\n$message\n";
				print_r($var);
				if (DEBUG_DATATYPES)
				{
					foreach($var as $key => $value)
					{
						if (is_array($value))
						{
							$vartypes[$key] = print_debug_subarray($value);
						}
						else
						{
							$vartypes[$key] = gettype($value);
						}
					}
					echo "Data Types:\n";
					print_r($vartypes);
				}
				echo "\n
\n";
				if (floor(phpversion()) > 3 && !!(DEBUG_OUTPUT & 2))
				{
					$output .= ob_get_contents();
					ob_end_clean();
					/* Need to flesh this out still. I dont have a table to dump this in yet.*/
					/* So the SQL statement will go here*/
					if (!!(DEBUG_OUTPUT & 1))
					{
						echo "$output
\n";
					}
				}
			}
		}
	}
}

/**
  * Allows for array and direct function params as well as sanatization.
  *
  * @author seek3r
  * This function is used to validate param data as well as offer flexible function usage.
  *
	function somefunc()
	{
		$expected_args[0] = Array('name'=>'fname','default'=>'joe', 'type'=>'string');
		$expected_args[1] = Array('name'=>'mname','default'=>'hick', 'type'=>'string');
		$expected_args[2] = Array('name'=>'lname','default'=>'bob', 'type'=>'string');
		$recieved_args = func_get_args();
		$args = safe_args($expected_args, $recieved_args,__LINE__,__FILE__);
		echo 'Full name: '.$args['fname'].' '.$args['fname'].' '.$args['lname'].'
';
		//default result would be:
		// Full name: joe hick bob

	}

	Using this it is possible to use the function in any of the following ways
	somefunc('jack','city','brown');
	or
	somefunc(array('fname'=>'jack','mname'=>'city','lname'=>'brown'));
	or
	somefunc(array('lname'=>'brown','fname'=>'jack','mname'=>'city'));

	For the last one, when using named params in an array you dont have to follow any order
	All three would result in - Full name: jack city brown


	When you use this method of handling params you can secure your functions as well offer
	flexibility needed for both normal use and web services use.
	If you have params that are required just set the default as ##REQUIRED##
	Users of your functions can also use ##DEFAULT## to use your default value for a param
	when using the standard format like this:
	somefunc('jack','##DEFAULT##','brown');
	This would result in - Full name: jack hick brown

	Its using the default value for the second param.
	Of course if you have the second param as a required field it will fail to work.
 */
function safe_args($expected, $recieved, $line='??', $file='??')
{
	/* This array will contain all the required fields */
	$required = Array();

	/* This array will contain all types for sanatization checking */
	/* only used when an array is passed as the first arg          */
	$types = Array();

	/* start by looping thru the expected list and set params with */
	/* the default values                                          */
	$num = count($expected);
	for ($i = 0; $i < $num; $i++)
	{
		$args[$expected[$i]['name']] = $expected[$i]['default'];
		if ($expected[$i]['default'] === '##REQUIRED##')
		{
			$required[$expected[$i]['name']] = True;
		}
		$types[$expected[$i]['name']] = $expected[$i]['type'];
	}

	/* Make sure they passed at least one param */
	if(count($recieved) != 0)
	{
		/* if used as standard function we loop thru and set by position */
		if(!is_array($recieved[0]))
		{
		for ($i = 0; $i < $num; $i++)
			{
				if(isset($recieved[$i]) && $recieved[$i] !== '##DEFAULT##')
				{
					if(sanitize($recieved[$i],$expected[$i]['type']))
					{
						$args[$expected[$i]['name']] = $recieved[$i];
						unset($required[$expected[$i]['name']]);
					}
					else
					{
						echo 'Fatal Error: Invalid paramater type for '.$expected[$i]['name'].' on line '.$line.' of '.$file.'
';
						exit;
					}
				}
			}
		}
		/* if used as standard function we loop thru and set by position */
		else
		{
			for ($i = 0; $i < $num; $i++)
			{
				$types[$expected[$i]['name']] = $expected[$i]['type'];
			}
			while(list($key,$val) = each($recieved[0]))
			{
				if($val !== '##DEFAULT##')
				{
					if(sanitize($val,$types[$key]) == True)
					{
						$args[$key] = $val;
						unset($required[$key]);
					}
					else
					{
						echo 'Fatal Error: Invalid paramater type for '.$key.' on line '.$line.' of '.$file.'
';
						exit;
					}
				}
			}
		}
	}
	if(count($required) != 0)
	{
		while (list($key) = each($required))
		{
			echo 'Fatal Error: Missing required paramater '.$key.' on line '.$line.' of '.$file.'
';
		}
		exit;
	}
	return $args;
}

