以下常量由此扩展定义,只有在扩展被编译到 PHP 中或在运行时动态加载时才可用。
NIL
(int)OP_DEBUG
(int)OP_READONLY
(int)OP_ANONYMOUS
(int)OP_SHORTCACHE
(int)OP_SILENT
(int)OP_PROTOTYPE
(int)OP_HALFOPEN
(int)OP_EXPUNGE
(int)OP_SECURE
(int)CL_EXPUNGE
(int)FT_UID
(int)FT_PEEK
(int)FT_NOT
(int)FT_INTERNAL
(int)FT_PREFETCHTEXT
(int)ST_UID
(int)ST_SILENT
(int)ST_SET
(int)CP_UID
(int)CP_MOVE
(int)SE_UID
(int)SE_FREE
(int)SE_NOPREFETCH
(int)SO_FREE
(int)SO_NOSERVER
(int)SA_MESSAGES
(int)SA_RECENT
(int)SA_UNSEEN
(int)SA_UIDNEXT
(int)SA_UIDVALIDITY
(int)SA_ALL
(int)LATT_NOINFERIORS
(int)LATT_NOSELECT
(int)LATT_MARKED
(int)LATT_UNMARKED
(int)LATT_REFERRAL
(int)LATT_HASCHILDREN
(int)LATT_HASNOCHILDREN
(int)SORTDATE
(int)SORTARRIVAL
(int)SORTFROM
(int)SORTSUBJECT
(int)SORTTO
(int)SORTCC
(int)SORTSIZE
(int)TYPETEXT
(int)TYPEMULTIPART
(int)TYPEMESSAGE
(int)TYPEAPPLICATION
(int)TYPEAUDIO
(int)TYPEIMAGE
(int)TYPEVIDEO
(int)TYPEMODEL
(int)TYPEOTHER
(int)ENC7BIT
(int)ENC8BIT
(int)ENCBINARY
(int)ENCBASE64
(int)ENCQUOTEDPRINTABLE
(int)ENCOTHER
(int)IMAP_OPENTIMEOUT
(int)IMAP_READTIMEOUT
(int)IMAP_WRITETIMEOUT
(int)IMAP_CLOSETIMEOUT
(int)IMAP_GC_ELT
(int)IMAP_GC_ENV
(int)IMAP_GC_TEXTS
(int)