How can one troubleshoot and resolve the issue of undefined function ftp_connect() in PHP?

The issue of undefined function ftp_connect() in PHP occurs when the FTP extension is not enabled in the PHP configuration. To resolve this, you need to enable the FTP extension in the php.ini file and restart the web server.

// Enable the FTP extension in php.ini file
// Uncomment or add the following line:
// extension=ftp

// Restart the web server for changes to take effect