/**
 * Validate data.
 *
 * @author seek3r
 * This function is used to validate input data.
 * sanitize('number',$somestring);
 */
function sanitize($string,$type)
{
	switch ($type)
	{
		case 'bool':
			if ($string == 1 || $string == 0)
			{
				return True;
			}
			break;

		case 'isprint':
			$length = strlen($string);
			$position = 0;
			while ($length > $position)
			{
				$char = substr($string, $position, 1);
				if ($char < ' ' || $char > '~')
				{
					return False;
				}
				$position = $position + 1;
			}
			return True;

		case 'alpha':
			if (preg_match("/^[a-z]+$/i", $string))
			{
				return True;
			}
			break;

		case 'number':
			if (preg_match("/^[0-9]+$/i", $string))
			{
				return True;
			}
			break;

		case 'alphanumeric':
			if (preg_match("/^[a-z0-9 -._]+$/i", $string))
			{
				return True;
			}
			break;
		case 'string':
			if (preg_match("/^[a-z]+$/i", $string))
			{
				return True;
			}
			break;
		case 'ip':
			if (preg_match('/'."^[0-9]{1,3}(\.[0-9]{1,3}){3}$".'/i',$string))
			{
				$octets = preg_split('/\./',$string);
				for ($i=0; $i != count($octets); $i++)
				{
					if ($octets[$i] < 0 || $octets[$i] > 255)
					{
						return False;
					}
				}
				return True;
			}
			return False;

		case 'file':
			if (preg_match("/^[a-z0-9_]+\.+[a-z]+$/i", $string))
			{
				return True;
			}
			break;
		case 'email':
			if (preg_match('/'."^([[:alnum:]_%+=.-]+)@([[:alnum:]_.-]+)\.([a-z]{2,3}|[0-9]{1,3})$".'/i',$string))
			{
				return True;
			}
			break;
		case 'password':
			$password_length = strlen($string);
			$password_numbers = Array('0','1','2','3','4','5','6','7','8','9');
			$password_special_chars = Array(' ','~','`','!','@','#','$','%','^','&','*','(',')','_','+','-','=','{','}','|','[',']',"\\",':','"',';',"'",'<','>','?',',','.','/');

			if(@isset($GLOBALS['egw_info']['server']['pass_min_length']) && is_int($GLOBALS['egw_info']['server']['pass_min_length']) && $GLOBALS['egw_info']['server']['pass_min_length'] > 1)
			{
				$min_length = $GLOBALS['egw_info']['server']['pass_min_length'];
			}
			else
			{
				$min_length = 1;
			}

			if(@isset($GLOBALS['egw_info']['server']['pass_require_non_alpha']) && $GLOBALS['egw_info']['server']['pass_require_non_alpha'] == True)
			{
				$pass_verify_non_alpha = False;
			}
			else
			{
				$pass_verify_non_alpha = True;
			}

			if(@isset($GLOBALS['egw_info']['server']['pass_require_numbers']) && $GLOBALS['egw_info']['server']['pass_require_numbers'] == True)
			{
				$pass_verify_num = False;
			}
			else
			{
				$pass_verify_num = True;
			}

			if(@isset($GLOBALS['egw_info']['server']['pass_require_special_char']) && $GLOBALS['egw_info']['server']['pass_require_special_char'] == True)
			{
				$pass_verify_special_char = False;
			}
			else
			{
				$pass_verify_special_char = True;
			}

			if ($password_length >= $min_length)
			{
				for ($i=0; $i != $password_length; $i++)
				{
					$cur_test_string = substr($string, $i, 1);
					if (in_array($cur_test_string, $password_numbers) || in_array($cur_test_string, $password_special_chars))
					{
						$pass_verify_non_alpha = True;
						if (in_array($cur_test_string, $password_numbers))
						{
							$pass_verify_num = True;
						}
						elseif (in_array($cur_test_string, $password_special_chars))
						{
							$pass_verify_special_char = True;
						}
					}
				}

				if ($pass_verify_num == False)
				{
					$GLOBALS['egw_info']['flags']['msgbox_data']['Password requires at least one non-alpha character']=False;
				}

				if ($pass_verify_num == False)
				{
					$GLOBALS['egw_info']['flags']['msgbox_data']['Password requires at least one numeric character']=False;
				}

				if ($pass_verify_special_char == False)
				{
					$GLOBALS['egw_info']['flags']['msgbox_data']['Password requires at least one special character (non-letter and non-number)']=False;
				}

