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.
CRYPT_SALT_LENGTH
     integer
   CRYPT_STD_DES
     integer
   CRYPT_EXT_DES
     integer
   CRYPT_MD5
     integer
   CRYPT_BLOWFISH
     integer
   HTML_SPECIALCHARS
     (integer)
   HTML_ENTITIES
     (integer)
   ENT_COMPAT
     (integer)
   ENT_QUOTES
     (integer)
   ENT_NOQUOTES
     (integer)
   ENT_IGNORE
     (integer)
   ENT_SUBSTITUTE
     (integer)
   ENT_DISALLOWED
     (integer)
   ENT_HTML401
     (integer)
   ENT_XML1
     (integer)
   ENT_XHTML
     (integer)
   ENT_HTML5
     (integer)
   CHAR_MAX
     (integer)
   LC_CTYPE
     (integer)
   LC_NUMERIC
     (integer)
   LC_TIME
     (integer)
   LC_COLLATE
     (integer)
   LC_MONETARY
     (integer)
   LC_ALL
     (integer)
   LC_MESSAGES
     (integer)
   STR_PAD_LEFT
     (integer)
   STR_PAD_RIGHT
     (integer)
   STR_PAD_BOTH
     (integer)