Why Am I Getting \'Call to undefined function curl_init()\'?

Call to undefined function curl_init()? [duplicate]

When implementing the Authorize.net payment gateway, the error "Call to undefined function curl_init()" may arise. This error signifies that the PHP cURL extension is not enabled or installed.

Solution:

For Windows users:

• Locate your php.ini file.

• Uncomment the following line by removing the semicolon (;):

  extension=php_curl.dll

• Save the php.ini file and restart your HTTP server (e.g., Apache).

For Ubuntu 13.0 and above users:

• Install the debundled PHP cURL package:

  sudo apt-get install php-curl

  • Or, for PHP5:

    sudo apt-get install php5-curl

    • Or, for PHP5.6:

      sudo apt-get install php5.6-curl

• Restart Apache to activate the package:

  sudo service apache2 restart

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