Anything wrong with my cURL code (http status of 0)?

Question

Consistently getting a status of 0 even though if I copy and paste the url sent into my browser, I get a json object right back

<?php


$mainUrl = "https://api.xxxx.com/?";
$co = "xxxxx";
$pa = "xxxx";
$par = "xxxx";
$part= "xxxx";
$partn = "xxxx";
$us= "xxx";
$fields_string;
$fields = array(
            'co'=>urlencode($co),
            'pa'=>urlencode($pa),
            'par'=>urlencode($par),
            'part'=>urlencode($part),
            'partn'=>urlencode($partn),
            'us'=>urlencode($us)
            );

foreach($fields as $key=>$value) { $fields_string .= $key . '=' . $value . '&' ;}

$fields_string = rtrim($fields_string, "&");
$fields_string = "?" . $fields_string;

$url = "https://api.xxxxx.com/" . $fields_string;

$request =  $url; 

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT,'3');
$content = trim(curl_exec($ch));
$http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);

curl_close($ch);
print $url;
print $http_status;
print $content; 



?>

just an unrelated side note: PHP has a very handy http_build_query function. php.net/manual/en/function.http-build-query.php — nico
– nico, Commented Dec 31, 2010 at 15:53
Yup, just realized that checking the error would be helpful. — Ilya
– Ilya, Commented Dec 31, 2010 at 16:13

Ilya · Accepted Answer · 2010-12-31 16:13:58Z

25

Realized that I was having SSL issues. Simply set CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST to false. Works.

answered Dec 31, 2010 at 16:13

Ilya

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2 Comments

joelcox Over a year ago

If you wish to use SSL, you can add the CURLOPT_CAINFO flag and point to a certificate. Like 'curl_setopt($curl, CURLOPT_CAINFO, BASE_DIR . '/certs/cacert.pem');'

Benjamin Seiller Over a year ago

@Xoc: +1 from me for pointing out that a secure connection is an option here.

Henry · Accepted Answer · 2011-08-15 23:05:24Z

16

FYI, you can also get a status code of 0 if the curl connection times out before the remote server returns data. In that case you need to set curl time out options to avoid that situation. Just posting this for anyone else having status 0 problems.

answered Aug 15, 2011 at 23:05

Henry

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1 Comment

Jus12 Over a year ago

Details on how to set the curl time out are here stackoverflow.com/a/11066378/243233

Folding Circles · Accepted Answer · 2012-12-28 23:42:51Z

9

I had the same problem, You MUST run the curl_exec($ch) command before you run the curl_getinfo($ch) command.

answered Dec 28, 2012 at 23:42

Folding Circles

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1 Comment

Magnus Over a year ago

Perfect! This was the problem for me!

fresher · Accepted Answer · 2013-12-20 05:33:37Z

so try this you will get positive results i have added CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST to false

<?php


$mainUrl = "https://api.xxxx.com/?";
$co = "xxxxx";
$pa = "xxxx";
$par = "xxxx";
$part= "xxxx";
$partn = "xxxx";
$us= "xxx";
$fields_string;
$fields = array(
            'co'=>urlencode($co),
            'pa'=>urlencode($pa),
            'par'=>urlencode($par),
            'part'=>urlencode($part),
            'partn'=>urlencode($partn),
            'us'=>urlencode($us)
            );

foreach($fields as $key=>$value) { $fields_string .= $key . '=' . $value . '&' ;}

$fields_string = rtrim($fields_string, "&");
$fields_string = "?" . $fields_string;

$url = "https://api.xxxxx.com/" . $fields_string;

$request =  $url; 

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_TIMEOUT,'3');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,false);
$content = trim(curl_exec($ch));
$http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);

curl_close($ch);
print $url;
print $http_status;
print $content; 



?>

koan · Accepted Answer · 2010-12-31 16:15:54Z

3

You should always set the option CURLOPT_VERBOSE when you are debugging for curl. Your timeout value looks very low.

answered Dec 31, 2010 at 16:15

koan

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