I am using charts.js and trying to load data from a JSON API using cURL to pass to the chart. So I am using a PHP variable to pass to JavaScript. I did a test in ajax and it worked, but wanting to use cURL I cannot figure out the issue.
I created an if statement that it will print out nothing on an empty variable and that's what it has been doing, so I believe the issue is with cURL.
<?php
$url = "https://api.coindesk.com/v1/bpi/historical/close.json?currency=btc";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Accept: application/json'));
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($curl);
if(!empty($data)) {
$data = $btc;
} else {
print ("nothing");
}
curl_close($curl);
?>
<body>
<canvas id="myChart" width="250px" height="250px"></canvas>
<script>
jsonData=<?php echo $btc ?>;
var jsonLabels=[];
var jsonValues=[];
for(x in jsonData['bpi']){
jsonLabels.push(x);
jsonValues.push(jsonData['bpi'][x]);
}
Related
I'd like to create a chart with d3.js. Could someone tell me how to work with the jsondata[timestamp,price]. I get the data from coingeckoAPI and it looks like that:
{"prices":[[1649667011317,38721.07051511258],[1649667168163,38726.36780848938],[1649667622285,38750.30201896313],[1649667926510,38715.36968177588],[1649668246571,38705.597785934006],[1649668432287,38690.34512542588],[1649668897715,38620.57305041674],[1649669050953,38613.10740572825],[1649669284813,38568.32503183882],[1649669697192,38518.76279413846],[1649669982557,38491.21941297744],[1649670258121,38460.7219359208],[1649670606639,38417.38270710583],[1649670978757,38349.85248699985],[1649671244134,38336.437837571124],
thats my Php Code:
function history($url) {
$ch= curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
$resp = curl_exec($ch);
if ($e= curl_error($ch)) {
echo $e;
}
else {
return $resp;
}
curl_close($ch);
}
and HTML:
<?php echo history("https://api.coingecko.com/api/v3/coins/bitcoin/market_chart?vs_currency=eur&days=1");
?>
Please change HTML line to below
var data = <?php echo history("https://api.coingecko.com/api/v3/coins/bitcoin/market_chart?vs_currency=eur&days=1");?>;
You may use JSON.parse if it gives any parsing error in javascript code.
var data = JSON.parse(<?php echo history("https://api.coingecko.com/api/v3/coins/bitcoin/market_chart?vs_currency=eur&days=1");?>);
You read below link https://www.geeksforgeeks.org/how-to-pass-variables-and-data-from-php-to-javascript/
I have a need to be able to read the screen size during the execution of a php script. Since that it is a client side issue I created a small script that executes javascript to obtain the screen size. I call this script from my php program with curl. It work great .. almost. The value that is returned is correct but it is not in the form that can be used by php. I tried it by setting a cookie but the cookie value return is always the value from the previous call.
if you want to see it run go here: 3wings.com/testScreenSize.php
Thanks for your help.
testScreenSize.php Code:
<?php
define(HTTPS_SERVER,'http://3wings.com');
$br='<br>';
$url = HTTPS_SERVER. '/getScreenSize.html';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 600);
$ret = curl_exec($ch);
echo curl_error($ch);
curl_close($ch);
var_dump($ret);echo $br;
echo ' $ret '.$ret.$br;
$scrwidth = $ret*1;
echo ' scrwidth '.$scrwidth.$br;
$cookieval = $_COOKIE['scrwidth'];
echo ' $cookieval '.$cookieval.$br;
getScreenSize.html
<!DOCTYPE HTML>
<html>
<body>
<script>
var width = window.innerWidth;
document.cookie = "scrwidth=" + width + "; path=/";
document.writeln(width);</script>
</script>
</body>
</html>
So my problem is that I need to update some data from other site, and for calling that data I have php function where is the URL as parameter. ..So in JS I create a function that is in cycle with setInterval where I call that php function with URL parameter where are data stored, but it always return the same data..(data is actually playing track on stream, so data changed every +- 3 minutes) Data changes only on refresh page (f5) ..but I need update that data in background ..
this is the PHP function
function get_content($URL){
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $URL);
$data = curl_exec($ch);
curl_close($ch);
$data = str_replace(",,","},",$data);
$data = str_replace("}}]}}","}]}}",$data);
$data = str_replace("]}}","}]}}",$data);
$data = str_replace(",}}","}}}",$data);
$data = str_replace("}}]}}","}]}}",$data);
return $data;
In js I call in setInterval cycle only console.log to show result of php function..
