How to Fix the PHP Fatal Error: Call to undefined function curl_init()?

PHP Fatal Error: Undefined Function curl_init()

To resolve the "Call to undefined function curl_init()" error in PHP, the cURL extension must be installed and enabled.

cURL Installation and Activation

Ubuntu:

sudo apt-get install php5-curl

Other Systems:

Install cURL using your package manager or follow the instructions in the PHP cURL documentation (https://www.php.net/manual/en/book.curl.php).

Restart Apache

Restart your web server to load the cURL extension:

Apache:

sudo /etc/init.d/apache2 restart

Nginx:

sudo systemctl restart nginx

Verifying Installation

Use phpinfo() to confirm that cURL is installed and enabled:

<?php phpinfo();
?>

If cURL is installed correctly, you should see the "cURL" section in the output.

Additional Information

• If you continue to encounter issues, check the PHP configuration file (php.ini) to ensure that the cURL extension is uncommented.
• You can also try using the curl_version() function to verify the cURL version installed on your system.

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