Call to undefined function curl_init()? [duplicate]

This question already has answers here: PHP Fatal error: Call to undefined function curl_init() (24 answers) 开发者_StackOverflow Closed 5 years ago.

When i am going to implement Authorize.net payment gateway. However, I got this error:

Call to undefined function curl_init()

Please let me know what is wrong in it.

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If you're on Windows:

Go to your php.ini file and remove the ; mark from the beginning of the following line:

;extension=php_curl.dll

After you have saved the file you must restart your HTTP server software (e.g. Apache) before this can take effect.

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For Ubuntu 13.0 and above, simply use the debundled package. In a terminal type the following to install it and do not forgot to restart server.

sudo apt-get install php-curl

Or if you're using the old PHP5

sudo apt-get install php5-curl

or

sudo apt-get install php5.6-curl

Then restart apache to activate the package with

sudo service apache2 restart

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The CURL extension ext/curl is not installed or enabled in your PHP installation. Check the manual for information on how to install or enable CURL on your system.