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php中文网手册 发布
(PHP 5 >= 5.6.0)
pg_connect_poll — Poll the status of an in-progress asynchronous PostgreSQL connection attempt.
$connection
] ) pg_connect_poll() polls the status of a PostgreSQL
connection created by calling pg_connect() with the
PGSQL_CONNECT_ASYNC option.
connection PostgreSQL database connection resource.
Returns PGSQL_POLLING_FAILED ,
PGSQL_POLLING_READING ,
PGSQL_POLLING_WRITING ,
PGSQL_POLLING_OK , or
PGSQL_POLLING_ACTIVE .