<?php

#  Copyright (C) 2007 Jason Woofenden
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#  
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#  
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.


# This file contains code to convert an array of strings into a string, and back again.

function string_to_array($data) {
	$pos = 0;
	$max = strlen($data);
	$out = array();
	while($pos < $max) {
		$sep = stripos($data, ' ', $pos);
		if ($sep == -1 || $sep == $pos) {
			return $out;
		}
		$size = (int) substr($data, $pos, $sep - $pos);
		$pos = $sep + 1;
		$out[] = substr($data, $pos, $size);
		$pos += $size;
	}
	return $out;
}

function array_to_string($array) {
	$ret = '';
	foreach($array as &$element) {
		if (is_string($element)) {
			$ret .= strlen($element) . ' ';
			$ret .= $element;
		}
	} unset ($element);
	return $ret;
}

?>