注: Parameter flags was added in PHP 4 Beta 3.
Returns an array containing substrings of subject split along boundaries
matched by pattern.
If limit is specified,
then only substrings up to
limit are returned, and if
limit is -1, it actually means "no limit", which is
useful for specifying the
flags.
flags can be any
combination of the following flags (combined with bitwise |
operator):
If this flag is set, only non-empty pieces will be
returned by preg_split().
If this flag is set, parenthesized expression in
the delimiter pattern will be captured and returned as
well. This flag was added for 4.0.5.
If this flag is set, for every occuring match the
appendant string offset will also be returned. Note
that this changes the return value in an array where
every element is an array consisting of the matched
string at offset 0 and it's
string offset into
subject at offset 1.
This flag is available since
PHP 4.3.0 .
See also spliti(), split(),
implode(), preg_match(),
preg_match_all(), and
preg_replace().