(PHP 4, PHP 5)
preg_split — Split string by a regular expression
$limit= -1 [, int
$flags= 0 ]] )
Split the given string by a regular expression.
The pattern to search for, as a string.
The input string.
If specified, then only substrings up to
are returned with the rest of the string being placed in the last
limit of -1, 0 or
NULL means "no limit"
and, as is standard across PHP, you can use
NULL to skip to the
flags can be any combination of the following
flags (combined with the | bitwise operator):
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
subject at offset 1.
Returns an array containing substrings of
split along boundaries matched by
Example #1 preg_split() example : Get the parts of a search string
// 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
$str = 'string';
$chars = preg_split('//', $str, -1, PREG_SPLIT_NO_EMPTY);
Example #3 Splitting a string into matches and their offsets
$str = 'hypertext language programming';
$chars = preg_split('/ /', $str, -1, PREG_SPLIT_OFFSET_CAPTURE);
The above example will output:
Array (  => Array (  => hypertext  => 0 )  => Array (  => language  => 10 )  => Array (  => programming  => 19 ) )