A PHP handler is a type of Apache Module. It contains libraries to determine the PHP process loading on the server. In Plesk, the PHP handlers can be managed with the help of the utility php_handler. This utility can be helpful in managing, replacing the PHP handler with another one and also to obtain information about the handlers in a plain text format or in JSON format. The following command is used to display the list of all registered PHP handlers in Plesk,
Command:
plesk bin php_handler --list