				if ($pass_verify_num == True && $pass_verify_special_char == True)
				{
					return True;
				}
				return False;
			}
			$GLOBALS['egw_info']['flags']['msgbox_data']['Password must be at least '.$min_length.' characters']=False;
			return False;

		case 'any':
			return True;

		default :
			if (isset($GLOBALS['egw_info']['server']['sanitize_types'][$type]['type']))
			{
				if ($GLOBALS['egw_info']['server']['sanitize_types'][$type]['type']($GLOBALS['egw_info']['server']['sanitize_types'][$type]['string'], $string))
				{
					return True;
				}
			}
			return False;
	}
}

function reg_var($varname, $method='any', $valuetype='alphanumeric',$default_value='',$register=True)
{
	if($method == 'any' || $method == array('any'))
	{
		$method = Array('POST','GET','COOKIE','SERVER','FILES','GLOBAL','DEFAULT');
	}
	elseif(!is_array($method))
	{
		$method = Array($method);
	}
	$cnt = count($method);
	for($i=0;$i<$cnt;$i++)
	{
		switch(strtoupper($method[$i]))
		{
			case 'DEFAULT':
				if($default_value)
				{
					$value = $default_value;
					$i = $cnt+1; /* Found what we were looking for, now we end the loop */
				}
				break;
			case 'GLOBAL':
				if(@isset($GLOBALS[$varname]))
				{
					$value = $GLOBALS[$varname];
					$i = $cnt+1;
				}
				break;
			case 'POST':
			case 'GET':
			case 'COOKIE':
			case 'SERVER':
				if(phpversion() >= '4.1.0')
				{
					$meth = '_'.strtoupper($method[$i]);
				}
				else
				{
					$meth = 'HTTP_'.strtoupper($method[$i]).'_VARS';
				}
				if(@isset($GLOBALS[$meth][$varname]))
				{
					$value = $GLOBALS[$meth][$varname];
					$i = $cnt+1;
				}
				if(get_magic_quotes_gpc() && isset($value))
				{
					// we need to stripslash 3 levels of arrays
					// because of the password function in preferences
					// it's named ['user']['variablename']['pw']
					// or something like this in projects
					// $values['budgetBegin']['1']['year']
					if(@is_array($value))
					{
						/* stripslashes on the first level of array values */
						foreach($value as $name => $val)
						{
							if(@is_array($val))
							{
								foreach($val as $name2 => $val2)
								{
									if(@is_array($val2))
									{
										foreach($val2 as $name3 => $val3)
										{
											$value[$name][$name2][$name3] = stripslashes($val3);
										}
									}
									else
									{
										$value[$name][$name2] = stripslashes($val2);
									}
								}
							}
							else
							{
								$value[$name] = stripslashes($val);
							}
						}
					}
					else
					{
						/* stripslashes on this (string) */
						$value = stripslashes($value);
					}
				}
				break;
			case 'FILES':
				if(phpversion() >= '4.1.0')
				{
					$meth = '_FILES';
				}
				else
				{
					$meth = 'HTTP_POST_FILES';
				}
				if(@isset($GLOBALS[$meth][$varname]))
				{
					$value = $GLOBALS[$meth][$varname];
					$i = $cnt+1;
				}
				break;
			default:
				if(@isset($GLOBALS[strtoupper($method[$i])][$varname]))
				{
					$value = $GLOBALS[strtoupper($method[$i])][$varname];
					$i = $cnt+1;
				}
				break;
		}
	}

	if (@!isset($value))
	{
		$value = $default_value;
	}

	if (@!is_array($value))
	{
		if ($value == '')
		{
			$result = $value;
		}
		else
		{
			if (sanitize($value,$valuetype) == 1)
			{
				$result = $value;
			}
			else
			{
				$result = $default_value;
			}
		}
	}
	else
	{
		reset($value);
		while(list($k, $v) = each($value))
		{
			if ($v == '')
			{
				$result[$k] = $v;
			}
			else
			{
				if (is_array($valuetype))
				{
					$vt = $valuetype[$k];
				}
				else
				{
					$vt = $valuetype;
				}

				if (sanitize($v,$vt) == 1)
				{
					$result[$k] = $v;
				}
				else
				{
					if (is_array($default_value))
					{
						$result[$k] = $default_value[$k];
					}
					else
					{
						$result[$k] = $default_value;
					}
				}
			}
		}
	}
	if($register)
	{
		$GLOBALS['egw_info'][$GLOBALS['egw_info']['flags']['currentapp']][$varname] = $result;
	}
	return $result;
}

