note 102748 added to regexp.reference.recursive

Here's an approach to create a multidimensional array according to a string's delimiters, i.e. we want to analyze...

"some text (aaa(b(c1)(c2)d)e)(test) more text"

... as multidimensional layers.

<?php
$string = "some text (aaa(b(c1)(c2)d)e)(test) more text";

/*
 * Analyses the string multidimensionally by its opening and closing delimiters
 */
function recursiveSplit($string, $layer) {
	preg_match_all("/\((([^()]*|(?R))*)\)/",$string,$matches);
	// iterate thru matches and continue recursive split
	if (count($matches) > 1) {
		for ($i = 0; $i < count($matches[1]); $i++) {
			if (is_string($matches[1][$i])) {
				if (strlen($matches[1][$i]) > 0) {
					echo "<pre>Layer ".$layer.":   ".$matches[1][$i]."</pre><br />";
					recursiveSplit($matches[1][$i], $layer + 1);
				}
			}
		}
	}
}

recursiveSplit($string, 0);

/*

Output:

Layer 0:   aaa(b(c1)(c2)d)e

Layer 1:   b(c1)(c2)d

Layer 2:   c1

Layer 2:   c2

Layer 0:   test
*/
?>
----
Server IP: 69.147.83.197
Probable Submitter: 80.219.172.48
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Manual Page -- http://www.php.net/manual/en/regexp.reference.recursive.php
Edit        -- https://master.php.net/note/edit/102748
Del: integrated  -- https://master.php.net/note/delete/102748/integrated
Del: useless     -- https://master.php.net/note/delete/102748/useless
Del: bad code    -- https://master.php.net/note/delete/102748/bad+code
Del: spam        -- https://master.php.net/note/delete/102748/spam
Del: non-english -- https://master.php.net/note/delete/102748/non-english
Del: in docs     -- https://master.php.net/note/delete/102748/in+docs
Del: other reasons-- https://master.php.net/note/delete/102748
Reject      -- https://master.php.net/note/reject/102748
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