PHP Manual Function Reference Database Extensions Vendor Specific Database Extensions Informix Predefined Constants Resource Types Informix 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. IFX_SCROLL (integer) IFX_HOLD (integer) IFX_LO_RDONLY (integer) IFX_LO_WRONLY (integer) IFX_LO_APPEND (integer) IFX_LO_RDWR (integer) IFX_LO_BUFFER (integer) IFX_LO_NOBUFFER (integer)