Why Am I Getting a \'PHP Fatal Error: Undefined Function \'curl_init()\'\'?

PHP Fatal Error: Undefined Function 'curl_init()'

Problem:

When attempting to send a POST request in PHP, the following error is encountered:

PHP Fatal error: Call to undefined function curl_init()

In-depth Analysis:

This error indicates that the PHP library lacks support for cURL, which is a vital component for sending HTTP requests. cURL is not a native PHP function, so it must be installed and enabled separately.

Solution:

To resolve this issue, follow these steps:

1. Install cURL support for PHP:

   • Ubuntu:

     sudo apt-get install php5-curl

   • Other platforms: Refer to the PHP cURL installation manual.

2. Edit PHP configuration if needed:

   If you are not using apt-get, you may need to manually edit the PHP configuration file (php.ini) and add the following line:

   extension=php_curl.so

3. Restart web server:

   After installing cURL support, restart your web server for the changes to take effect.

   sudo /etc/init.d/apache2 restart

4. Verify installation:

   To ensure that cURL is installed and enabled, use the phpinfo() function to check if it is listed. If cURL is not listed, you may need to seek further assistance to resolve installation issues.

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