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.
NIL 
    (integer)
   OP_DEBUG 
    (integer)
   OP_READONLY 
    (integer)
   OP_ANONYMOUS 
    (integer)
   OP_SHORTCACHE 
    (integer)
   OP_SILENT 
    (integer)
   OP_PROTOTYPE 
    (integer)
   OP_HALFOPEN 
    (integer)
   OP_EXPUNGE 
    (integer)
   OP_SECURE 
    (integer)
   CL_EXPUNGE 
    (integer)
   FT_UID 
    (integer)
   FT_PEEK 
    (integer)
   FT_NOT 
    (integer)
   FT_INTERNAL 
    (integer)
   FT_PREFETCHTEXT 
    (integer)
   ST_UID 
    (integer)
   ST_SILENT 
    (integer)
   ST_SET 
    (integer)
   CP_UID 
    (integer)
   CP_MOVE 
    (integer)
   SE_UID 
    (integer)
   SE_FREE 
    (integer)
   SE_NOPREFETCH 
    (integer)
   SO_FREE 
    (integer)
   SO_NOSERVER 
    (integer)
   SA_MESSAGES 
    (integer)
   SA_RECENT 
    (integer)
   SA_UNSEEN 
    (integer)
   SA_UIDNEXT 
    (integer)
   SA_UIDVALIDITY 
    (integer)
   SA_ALL 
    (integer)
   LATT_NOINFERIORS 
    (integer)
   LATT_NOSELECT 
    (integer)
   LATT_MARKED 
    (integer)
   LATT_UNMARKED 
    (integer)
   SORTDATE 
    (integer)
   SORTARRIVAL 
    (integer)
   SORTFROM 
    (integer)
   SORTSUBJECT 
    (integer)
   SORTTO 
    (integer)
   SORTCC 
    (integer)
   SORTSIZE 
    (integer)
   TYPETEXT 
    (integer)
   TYPEMULTIPART 
    (integer)
   TYPEMESSAGE 
    (integer)
   TYPEAPPLICATION 
    (integer)
   TYPEAUDIO 
    (integer)
   TYPEIMAGE 
    (integer)
   TYPEVIDEO 
    (integer)
   TYPEMODEL 
    (integer)
   TYPEOTHER 
    (integer)
   ENC7BIT 
    (integer)
   ENC8BIT 
    (integer)
   ENCBINARY 
    (integer)
   ENCBASE64 
    (integer)
   ENCQUOTEDPRINTABLE 
    (integer)
   ENCOTHER 
    (integer)
   IMAP_OPENTIMEOUT 
    (integer)
   IMAP_READTIMEOUT 
    (integer)
   IMAP_WRITETIMEOUT 
    (integer)
   IMAP_CLOSETIMEOUT 
    (integer)
   LATT_REFERRAL 
    (integer)
   LATT_HASCHILDREN 
    (integer)
   LATT_HASNOCHILDREN 
    (integer)
   IMAP_GC_ELT 
    (integer)
   IMAP_GC_ENV 
    (integer)
   IMAP_GC_TEXTS 
    (integer)