Installation
In order to use FTP functions with your PHP configuration, you should add the --enable-ftp option when installing PHP.
The Windows version of PHP has built-in support for this extension. You do not need to load any additional extensions in order to use these functions.
Коментарии
If you are using PHP 7 under Windows you have to enable ftp in php.ini with extension=php_ftp.dll.On linux, one would enable ftp on their php7 server by uncommenting or adding the line "extension=ftp.so" in their php.ini file (likely at /etc/php/php.ini, unless the user moved it).For some reason folks downvoted the previous entry for this, BUT... indeed, as of PHP 7, to enable this on Windows you have to add the line:
extension=php_ftp.dll
to your php.ini to resolve PHP errors that tell you PHP FTP functions are not defined; the line isn't in there (where, many things are and are just commented out).