Why does cURL always return a status code?

Question

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);
?>

Jon · Accepted Answer · 2011-04-03 09:35:33Z

4

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);

edited Apr 3, 2011 at 9:35

answered Apr 1, 2011 at 13:43

Jon

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1 Comment

Jon Over a year ago

@pensilhijau: Have a look at the update, maybe that will help?

xiaolong · Accepted Answer · 2012-06-26 18:24:19Z

4

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).

answered Jun 26, 2012 at 18:24

xiaolong

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Comments

Joseph Lust · Accepted Answer · 2011-04-01 13:49:17Z

3

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().

answered Apr 1, 2011 at 13:49

Joseph Lust

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Comments

ArtoAle · Accepted Answer · 2011-04-01 13:43:35Z

0

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)

answered Apr 1, 2011 at 13:43

ArtoAle

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2 Comments

pensilhijau Over a year ago

the url that i pointing is use https, is problem with that? and im use php 5.1

ArtoAle Over a year ago

No, it should be no problem...are you completly sure the page you are pointing is OK?

Community · Accepted Answer · 2017-05-23 11:59:07Z

0

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);

edited May 23, 2017 at 11:59

CommunityBot

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answered Apr 1, 2011 at 13:46

Phill Pafford

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Comments

alexg · Accepted Answer · 2014-03-22 09:11:23Z

0

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)

answered Mar 22, 2014 at 9:11

alexg

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