# 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.

`BBCODE_TYPE_NOARG` (integer)
  This BBCode tag does not accept any arguments.
`BBCODE_TYPE_SINGLE` (integer)
  This BBCode tag does not have a corresponding close tag.
`BBCODE_TYPE_ARG` (integer)
  This BBCode tag need an argument.
`BBCODE_TYPE_OPTARG` (integer)
  This BBCode tag accept an optional argument.
`BBCODE_TYPE_ROOT` (integer)
  This BBCode tag is the special tag root (nesting level 0).
`BBCODE_FLAGS_ARG_PARSING` (integer)
  This BBCode tag require argument sub-parsing (the argument is also parsed by the BBCode extension). As Of 0.10.2 another parser can be used as argument parser.
`BBCODE_FLAGS_CDATA_NOT_ALLOWED` (integer)
  This BBCode Tag does not accept content (it voids it automatically).
`BBCODE_FLAGS_SMILEYS_ON` (integer) - since 0.10.2
  This BBCode Tag accepts smileys.
`BBCODE_FLAGS_SMILEYS_OFF` (integer) - since 0.10.2
  This BBCode Tag does not accept smileys.
`BBCODE_FLAGS_ONE_OPEN_PER_LEVEL` (integer) - since 0.10.2
  This BBCode Tag automatically closes if another tag of the same type is found at the same nesting level.
`BBCODE_FLAGS_REMOVE_IF_EMPTY` (integer) - since 0.10.2
  This BBCode Tag is automatically removed if content is empty it allows to produce lighter HTML.
`BBCODE_FLAGS_DENY_REOPEN_CHILD` (integer) - since 0.10.3
  This BBCode Tag does not allow unclosed children to reopen when automatically closed.
`BBCODE_ARG_DOUBLE_QUOTE` (integer) - since 0.10.2
  This is a parser option allowing argument quoting with double quotes (")
`BBCODE_ARG_SINGLE_QUOTE` (integer) - since 0.10.2
  This is a parser option allowing argument quoting with single quotes (')
`BBCODE_ARG_HTML_QUOTE` (integer) - since 0.10.2
  This is a parser option allowing argument quoting with HTML version of double quotes (&quot;)
`BBCODE_ARG_QUOTE_ESCAPING` (integer) - since 1.0.2
  This is a parser option allowing argument quotes to be escaped this permit the quote delimiter to be found in the string escaping character is \ it can escape any quoting character or itself, if found in front of a non escapable character, it will be dropped. Default behaviour is not to use escaping.
`BBCODE_AUTO_CORRECT` (integer) - since 0.10.2
  This is a parser option changing the way errors are treated. It automatically closes tag in the order they are opened. And treat tags with only an open tag as if there were a close tag present.
`BBCODE_CORRECT_REOPEN_TAGS` (integer) - since 0.10.2
  This is a parser option changing the way errors are treated. It automatically reopens tag if close tags are not in the good order.
`BBCODE_DISABLE_TREE_BUILD` (integer) - since 0.10.2
  This is a parser option disabling the BBCode parsing it can be useful if only the "smiley" replacement must be used.
`BBCODE_DEFAULT_SMILEYS_ON` (integer) - since 0.10.2
  This is a parser option setting smileys to ON if no flag is given at tag level.
`BBCODE_DEFAULT_SMILEYS_OFF` (integer) - since 0.10.2
  This is a parser option setting smileys to OFF if no flag is given at tag level.
`BBCODE_FORCE_SMILEYS_OFF` (integer) - since 0.10.2
  This is a parser option disabling completely the smileys parsing.
`BBCODE_SMILEYS_CASE_INSENSITIVE` (integer) - since 0.10.3
  Use a case insensitive Detection for smileys instead of a simple binary search.
`BBCODE_SET_FLAGS_SET` (integer) - since 0.10.2
  This permits to SET the complete flag set on a parser.
`BBCODE_SET_FLAGS_ADD` (integer) - since 0.10.2
  This permits to switch a flag set ON on a parser.
`BBCODE_SET_FLAGS_REMOVE` (integer) - since 0.10.2
  This permits to switch a flag set OFF on a parser.