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
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
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);
}
}
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);
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 want to retrieve array value.
This is my array value:
overlay.txt:
{"title":"sss","description":"sss","code":"sss"}
{"title":"trtr","description":"trtr","code":"tyrytr"}
{"title":"ret54","description":"56tr","code":"ty76"}
{"title":"rgfdg","description":"dfgdfg","code":"dfgdfg"}
{"title":"asfafdsf","description":"sdfsdf","code":"sdfsdfsdf"}
This is my code: but this is not working.why?
How to retrieve value from overlay.txt file.
I did not get all title value.
I do not known how to get title value from overlay.txt
The $title is showing empty.
Where I want to change in my code to get $title value.
$info = array();
$folder_name = $this->input->post('folder_name');
$info['title'] = $this->input->post('title');
$info['description'] = $this->input->post('description');
$info['code'] = $this->input->post('code');
$json = json_encode($info);
$file = "./videos/overlay.txt";
$fd = fopen($file, "a"); // a for append, append text to file
fwrite($fd, $json);
fclose($fd);
$filecon = file_get_contents('./videos/overlay.txt', true);
$this->load->view('includes/overlays',$filecon);
//overlays page;
foreach($filecon as $files)
{
$title=$files['title'];
echo $title;
}
You're encoding your array to JSON, so at some point you need to decode it again into a PHP array. Since you actually have several JSON objects in the file, you need to decode each one individually. Assuming it's always one JSON object per line, this'll do:
$jsonObjects = file('overlay.txt', FILE_IGNORE_NEW_LINES);
foreach ($jsonObjects as $json) {
$array = json_decode($json, true);
echo $array['title'];
...
}
This will very quickly break if there are line breaks within the serialized JSON, e.g.:
{"title":"ret54","description":"foo
bar","code":"ty76"}
That way of storing the data is not very reliable.
make overlay.txt fully json format:
[
{"title":"sss","description":"sss","code":"sss"},
{"title":"trtr","description":"trtr","code":"tyrytr"},
...
]
and try this:
$raw = file_get_contents('./videos/overlay.txt', true);
$this->load->view('includes/overlays', array("filecon" => json_decode($raw)));
overlay page:
<?php
foreach($filecon as $files) {
echo $files['title'];
}
?>
If you want to use $filecon in view file,
set an array which has the key "filecon" in $this->load->view()'s second argument.
http://codeigniter.com/user_guide/general/views.html