Display PHP variable values in separate HTML page - php

I am passing array from HTML page to PHP using xmlhttp. It all appears to be working fine. However, I need to verify that the PHP is receiving and decoding the JSON properly.
The code to read the JSON in PHP is as follows:
$str_json = file_get_contents('php://input');
$weekdates = json_decode($str_json, true);
$MON = $weekdates[0];
$TUE = $weekdates[1];
$WED = $weekdates[2];
$THU = $weekdates[3];
$FRI = $weekdates[4];
A simple echo in PHP won't work because the PHP script is being called from the HTML page.
So how does one display the variable values from the PHP file to see if what is being sent is what is being received.

Related

Use PHP to parse INI file and run JSON_DECODE

I'm looking to get some input on how to make modular code that performs a PHP parse_ini_file and then uses the returned values to run JSON decodes.
I have a BACnet API that returns a JSON structure for BACnet points in an automation system. I wrote the following code to decode the JSON data to return just the "present-value" field and then I display the value on a webpage.
<?php
$url = "http://hostname.lcl:47800/api/v1/bacnet/devices/10100/objects/0.0";
$json = file_get_contents($url);
$json_data = json_decode($json, true);
echo "<b>Room temperature</b>: ". $json_data["present-value"]. " DEG F";
;?>
This works well but I want to make this code modular so it can be used for many other points.
I created an INI file with a list of other points and the URL that contains the JSON data from the API.
## BACnet Configuration File
# BACnet Object URLs from WACNET Browser API
[bacnet]
SEA_RMT = http://hostname.lcl:47800/api/v1/bacnet/devices/10100/objects/0.0
SEA_SRV_SEA_SV1_01_EXHT = http://hostname.lcl:47800/api/v1/bacnet/devices/10100/objects/0.3
SEA_SRV_SEA_SV1_02_EXHT = http://hostname.lcl:47800/api/v1/bacnet/devices/10100/objects/0.4
SEA_SRV_SEA_SV1_03_EXHT = http://hostname.lcl:47800/api/v1/bacnet/devices/10100/objects/0.5
What I'd like to do is use the INI file to get the present value of each point in the list and then create a variable that is the name of the point and set it equal to the "present-value" field. Then I can reference the point using the PHP variable on the HTML page like this:
<?php echo "$SEA_SRV_SEA_SV1_01_EXHT";?>
I started with the code below but it doesn't work.
<?php
// Parse the settings file
$bacnetini = parse_ini_file('/var/www/config/bacnet.ini');
// Parse the keys to variables and add data
foreach ($bacnetini as $key => $value) {
$url = $value;
$json = file_get_contents($url);
$json_data = json_decode($json, true);
$$key = $json_data;
}
?>
I'd love to get some other opinions on the best way to accomplish this since I don't really know where to go from here.
I've looked through these other Stack Overflow questions but I don't know how to get the pieces to all fit together.
Parsing a config file in php to variables
Get JSON object from URL

Why not try something like this instead? This will allow you to create other sections in your INI file that won't affect your script.
<?php
$bacnetini = parse_ini_file('/var/www/config/bacnet.ini', true);
$data = array();
foreach ($bacnetini['bacnet'] as $key => $url) {
$data[$key] = json_decode(file_get_contents($url), true);
}
var_dump($data['SEA_SRV_SEA_SV1_01_EXHT']);
?>

Parsing Instagram json data to usable variable in php

I have a working api call to get basic user info and I am trying to return just the "followed_by" portion of the json data from "counts".
This link should return just the json page on your browser
https://api.instagram.com/v1/users/self/?access_token=3514554632.a691e29.3f773f5f335a4ba98fc9609d1d405fb0
And here is my code to try and parse the result, but all I am getting is a blank screen.
$jsondata = file_get_contents("https://api.instagram.com/v1/users/self/?access_token=3514554632.a691e29.3f773f5f335a4ba98fc9609d1d405fb0");
$json = json_decode($jsondata, true);
$json2 = json_decode($jsondata);
//method one to parse, not working
$parsedvalue = $json['counts'][1]['followed_by'];
echo $parsedvalue;
//method two to parse, not working
$followercount = $json2->counts->followed_by;
echo $followercount;

