<?php
/* string functions
 *
 * Copyright (C) 2007 Robert Bienert
 * <http://freihoch2.nerdbox.de/opensource/QuizSession/>
 *
 * This library 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 2
 * of the License, or (at your option) any later version.
 * 
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 */

/* applies an array to a string
 *
 * subj: string	a string with insertion marks
 * var: string	insertion mark prefix
 * replace: array	array with replacements
 *
 * returns the string with all "applys"
 *
 * This functions applies the array replace to the string subj using
 * certain insertion marks. These marks use var as prefix, followed by
 * a sequential number. So, let's see the following example:
 *
 *	echo prepareString('Hello $1, what\'s $2?', '$',
 *		array('you', 'cool'));
 *
 * This echoes "Hello you, what's cool?".
 */
function prepareString($subj, $var, $replace) {
	$i = 0;

	foreach ($replace as $r) {
		++$i;

		$subj = str_replace($var.$i, $r, $subj);
	}

	return $subj;
}

function ip2int($addr) {
	$bytes = explode('.', $addr);

	return pack('C*', $bytes[0], $bytes[1], $bytes[2], $bytes[3]);
}
?>