Fatal error: Call to undefined function curl_init()

Question

<?php
$filename = "xx.gif";
$handle = fopen($filename, "r");
$data = fread($handle, filesize($filename));

// $data is file data
$pvars   = array('image' => base64_encode($data), 'key' => IMGUR_API_KEY);
$timeout = 30;
$curl    = curl_init();

curl_setopt($curl, CURLOPT_URL, 'http://api.imgur.com/2/upload.xml');
curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $pvars);

$xml = curl_exec($curl);

curl_close ($curl);

var_dump($xml);
?>

I'm playing with the Imgur API, but it doesn't seems to work. PHP.net says that curl_init() is in PHP5, but my host says it isn't. How can I make this work?

Mark Stosberg · Answer 1 · 2017-12-23T14:50:11.273

131

On old versions of Debian and Ubuntu, you solved this by installing the Curl extension for PHP, and restarting the webserver. Assuming the webserver is Apache 2:

sudo apt-get install php5-curl
sudo service apache2 restart

On newer versions, the package name as changed:

sudo apt install php-curl

It's possible you'll need to install more:

sudo apt-get install curl libcurl3 libcurl3-dev;

edited Dec 23 '17 at 14:50

answered Nov 20 '11 at 03:15

Mark Stosberg

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I had to install more in ubuntu: "sudo apt-get install curl libcurl3 libcurl3-dev php5-curl; You'll know if it works because phpinfo() will get a new section with Curl info." – Kzqai Apr 25 '12 at 17:11
I expect that `sudo service apache2 restart` should work just as well? – tshepang Aug 28 '13 at 20:21
It's logical to assume that restart = stop + start, but with years of experience with Apache, it hasn't always in the case. I learned to use an explicit stop and then start to be safe. Sorry, I can't remember the specific potential problems, but you are welcome to use `restart` and see if it works for you. – Mark Stosberg Aug 29 '13 at 15:43
1

did the trick for me also with just sudo apt-get install php5-curl .. thanks! – mboy Sep 09 '14 at 11:48
`sudo service apache2 restart` merely restarts Apache. It is necessary to run this [following the CURL install] in order for Aache/PHP to pick up the added CURL packages, so they will work when the CURL infused PHP script is next run. But, I also found that I needed to include `php5-curl` to get satisfaction ;) – ReverseEMF Jun 21 '15 at 17:35
php5-curl Unable to locate packages after installing `curl libcurl3 libcurl3-dev`. what i am missing ? – captainchhala Dec 22 '17 at 11:43
@captainchhala Time has marched on since I answered this question 6 years ago. Are you sure you still need to installing PHP 5 and not PHP 7? – Mark Stosberg Dec 23 '17 at 01:12
@MarkStosberg i have solved the probelm with `sudo apt install php-curl` and by the way i didn't look at the timestamp :). – captainchhala Dec 23 '17 at 05:23

score 42 · Accepted Answer · answered Dec 09 '10 at 09:46

42

curl is an extension that needs to be installed, it's got nothing to do with the PHP version.

http://www.php.net/manual/en/curl.setup.php

answered Dec 09 '10 at 09:46

fire

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+1 And if you can't install the curl extension, you can try using shell_exec (or similar) with the curl command. Or you can probably "fake it" with fsockopen. – bogeymin Dec 09 '10 at 11:54
9

That page doesn't say a word about HOW TO install the extension. Any better resources? – matteo Oct 21 '14 at 12:01
Once you've installed the curl package, have a look in the php.ini file (within /etc). Search for curl. In mine (OpenBSD), I had to remove the comment on the line that said *extension=curl* – moo Apr 03 '20 at 13:30

score 14 · Answer 3 · answered Mar 07 '12 at 00:03

Don't have enough reputation to comment yet. Using Ubuntu and a simple:

sudo apt-get install php5-curl
sudo /etc/init.d/apache2 restart

Did NOT work for me.

