($post->post_content, 500));
$n = str_replace("\r", '', $r);
$post_data = array(
'title' => get_the_title($post->ID),
'link' => get_permalink($post->ID),
'image' => catch_that_image(),
'content' => $n,
'time' => get_the_date( $d)." ". get_the_time( $d));
$data[] = (array('item' => $post_data));
}
echo json_encode($data);
This gives this output:
[
{
item: {
title: "Hello world!",
link: "http://URL/wordpress/?p=1",
image: "http://URL/wordpress/wp-content/uploads/2014/04/Digital-Board-2.png",
content: "Welcome to WordPress. This is your first post. Edit or delete it, then start blogging!",
time: "April 17, 2014 5:32 pm"
}
}
]
When i decode this i get this:
Array ( [0] => Array ( [item] => Array( [title] => Hello world! [link] => http://URL/wordpress/?p=1 [image] => http://URL/wordpress/wp-content/uploads/2014/04/Digital-Board-2.png [content] => Welcome to WordPress. This is your first post. Edit or delete it, then start blogging! Jeg elsker kage [time] => April 17, 2014 5:32 pm ) ) )
The decode code:
$json_string = 'http://95.85.11.40/wordpress/?page_id=20';
$jsondata = file_get_contents($json_string);
$obj = json_decode($jsondata, true);
print_r($obj);
If you don't want those array[0] bits, then don't create a 2D array:
$data[] = (array('item' => $post_data));
Should then be:
$data[] = $post_data;
Your current statement read as _add to array $data an array, with 1 key: "item", whereas my version just says: add to $data the value of $post_data.
loping oiver decoded data:
$data = json_decode(file_get_contents($jsonFile), true);
foreach ($data as $idx => $item)
{
echo 'This is item number ', $idx +1, PHP_EOL;
print_r($item);
}
I have the customer details in the following format
How do i fetch the customer id is '5' from the output.
json_decode(array)
Result:
stdClass Object (
[5] => stdClass Object (
[email] => siddareddy.vishnuvardhanreddy#gmail.com
[firstname] => vishnu
[lastname] => siddareddy
)
)
You can cast it to an array and then get the first key:
$key = key( (array) $result_object );
$array = json_decode($json, true);
foreach ($array as $key => $value)
{
echo $key; //or use $value array to get the rest of its info
}
Please note that your first line cannot yield the second line as output. The first line should return an array, while the second code block is an object.
You can loop through all keys and values of your Array/Object and get the '5' that way:
foreach( $decodedjson as $key => $val ) {
#Key is: 5
echo "Key is: {$key}";
#Val['firstname'] is: vishnu
echo "Val['firstname'] is: {$val['firstname']}";
}
You can access the numeric property like this
<?php
$data = array(
"5" => array(
'email' => 'siddareddy.vishnuvardhanreddy#gmail.com',
'firstname' => 'vishnu',
'lastname' => 'siddareddy'
)
);
$json = json_encode($data);
$obj = json_decode($json);
var_dump($obj->{5}->email);
$obj->{5}->email, this the trick.
If you want to invert the array from id to that array from say, email to id:
$result = json_decode($array, true);
// Change email to something else if you want another key
$inversecopy = array_flip(array_map(function($val) { return $val['email']; }, $result));
Example in phpfiddle