If 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
flags
can be any combination of the following
flags (combined with bitwise | operator):
PREG_SPLIT_NO_EMPTY
If this flag is set, only non-empty pieces will be returned by
preg_split().
PREG_SPLIT_DELIM_CAPTURE
If this flag is set, parenthesized expression in the delimiter pattern
will be captured and returned as well.
PREG_SPLIT_OFFSET_CAPTURE
If this flag is set, for every occurring 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 its string offset
into subject
at offset 1.
Return Values
Returns an array containing substrings of subject
split along boundaries matched by pattern
.
ChangeLog
Version
Description
4.3.0
The PREG_SPLIT_OFFSET_CAPTURE was added
4.0.5
The PREG_SPLIT_DELIM_CAPTURE was added
4.0.0
The flags
parameter was added
Examples
Example #1 preg_split() example : Get the parts of a search string
<?php // split the phrase by any number of commas or space characters, // which include " ", \r, \t, \n and \f $keywords = preg_split("/[\s,]+/", "hypertext language, programming"); ?>
Example #2 Splitting a string into component characters