For some reason curl.so was installed in a location not picked up by default. I checked the extension_dir in my php.ini and copied over the curl.so to my extension_dir

cp /usr/lib/php5/20090626/curl.so  /usr/local/lib/php/extensions/no-debug-non-zts-20090626

Hope this helps someone, adjust your path locations accordingly.

score 13 · Answer 4 · edited Oct 18 '18 at 13:19

13

For Ubuntu

Install Curl extension for PHP & restart apache server.

sudo apt-get install php5-curl
sudo service apache2 restart

For Windows

Problem arises because of not including the lib_curl.dll to PHP. also load following extension if not working,so those extension in php.ini or remove comment if already exist in php.ini file then remove comment.

extension=php_bz2.dll
extension=php_curl.dll
extension=php_dba.dll

Now restart apache server. If you get an error "Unable to Load php_curl.dll", copy SSLEAY32.PHP, libEAY32.dll (OpenSSL) Libraries to the System32 folder.

edited Oct 18 '18 at 13:19

Tukadiya Ramesh

40
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answered Aug 27 '11 at 19:02

Vinay

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The question was tagged as being about Ubuntu and Debian Linux. Your answer does not apply to those environments. – Mark Stosberg Jan 05 '16 at 16:09
1

@MarkStosberg Agreed. Updated answer. – Vinay Jan 06 '16 at 05:31
Not working at all. I do not know whats wrong in this command, but not working. I am using Ubuntu 16.04 – Banty Roy May 18 '16 at 10:25
Yes worked! This should be the accepted answer! At least for linux anyways. – Zuks Jun 14 '17 at 07:39

score 5 · Answer 5 · answered Aug 22 '18 at 14:58

5

for php 7.0 on ubuntu use

sudo apt-get install php7.0-curl

And finally,

sudo service apache2 restart

or

sudo service nginx restart

answered Aug 22 '18 at 14:58

Ewomazino Ukah

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find your version: $php --version version =7.X then install: $ sudo apt-get install php7.X-curl – Michael Nelles Nov 22 '18 at 19:21

score 4 · Answer 6 · answered Jun 25 '17 at 14:11

4

do this

sudo apt-get install php-curl

and restart server

sudo service apache2 restart

answered Jun 25 '17 at 14:11

Benjamin Gakami

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Thanks man.. was working in a competetion and I am not comfortable php, curl. Your answer helped me overcome a problem, that took me half a day. – jegadeesh Dec 21 '17 at 17:36

score 3 · Answer 7 · answered Mar 03 '18 at 16:38

Experienced this on ubuntu 16.04 running PHP 7.1.14. To resolve,first put this in a script and execute. It will return true if curl is installed and enabled,otherwise, it will return false.

<?php
    var_dump(extension_loaded('curl'));
?>

If it returns false, run

sudo apt-get install php7.1-curl

And finally,

sudo service apache2 restart

After the restart, the script will return true and hopefully, your error should be resolved.

score 2 · Answer 8 · answered Dec 23 '13 at 21:11

There is solution with all necessary details for Windows 7 x64:

http://www.youtube.com/watch?v=7qNTi1sEfE8

It is in French, but you can understand everything! I solved same problem, even don't speak French. :-)

Many answers forget to mention that you need to add new version of php_curl.dll file from this location: http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/

I added new version of php_curl.dll from archive php_curl-5.4.3-VC9-x64.zip to folders: C:\wamp\bin\php\php5.4.3\ext and C:\Windows\System32 and everything was fine!

score 0 · Answer 9 · answered Mar 20 '23 at 12:46

0

For Windows this worked for me. Go to php.ini file and remove the comment from the following lines

extension=bz2
extension=curl

Just remove the ; before each line to uncomment. Restart the server and this error will go away

answered Mar 20 '23 at 12:46

Omair Munir

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score -2 · Answer 10 · answered Jan 18 '17 at 21:07

This is from the official website. php.net

After installation of PHP.

Windows

Move to Windows\system32 folder: libssh2.dll, php_curl.dll, ssleay32.dll, libeay32.dll

Linux

Move to Apache24\bin folder libssh2.dll

Then uncomment extension=php_curl.dll in php.ini

score -3 · Answer 11 · edited Jan 05 '12 at 22:15

$ch = curl_init('http://api.imgur.com/2/upload.xml'); //initialising our url

curl_setopt($ch, CURLOPT_MUTE, 1);

curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);  //used for https headers 

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);  //used for https headers

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, urlencode($pvars));  
//the value we post

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //waiting for reponse, default value in php is zero ie, curls normally do not wait for a response

curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0'); 

$output = curl_exec($ch); //the real execution 
curl_close($ch);

echo $output;

Try this code. I am not sure about it. But i used it to send xml data to a remote url.

This is not an answer to the question. – Mark Stosberg Jan 05 '16 at 16:08 — Mark Stosberg, Jan 05 '16 at 16:08

Fatal error: Call to undefined function curl_init()

11 Answers11

This is from the official website. php.net

Windows

Linux