Hello I am having a very weird problem. I am writing this code to get the data from the koncat api
$url = 'https://api.kontakt.io/beacon/?device';
$privKey = 'key here';
$cURL = curl_init();
curl_setopt($cURL, CURLOPT_URL, $url);
curl_setopt($cURL, CURLOPT_HTTPGET, true);
curl_setopt($cURL, CURLOPT_HTTPHEADER, array("Api-Key: ".$privKey,
"Accept: application/vnd.com.kontakt+json;version=5",
"Content-Type: application/x-www-form-urlencoded"));
$result = curl_exec($cURL);
The problem is Data is successfully printing on the screen but I don't know which variable here is printing out the data. I didn't use echo command in my code. If I print out the result variable it prints out only '1' meaning success.
The php documentation about curl_exec says that it will return true or fail on failure. curl_exec will also print the result directly into the output.
If you don't want that, you need to set the curl option CURLOPT_RETURNTRANSFER to 1. This will tell curl_exec to return the result on sucess.
Documentation about CURLOPT_RETURNTRANSFER:
CURLOPT_RETURNTRANSFER TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly.
More information:
http://php.net/curl_exec
http://php.net/curl_setopt
Related
I have a problem when I run this script in Google Chrome I got a blank page. When I use another link of a web site, it works successfully. I do not what is happening.
$curl = curl_init();
$url = "https://www.danmurphys.com.au/dm/home";
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
$output = curl_exec($curl);
echo $output;
There are some conditions which make your result blank. Such as:
Curl error.
Redirection without response body and the curl doesn't follow the redirection.
The target host doesn't give any response body.
So here you have to find out the problem.
For the first possibility, use curl_error and curl_errno to confirm that the curl wasn't errored when its runtime.
For the second, use CURLOPT_FOLLOWLOCATION option to make sure the curl follows the redirection.
For the third possibility, we can use curl_getinfo. It returns an array which contains "size_download". The size_download shows you the length of the response body. If it is zero that is why you see a blank page when printing it.
One more, try to use var_dump to see the output (debug purpose only). There is a possibility where the curl_exec returns bool false or null. If you print the bool false or null it will show a blank.
Here is the example to use all of them.
<?php
$curl = curl_init();
$url = "https://www.danmurphys.com.au/dm/home";
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
$output = curl_exec($curl);
$info = curl_getinfo($curl);
$err = curl_error($curl);
$ern = curl_errno($curl);
if ($ern) {
printf("An error occurred: (%d) %s\n", $ern, $err);
exit(1);
}
curl_close($curl);
printf("Response body size: %d\n", $info["size_download"]);
// Debug only.
// var_dump($output);
echo $output;
Hope this can help you.
Update:
You can use CURLOPT_VERBOSE to see the request and response information in details.
Just add this
curl_setopt($curl, CURLOPT_VERBOSE, true);
It doesn't need to be printed, the curl will print it for you during runtime.
I'm trying to write a simple curl function that queries the freegeoip.net site with the IP address of a site visitor. This is usually done by typing "https://freegeoip.net/csv/{IP Address}" in the browser address line. The site then processes the request and returns a csv file that can be opened or saved. I'm trying to access the csv data directly so that I can parse and use it. This is the code that I am using:
<?php
$ip=$_SERVER["REMOTE_ADDR"];
$geturl = "http://freegeoip.net/csv/".$ip;
$data = curl_get_contents($geturl);
echo ("<br>Data = '".$data."'<br>");
function curl_get_contents($url)
{
$ch = curl_init($url);
if($ch)
{
$tmp = curl_exec($ch);
curl_close($ch);
return $tmp;
}
else
{
echo "Curl not loaded!<br>";
}
}
?>
This is what I am getting back:
...,US,United States,ST,State,City,?????,America/New_York,.*****,-.****,***
Data = '1'
As you can see, my function is accessing and showing the csv data but not returning it to the $data variable. Apparently, the data is being shown when the "curl_exec($ch);" command is being executed. I want to parse and use the returned data but can't until the data is returned. What am I doing wrong?
The documentation of curl_exec() says:
Return Values
Returns TRUE on success or FALSE on failure. However, if the CURLOPT_RETURNTRANSFER option is set, it will return the result on success, FALSE on failure.
What it doesn't say is explained in the documentation page of curl_setopt(), on the CURLOPT_RETURNTRANSFER option:
Option: CURLOPT_RETURNTRANSFER
Set value to: TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly.
