Call to undefined function curl_init() [duplicate]

Question

Possible Duplicate:
curl_init() function not working

I am using PHP for accessing the Foursquare API. I have set up everything for the authentication with Foursquare. But as soon as I click on the "Allow" button, my callback.php gives me the following error:

Fatal error: Call to undefined function curl_init() in C:\wamp\www\EpiFoursquare.php on line 119

Call Stack

Time    Memory  Function                          Location
0.0007  372592  {main}( )                         ..\callback.php:0
0.0039  571896  EpiFoursquare->getAccessToken( )  ..\callback.php:17
0.0040  572928  EpiFoursquare->request( )         ..\EpiFoursquare.php:31

Where does this error come from? I cannot find the origin. Please help me out.

Joanne

The issue has nothing to do with foursquare at all. Turn on curl module in php. "I just dont know, why it is originating." --- why don't you read error message then?! – Tinney

sir actually I am getting this error, it say "Fatal error: Call to undefined function curl_init() in C:\wamp\www\EpiFoursquare.php on line 119" and all the necessary files are placed in the folder, like callback.php, index.php, EpiCurl.php – Joanne

curl is a php extension nz.php.net/manual/en/curl.installation.php – Tinney

I am connected to 4square web site, on callback, it must f=give me the access token. but when I echo $token["access_token"], it is empty. – Joanne

any one please help me out. error is actually "Fatal error: Uncaught exception 'EpiFoursquareBadRequestException' with message '{"error":"redirect_uri_mismatch"}' in /home/apmtpuci/public_html/4square/EpiFoursquare.php:244 Stack trace: #0 /home/apmtpuci/public_html/4square/EpiFoursquare.php(208): EpiFoursquareException::raise(Object(EpiCurlManager), false) #1" – Joanne

Answer 1

You need to initialize the cURL extension: http://php.net/manual/en/curl.installation.php

Tinney

I did this by enabling the php_curl.dll extension in the php.ini file (as FlatLander also mentions). Since I use WAMP Server, I did not need to do anything else, as the ssleay32.dll, libeay32.dll, and php_curl.dll files are already in the right places inside my C:\wamp\ directory. – Gyno

Answer 2

1. remove ; from extension=php_curl.dll in php.ini ;
2. ensure that ssleay32.dll and libeay32.dll are in Windows/system32 ;
3. copy php_curl.dll into Windows\System32 as well.

This worked for me!

Permatron

I tried this but it did not work for me. I am not sure if thing have been updated in the last few years. I am using PHP 5.6.13. As above I had to remove ; from extension=php_curl.dll in php.ini, I also had to remove ; from extension_dir = "ext" in php.ini. – Levitus