(PECL bbcode >= 0.9.0)
bbcode_add_element — Adds a bbcode element
Adds a tag to an existing BBCode_Container tag_set using tag_rules.
BBCode_Container resource, returned by bbcode_create().
The new tag to add to the BBCode_Container tag_set.
An associative array containing the parsing rules; see bbcode_create() for the available keys.
成功时返回 TRUE, 或者在失败时返回 FALSE.