This is what my JSON file currently looks like:
{"coins":"0","uses":"0"}
I'm trying to update it's values by using the following PHP:
$jsonString = file_get_contents('/path/money_maker.json');
$data = json_decode($jsonString);
$data["coins"] = $data["coins"] + $coins;
$data["uses"] = $data["uses"] + 1;
$newJsonString = json_encode($data);
file_put_contents('/path/money_maker.json', $newJsonString);
However, it's not working. How come? I've tried doing some research, but nothing has helped me thus far.
the content of the file is json object.you cant use it like array.try this
$jsonString = file_get_contents('money-maker.json');
$data = json_decode($jsonString);
$data->coins = $data->coins + $coins;
$data->uses = $data->uses + 1;
$newJsonString = json_encode($data);
file_put_contents('money-maker.json', $newJsonString);
or you can convert it first then use it.
The answer by sgt is correct, but you can also have json_decode create arrays instead of objects as seen in the PHP manual (http://be2.php.net/manual/en/function.json-decode.php) by using the assoc parameter: $data = json_decode($jsonString, true);
Related
I send the following data to my php file via ajax:
JSON.stringify({test1: '1', test2: '2'})
I would like to write this data to my JSON FILE content.json containing an empty array
[]
I only want to add the content though if it is not there, yet. This is my PHP code:
$jsonStringObject = file_get_contents("php://input");
$phpObject = json_decode($jsonStringObject);
$newJsonStringObject = json_encode($phpObject);
header('Content-Type: application/json');
$jsonString = file_get_contents('content.json');
$data = (array) json_decode($jsonString, true);
if (in_array($phpObject, $data) === false){
$data[] = $phpObject;
}
$newJsonString = json_encode($data);
file_put_contents('content.json', $newJsonString);
It almost works. Something is wrong with the way the data is added to the array because when I call the function for the first time, it updates content.json to
[null,{"test1":"1","test2":"2"}]
On calling the function again, it adds the object again despite the if-statement:
[null,{"test1":"1","test2":"2"},{"test1":"1","test2":"2"},{"test1":"1","test2":"2"}]
Can anyone help me to spot the mistake?
You're comparing apples and oranges (or rather objects to arrays).
Make sure you decode all json as arrays:
$jsonStringObject = file_get_contents("php://input");
// Added true as second argument to get it bas as an array
$phpObject = json_decode($jsonStringObject, true);
$jsonString = file_get_contents('content.json');
// Removed the (array) since the second argument literally means "return as array"
$data = json_decode($jsonString, true);
if (in_array($phpObject, $data) === false){
$data[] = $phpObject;
}
$newJsonString = json_encode($data);
file_put_contents('content.json', $newJsonString);
Demo: https://3v4l.org/rnCn5
Can anyone please shows me how to get the input of PHP to JSON file (.json) and read data from JSON file and display in PHP (Echo).
for example:
$myObj->name = "John";
$myObj->age= 20;
to result.json
{"name":"John","Age":20}
and retrieve from result.json and display data in PHP as
name=John
Age=20
To convert the object to json use this:
$json = json_encode($myObj);
See the json_encode docs.
To return it back to the format you want try this...
$obj = json_decode($json);
$name = $obj->name; // John
$age = $obj->age; // 20
See the json_decode docs.
To iterate over keys and values do something like this:
foreach($obj as $key=>$value)
{
echo $key . " = " . $value . "\n";
}
json_encode() is used for encoding PHP data into a JSON format and json_decode() is used to decode JSON into a PHP data
json_encode documentation:
http://php.net/manual/en/function.json-encode.php
json_decode documentation
http://php.net/manual/en/function.json-decode.php
if you are having an php array you can convert it into json.
$json_string = json_encode($array);
and write this into a json file.
$fp = fopen('results.json', 'w');
fwrite($fp, json_string);
fclose($fp);
now convert your json string which is in results.json to array.
$str = file_get_contents('./results.json');
$array = json_decode($str, true); // decode the JSON into an associative array
Currently I have PHP and JS save my data in a JSON.
Below is the code for it:
PHP:
<?php
$jsonString = file_get_contents('passwords.json');
$data = json_decode($jsonString, true);
// get the q parameter from URL
$q = $_REQUEST["q"];
$item = $_REQUEST["item"];
// or if you want to change all entries with activity_code "1"
foreach ($data["passwords"] as $key => $password) {
echo $data["passwords"][$key]['timesToUse'] - 1;
if ($password['password'] == $q) {
$data["passwords"][$key]['timesToUse'] = $data["passwords"][$key]['timesToUse'] - 1;
$data["passwords"][$key]['winningItem'] = $item;
}
}
$newJsonString = json_encode($data);
file_put_contents('passwords.json', $newJsonString);
?>
JS:
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET", "passwords.php?q="+passwords[i].password+"&item="+winningItem.getFullName(), true);
xmlhttp.send();
The issue that I am having is that initially my JSON file looks like this:
{"password":"IS360H","timesToUse":1,"winningItem":""},
{"password":"AGRD33","timesToUse":1,"winningItem":""},
{"password":"4BX0FV","timesToUse":1,"winningItem":""},
{"password":"99NOTX","timesToUse":1,"winningItem":""},
{"password":"X2Z8BO","timesToUse":1,"winningItem":""},
{"password":"R9G4Q0","timesToUse":1,"winningItem":""},
{"password":"CG9RGT","timesToUse":1,"winningItem":""},
As you can see it is nice and neat and is sitting at 1 password per line. However once the file gets modified, it turns to this:
{"password":"IS360H","timesToUse":0,"winningItem":"counterUAV"},{"password":"AGRD33","timesToUse":0,"winningItem":"sentryGun"},"password":"4BX0FV","timesToUse":0,"winningItem":"chopperGunner"},"password":"99NOTX","timesToUse":1,"winningItem":""},{"password":"X2Z8BO","timesToUse":1,"winningItem":""}, {"password":"R9G4Q0","timesToUse":1,"winningItem":""},"password":"CG9RGT","timesToUse":1,"winningItem":""},
What do I need to do to make my JSON file preserve the line breaks?
Thank you!
There is option JSON_PRETTY_PRINT available in json_encode function, if you are using same for encoding json. Try following:
$json_string = json_encode($data, JSON_PRETTY_PRINT);
Read more about json_encode
I need to decode this json value using PHP. I need the value 'url'.
Here is what I have but does not work.
$json = file_get_contents('http://graph.facebook.com/{fb-ID}/picture?type=large&redirect=false');
$decoded = json_decode($json,true);
$url = $decoded[???]; // NEED THIS VAR.
Since $decoded is a PHP array you can access it like any other array:
$url = $decoded['data']['url'];
$decoded=(object)json_decode( $json['data'], true );
echo $decoded->url
This worked:
$json = file_get_contents('http://graph.facebook.com/{fb-ID}/picture?type=large&redirect=false');
$decoded = json_decode($json,true);
$url = $decoded['data']['url'];
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'];