Description:
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From manual page: https://php.net/function.pg-get-result
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The documentation makes reader to believe that this function is asyncronous. For example:

"pg_get_result — Get asynchronous query result"
"pg_get_result() gets the result resource from an asynchronous query executed by ..."

However, in reality the behavior of pg_get_result() appears to be that it will
wait for the query to complete before returning if the query has not yet been
fully processed. As such, the function pg_get_result() is syncronous but it is
used to get results from an asyncronous function.

In addition, the description is unclear about if the expected style is to always repeatedly call pg_get_result() until FALSE is returned. Another way to use this
method is call this exactly once for each pg_send_query() that is supposed to contain one query.