/**
 * retrieve a value from either a POST, GET, COOKIE, SERVER or from a class variable.
 *
 * @author skeeter
 * This function is used to retrieve a value from a user defined order of methods.
 * $this->id = get_var('id',array('HTTP_POST_VARS'||'POST','HTTP_GET_VARS'||'GET','HTTP_COOKIE_VARS'||'COOKIE','GLOBAL','DEFAULT'));
 * @param $variable name
 * @param $method ordered array of methods to search for supplied variable
 * @param $default_value (optional)
 */
function get_var($variable,$method='any',$default_value='')
{
	if(!@is_array($method))
	{
		$method = array($method);
	}
	return reg_var($variable,$method,'any',$default_value,False);
}

/**
 * Load a class and include the class file if not done so already.
 *
 * This function is used to create an instance of a class, and if the class file has not been included it will do so.
 * $GLOBALS['egw']->acl =& CreateObject('phpgwapi.acl');
 *
 * @author RalfBecker@outdoor-training.de
 * @param $classname name of class
 * @param $p1,$p2,... class parameters (all optional)
 * @return object reference to an object
 */
function CreateObject($class)
{
	list($appname,$classname) = explode('.',$class);

	if (!class_exists($classname))
	{
		static $replace = array(
			'datetime'    => 'egw_datetime',
			'uitimesheet' => 'timesheet_ui',
			'uiinfolog'   => 'infolog_ui',
			'uiprojectmanager'  => 'projectmanager_ui',
			'uiprojectelements' => 'projectmanager_elements_ui',
			'uiroles'           => 'projectmanager_roles_ui',
			'uimilestones'      => 'projectmanager_milestones_ui',
			'uipricelist'       => 'projectmanager_pricelist_ui',
			'bowiki'            => 'wiki_bo',
			'uicategories'      => 'admin_categories',
			'defaultimap'		=> 'emailadmin_oldimap',
		);
		if (!file_exists(EGW_INCLUDE_ROOT.'/'.$appname.'/inc/class.'.$classname.'.inc.php') || isset($replace[$classname]))
		{
			if (isset($replace[$classname]))
			{
				//throw new Exception(__METHOD__."('$class') old classname '$classname' used in menuaction=$_GET[menuaction]!");
				error_log(__METHOD__."('$class') old classname '$classname' used in menuaction=$_GET[menuaction]!");
				$classname = $replace[$classname];
			}
		}
		if (!file_exists($f=EGW_INCLUDE_ROOT.'/'.$appname.'/inc/class.'.$classname.'.inc.php'))
		{
			throw new Api\Exception\AssertionFailed(__FUNCTION__."($classname) file $f not found!");
		}
		// this will stop php with a 500, if the class does not exist or there are errors in it (syntax error go into the error_log)
		require_once(EGW_INCLUDE_ROOT.'/'.$appname.'/inc/class.'.$classname.'.inc.php');
	}
	$args = func_get_args();
	switch(count($args))
	{
		case 1:
			$obj = new $classname;
			break;
		case 2:
			$obj = new $classname($args[1]);
			break;
		case 3:
			$obj = new $classname($args[1],$args[2]);
			break;
		case 4:
			$obj = new $classname($args[1],$args[2],$args[3]);
			break;
		default:
			$code = '$obj = new ' . $classname . '(';
			foreach(array_keys($args) as $n)
			{
				if ($n)
				{
					$code .= ($n > 1 ? ',' : '') . '$args[' . $n . ']';
				}
			}
			$code .= ');';
			eval($code);
			break;
	}
	if (!is_object($obj))
	{
		echo "
CreateObject('$class'): Cant instanciate class!!!
\n".function_backtrace(1)."
\n";
	}
	return $obj;
}

/**
 * Execute a function with multiple arguments
 * We take object $GLOBALS[classname] from class if exists
 *
 * @param string app.class.method method to execute
 * @example ExecObject('etemplates.so_sql.search',$criteria,$key_only,...);
 * @return mixed reference to returnvalue of the method
 */
function &ExecMethod2($acm)
{
	// class::method is php5.2.3+
	if (strpos($acm,'::') !== false && version_compare(PHP_VERSION,'5.2.3','<'))
	{
		list($class,$method) = explode('::',$acm);
		$acm = array($class,$method);
	}
	if (!is_callable($acm))
	{
		list(,$class,$method) = explode('.',$acm);
		if (!is_object($obj =& $GLOBALS[$class]))
		{
			if (class_exists($class))
			{
				$obj = new $class;
			}
			else
			{
				$obj = CreateObject($acm);
			}
		}