That is, by default, curl_exec() outputs the body of the response it gets. In order to make it return the value and not output it, you have to use curl_setopt():
$ch = curl_init($url);
curl_exec($ch, CURLOPT_RETURNTRANSFER, TRUE);
$result = curl_exec($ch);
curl_close($ch);
you need to add following line before curl_exec other wise the result will output instead of returning it to $tmp variable.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
You aren't telling Curl that you want the data to be returned rather than output:
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);
curl_setopt($ch, CURLOPT_URL, "http://freegeoip.net/csv/".$ip);
$csv=curl_exec($ch);
But this is rather verbose when, depending on your config, you can:
$csv=file_get_contents("http://freegeoip.net/csv/".$ip);
I'm trying to pull data using CURL in PHP like this
$ch = curl_init();
$headers = array('Content-type: text/xml',"openapikey:da21d9s56ekr33");
curl_setopt($ch, CURLOPT_URL, "http://api.test.co.un/rest/cateservice/category");
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_FAILONERROR,1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
$return = curl_exec($ch);
print_r($return);
print_r(gettype($return)); //prints string
but i got the response in full string when the response supposed to be in xml format, and when i print the type of the response variable it prints string. I tried using Postman to check the response and it returns the correct format in XML mode:
and when i change to Preview mode in Postman, it showed the same result as what my CURL response in php shows, which is full string:
most likely, you're getting the correct response, its just your browser not rendering it the way you expected it to. what happens if, at the top of your code, you add header("content-type: text/plain;charset=utf8"); ? my guess, it will render the code the way you expected it to. alternatively, html encode it, like
function hhb_tohtml(string $str):string
{
return htmlentities($str, ENT_QUOTES | ENT_HTML401 | ENT_SUBSTITUTE | ENT_DISALLOWED, 'UTF-8', true);
}
print_r(hhb_tohtml($return));
print_r(gettype($return)); //prints string
I'm using github's api to pull the most popular "starred" items under PHP, and it's pulling the json string ok. Only issue is my json_decode is still just dumping the JSON string and not an object. Below is the function I'm running.
private function fillTable(){
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://api.github.com/search/repositories?q=+language:php&sort=stars&order=desc',
CURLOPT_USERAGENT => 'trickell'
));
$res = curl_exec($curl);
var_dump(json_decode($res));
}
I'm not exactly sure why it's not decoding the json string to an object. If you run this you should be able to see exactly what's pulling.
Because you have no json to decode and that is because you are not telling cURL to return the value to you so you are trying to decode an empty string.
$res = curl_exec($curl);
That $res is going to be only TRUE / FALSE unless you ask for RETURNTRANSFER, as explained here
curl_exec
Returns TRUE on success or FALSE on failure. However, if the CURLOPT_RETURNTRANSFER option is set, it will return the result on success, FALSE on failure.
So you have to add another option to your cURL call.
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
You may ask then why are you seeing the JSON string if it is not being returned, this answers that question
CURLOPT_RETURNTRANSFER
TRUE to return the transfer as a string of the return value of curl_exec() instead of outputting it out directly.
(emphasis mine)
<?php
$post = ['batch_id'=> "2"];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,'https://example.com/student_list.php');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($post));
$response = curl_exec($ch);
$result = json_decode($response);
$new= $result->status;
if( $new =="1")
{
echo "<script>alert('Student list')</script>";
}
else
{
echo "<script>alert('Not Removed')</script>";
}
?>
You are missing this:
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Accept: application/json'
));
I have some PHP code that calls into the cURL library. I'm using it to get JSON data.
I have set cURL opt 'CURLOPT_RETURNTRANSFER' to 1, but still get status code..
Code follows:
<?php
function fetch_page($url)
{
$ch = curl_init();
$array = array(
'include'=>'ayam'
);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $array);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec ($ch);
curl_close ($ch);
return $result;
}
$return = fetch_page(MY_LINK_URL);
echo json_decode($return);
?>
The code looks totally correct. Try var_dump($result) before returning it to see what it is exactly.
Also, set CURLOPT_HEADER to 1 and check the view source of the output in your browser; both of these can help debug the issue. Edit the question and post the results if so we can help more effectively.
Update: Since you are using HTTPS, also add
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
That looks correct. I actually have the same problem, but when I added
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
it returns json code correctly instead of returning 1(True).
According to the PHP docs,
Returns TRUE on success or FALSE on
failure. However, if the
CURLOPT_RETURNTRANSFER option is set,
it will return the result on success,
FALSE on failure.
So that means you should get
success: the result
failure: FALSE (which is echoed as 0)
Also, if you are fetching JSON, and need to access it, use json_decode() not json_encode().
Well, you should tell us wich url you're pointing (and wich version of php you are running).
I've tried with php 5.3 on "www.google.com" and it worked as expected ($result contains the whole webpage)
Might of had a similar problem:
- cURL on local dev network problem with virtual host naming
Before you close your curl handle output this:
$result = curl_exec ($ch);
print_r(curl_getinfo($ch));
curl_close ($ch);
Here was my solution for getting around the virtual host
// This is your Virtual Hosts name
$request_host = 'dev.project';
// This is the IP
$request_url = '192.168.0.1';
$headers = array("Host: ".$request_host);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_URL, $request_url.'?'.$request_args);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
There seems to be a number of reasons why CURLOPT_RETURNTRANSFER can be ignored, and SSL certificate checking is only one of them:
In my case the culprit was CURLOPT_POST which I had set to true. I was expecting to get back a string consisting of the HTTP response header plus the response itself. Instead I was getting status code 1. Go figure. Thankfully I did not need the HTTP header so the solution for me was:
curl_setopt($ch, CURLOPT_HEADER, false);
If I did need the header info, I don't know what I would do. I've wasted an insane amount of time tracking down the problem.
Damn you PHP curl! (waves fist in anger)