PHP 忒聊 綴豖 ヶ輛 pg_connection_status (PHP 4 = 4.2.0) 佽隴 pg_connection_status() 殿隙珨跺蟀諉腔袨怓﹝褫夔腔袨怓峈 PGSQL_CONNECTION_OK 睿 PGSQL_CONNECTION_BAD﹝ 統獗 pg_connection_busy()﹝ 綴豖 れ萸 ヶ輛 pg_connection_reset 奻珨撰 pg_convert