<?php/** * GForge Project Management Facility * * Copyright 2002 GForge, LLC * http://gforge.org/ * * This file is part of GForge. * * GForge 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. * * GForge 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 GForge; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  US *//*** This class is a simple utility to validate fields* * Sample usage:** $v = new Validator();* $v->check($summary, "summary");* $v->check($detail, "detail");* if (!$v->isClean()) {*  print $v->formErrorMsg("The following fields were null:");* }**/class Validator {	var $badfields;	/**	* Checks to see if a field is null; if so, the field name is added to an internal array	*	* @param field - a variable to check for null	* @param name - the variable name	*/	function check($field, $name) {		if (!$field) {			$this->badfields[] = $name;		}	}	/**	* Returns true if no null fields have been checked so far	*	* @return boolean - True if there are no null fields so far	*/	function isClean() {		return count($this->badfields) == 0;	}		/**	* Returns an error message which contains the null field names which have been checked	*	* @param preamble string - A string with which to start the error message	* @return string - A complete error message	*/	function formErrorMsg($preamble) {		foreach ($this->badfields as $field) {			$preamble = $preamble.$field.",";		}		return substr($preamble, 0, strlen($preamble)-1);	}}?>