1. A method for monitoring a business transaction and associated resource usage, the method comprising: receiving, by a server, a plurality of PHP: hypertext preprocessor (PHP) requests; analyzing, by an agent installed on the server, each PHP request to detect an identifier representing a business transaction associated with each received PHP request; initiating monitoring of the received PHP requests by the agent, each associated with a corresponding business transaction; determining resource usage, by the agent, by each PHP request associated with the corresponding business transaction as each PHP request is executed; stitching together the determined resource usage by all PHP requests, from the received PHP requests, associated with the same business transaction based on the determined identifier for each PHP request; and reporting the stitched together resource usage by the PHP requests associated with the same business transaction to indicate a total resource usage for the same business transaction.