console.log(<?php echo (get_content("http://server1.internetoveradio.sk:8809/status-json.xsl"));?>["icestats"]["source"])
Well, yeah. The PHP only gets called once in this case, the one time you echo out the contents of get_content();
If you want to get the content over and over again, use XmlHTTPRequest to call a PHP file which then returns the the result of get_content();
jQuery implements ajax ( XmlHTTPRequest ) to do exactly that.
jQuery.ajax({
url: "http://path.to/your_script.php",
method: "get",
complete: function( response ){
console.log(response);
}
});
edit:
Create a new .php file and paste this:
<?php
function get_content($URL){
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $URL);
$data = curl_exec($ch);
curl_close($ch);
$data = str_replace(",,","},",$data);
$data = str_replace("}}]}}","}]}}",$data);
$data = str_replace("]}}","}]}}",$data);
$data = str_replace(",}}","}}}",$data);
$data = str_replace("}}]}}","}]}}",$data);
return $data;
}
echo get_content("http://server1.internetoveradio.sk:8809/status-json.xsl");
In your html, add this:
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script>
jQuery(document).ready(function(){
jQuery.ajax({
url: "http://path.to/your_script.php",
method: "get",
complete: function( response ){
console.log(response);
}
});
});
</script>
This is the most rudimentory version, but it should point you in the right direction hopefully.
I'm trying to build a domain availability checker.
My PHP code is the following:
<?php
$domain = $_GET["domname"];
function get_data($url) {
$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
$returned_content = get_data('http://freedomainapi.com/?key=XXXXXXX&domain=' . $domain);
echo $returned_content;
?>
When called as such: /domchek.php?domname=google.com
The JSON output is:
{"status":"success","domain":"google.com","available":true}
The JQuery im using to call the script is as follows:
$.get("domchek.php?domname=google.com", {data: "available"}, function(json) {
$("html").html(json);
});
I just want to return the availability not the entire JSON output. I have tried json.availability and a number of other things but can't figure it out. Also if there is a better method for this than .get() please suggest it.
UPDATE:
$.getJSON("domchek.php?domname=google.com", function(json) {
$("html").html(json.status);
});
The above works as does returning json.domain but trying to return json.available - which I require returns nothing..
Change this line:
$("html").html(json);
to:
$("html").html(json.status);
UPDATE: to force the GET request data type to JSON, change to:
$.get("domchek.php?domname=google.com", {data: "available"}, function(json) {
$("html").html(json);
}, 'json');
I am trying to access and then print (or just be able to use) the source code of any website using PHP. I am not very experienced and am now thinking I might need to use JS to accomplish this. So far, the code below accesses the source code of a web page and displays the web page... What I want it to do instead is display the source code. Essentially, and most importantly, I want to be able to store the source code in some sort of variable so I can use it later. And eventually read it line-by-line - but this can be tackled later.
$url = 'http://www.google.com';
function get_data($url)
{
$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
echo get_data($url); //print and echo do the same thing in this scenario.
Consider using file_get_contents() instead of curl. You can then display the code on your page by replacing every opening bracket (<) with < and then outputting it to the page.
<?php
$code = file_get_contents('http://www.google.com');
$code = str_replace('<', '<', $code);
echo $code;
?>
Edit:
Looks like curl is actually faster than FGC, so ignore that suggestion. The rest of my post still stands. :)
You should try to print the result between <pre></pre> tags;
echo '<pre>' . get_data($url) . '</pre>';
I rewrote your function. The function can return the source with lines or without lines.
<?php
function get_data($url, $Addlines = false){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
$content = curl_exec($ch);
$content = htmlspecialchars($content); // Prevents the browser to parse the html
curl_close($ch);
if ($Addlines == true){
$content = explode("\n", $content);
$Count = 0;
foreach ($content as $Line){
$lines = $lines .= 'Line '.$Count.': '.$Line.'<br />';
$Count++;
}
return $lines;
} else {
$content = nl2br($content);
return $content;
}
}
echo get_data('https://www.google.com/', true); // Source code with lines
echo get_data('https://www.google.com/'); // Source code without lines
?>
Hope it gets you on your way.
Add a header Content-Type: text/plain
header("Content-Type: plain/text");
Use htmlspecialchars() in php to print the source code.
In your code, use
return htmlspecialchars($data);
instead of
return $data;