[Programmatic]

I looked at the two linked pieces of documentation, and to my naive eyes they look like they perform the same task:

PHP: "Bound parameters minimize bandwidth to the server as you need send only the parameters each time, and not the whole query", meaning that the statement is prepared server-side and parameters are sent separately.

Postgres: "A prepared statement is a server-side object that can be used to optimize performance. When the PREPARE statement is executed, the specified statement is parsed, analyzed, and rewritten. When an EXECUTE command is subsequently issued, the prepared statement is planned and executed.... Prepared statements only last for the duration of the current database session. When the session ends, the prepared statement is forgotten, so it must be recreated before being used again."

Is there a difference between the two, and could you elaborate?