Description:
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FROM MANUAL (mysql_pconnect):
First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, username and password. If one is found, an identifier for it will be returned instead of opening a new connection.

that's ok, but i'm using pcntl with fork, one process is priority 20 and the other -20,
when i use mysql_query i first mysql_Select_db and after mysql_query, (with mysql_db_query the same thing occur)
one process is database "dev_comercial" and the other is "dev"

if mysql_pconnect add an new parameter that could be default_database and just use link resources with same default_database my error don't occur

when i select on process one and process two at samy time, one process get unknown table on dev when it must use dev_comercial database and not dev database

any idea? i'm using mysql_connect as an workaround but it get many connection and reconnection overhead

Reproduce code:
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fork
pid 1:
mysql_pconnect()
mysql_db_select( dev_comercial )
mysql_Query
error: table "table" unknown on database "dev" (pid2 executed mysql_db_select after pid1 mysql_dbselect and before mysql_query)

pid 2:
mysql_pconnect()
mysql_db_select( dev )
mysql_Query

error: no error table is on dev database

Expected result:
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get mysql_query from pid1 and pid2 without pid1 or pid2 changing database of pid1 or pid2

Actual result:
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one mysql_select_db change database from pid1 and pid2 cause they are the same link resource
if i get diferent link resource no problem occur