PHP Manual Function Reference Mail Related Extensions Cyrus Predefined Constants Resource Types Cyrus Functions Predefined Constants The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime. CYRUS_CONN_NONSYNCLITERAL (integer) CYRUS_CONN_INITIALRESPONSE (integer) CYRUS_CALLBACK_NUMBERED (integer) CYRUS_CALLBACK_NOLITERAL (integer)