Here is the fix I got figured out for //method 2
$jsondata = file_get_contents("https://api.instagram.com/v1/users/self/?access_token=3514554632.a691e29.3f773f5f335a4ba98fc9609d1d405fb0");
$json2 = json_decode($jsondata);
$followercount = $json2->data->counts->followed_by;
This properly returns your follower count, but I still need help understanding how to fix method one

Get a JSON from url with PHP

Im new to php and tried to get a json object from the twitch API to retrieve one of its values and output it. i.e
i need to get the information from this link: https://api.twitch.tv/kraken/users/USERNAME/follows/channels/CHANNELSNAME
plus i need to to something so i can modify the urls USERNAME and CHANNELSUSERNAME. I want it to be a api to call for howlong user XY is following channelXY and this will be called using nightbots $customapi function.
the date i need from the json is "created_at"
Since we were able to clear out the errorsheres the final PHP file that works if anyone encounters similiar errors:
<?php
$url = "https://api.twitch.tv/kraken/users/" . $_GET['username'] . "/follows/channels/" . $_GET['channel'];
$result = file_get_contents($url);
$result = json_decode($result, true);
echo $result["created_at"];
?>

You have a typo in your code on the first line and you're not storing the result of your json_decode anywhere.
<?php
$url = "https://api.twitch.tv/kraken/users/" . $_GET['username'] . "/follows/channels/" . $_GET['channel'];
$result = file_get_contents($url);
$result = json_decode($result, true);
echo $result["created_at"];
You have to call the page this way page.php?username=yeroise&channel=ceratia in order to output the created_at value for this user and this channel.
In your code you're using 2 different ways to get the content of the page and you only need one (either file_get_contents or using CURL), I chose file_get_contents here as the other method adds complexity for no reason in this case.

get request for a website in a php script

I want to get request in a website like that
$id = "something";
$response = http_get("http://example.com?id=$id, array("timeout"=>1), $out);
I don't find how exactly I can use http_get
I've tried with file_get_contents, it is working like
$out = file_get_contents("http://www.example.com?id=something");
but I want it like that
$out = file_get_contents("http://www.example.com?id=$id");
this one is not working

The way I got it to work was using the code below.
$out = file_get_contents("http://www.example.com?id=".$id);
This will concatenate the $id variable contents onto the end of the url to request.

Ajax - PHP associative array into jquery associative array via ajax/json

I have the following hardcoded into jquery and I want to move the code over to pull the values from a database using ajax.
I get the data back and pass it through using json_encode but I need to keep the same format.
codes['851'] = new Array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
codes['852'] = new Array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
codes['522'] = new Array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','120','205','206','207','208','209');
Here is the php array prior to json_encode.
$codes = array();
codes['851'] = array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
codes['852'] = array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
codes['522'] = array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','120','205','206','207','208','209');
I am trying to keep the same format as I do not want to rewrite all the other code in the script. Is it possible to match format?

if I understand right, you need format like this in your ajax responce.
codes['851'] = new Array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
codes['852'] = new Array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
codes['522'] = new Array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','120','205','206','207','208','209');
for PHP you need next:
$codes = array();
$codes['851'] = array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
$codes['852'] = array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','110','120','205','206','207','208');
$codes['522'] = array('11','12','20','21','23','24','30','41','43','44','45','48','50','52','53','54','55','60','70','120','205','206','207','208','209');
echo 'codes='.json_encode($codes).';';
this is not similar visual, but equal in JS Object structure.

So the issue was in the ajax code, I had code outside of my ajax call that wasn't being called. After I moved the methods inside the success callback of the ajax call it all worked perfectly.

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