		if (!method_exists($obj,$method))
		{
			echo "
".function_backtrace().": no methode '$method' in class '$class'
\n";
			return False;
		}
		$acm = array($obj,$method);
	}
	$args = func_get_args();
	unset($args[0]);

	return call_user_func_array($acm,$args);
}

/**
 * Execute a function, and load a class and include the class file if not done so already.
 *
 * This function is used to create an instance of a class, and if the class file has not been included it will do so.
 *
 * @author seek3r
 * @param $method to execute
 * @param $functionparam function param should be an array
 * @param $loglevel developers choice of logging level
 * @param $classparams params to be sent to the contructor
 * @return mixed returnvalue of method
 */
function ExecMethod($method, $functionparam = '_UNDEF_', $loglevel = 3, $classparams = '_UNDEF_')
{
	unset($loglevel);	// not used
	/* Need to make sure this is working against a single dimensional object */
	$partscount = count(explode('.',$method)) - 1;

	if (!is_callable($method) && $partscount == 2)
	{
		list($appname,$classname,$functionname) = explode(".", $method);
		if (!is_object($GLOBALS[$classname]))
		{
			// please note: no reference assignment (=&) here, as $GLOBALS is a reference itself!!!
			if ($classparams != '_UNDEF_' && ($classparams || $classparams != 'True'))
			{
				$GLOBALS[$classname] = CreateObject($appname.'.'.$classname, $classparams);
			}
			elseif (class_exists($classname))
			{
				$GLOBALS[$classname] = new $classname;
			}
			else
			{
				$GLOBALS[$classname] = CreateObject($appname.'.'.$classname);
			}
		}

		if (!method_exists($GLOBALS[$classname],$functionname))
		{
			error_log("ExecMethod('$method', ...) No methode '$functionname' in class '$classname'! ".function_backtrace());
			return false;
		}
		$method = array($GLOBALS[$classname],$functionname);
	}
	if (is_callable($method))
	{
		return $functionparam != '_UNDEF_' ? call_user_func($method,$functionparam) : call_user_func($method);
	}
	error_log("ExecMethod('$method', ...) Error in parts! ".function_backtrace());
	return false;
}

/**
 * Return a properly formatted account_id.
 *
 * @author skeeter
 * This function will return a properly formatted account_id. This can take either a name or an account_id as paramters. If a name is provided it will return the associated id.
 * $account_id = get_account_id($accountid);
 * @param int/string $account_id either a name or an id
 * @param int/string $default_id either a name or an id
 * @return int account_id
 */
function get_account_id($account_id = '',$default_id = '')
{
	if (gettype($account_id) == 'integer')
	{
		return $account_id;
	}
	elseif ($account_id == '')
	{
		if ($default_id == '')
		{
			return (isset($GLOBALS['egw_info']['user']['account_id'])?$GLOBALS['egw_info']['user']['account_id']:0);
		}
		elseif (is_string($default_id))
		{
			return $GLOBALS['egw']->accounts->name2id($default_id);
		}
		return (int)$default_id;
	}
	elseif (is_string($account_id))
	{
		if($GLOBALS['egw']->accounts->exists((int)$account_id) == True)
		{
			return (int)$account_id;
		}
		else
		{
			return $GLOBALS['egw']->accounts->name2id($account_id);
		}
	}
}

/**
 * sets the file system seperator depending on OS
 *
 * This is completely unnecessary, as you can use forward slashes in php under every OS -- RalfBecker 2005/11/09
 *
 * @deprecated just use forward slashes supported by PHP on all OS
 * @return file system separator
 */
function filesystem_separator()
{
	if(PHP_OS == 'Windows' || PHP_OS == 'OS/2' || PHP_OS == 'WINNT')
	{
		return '\\';
	}
	else
	{
		return '/';
	}
}

/**
 * @deprecated just use forward slashes supported by PHP on all OS
 */
define('SEP', filesystem_separator());

/**
 * print an array or object as pre-formatted html
 *
 * @param mixed $array
 * @param boolean $print =true print or return the content
 * @return string if !$print
 */
function _debug_array($array,$print=True)
{
	$output = '
'.print_r($array,true)."
\n";

	if ($print)
	{
		echo $output;
	}
	else
	{
		return $output;
	}
}

/**
 * eGW version checking, is eGW version in $a < $b
 *
 * @param string $a	egw version number to check if less than $b
 * @param string $b egw version number to check $a against
 * @return boolean True if $a < $b
 */
function alessthanb($a,$b,$DEBUG=False)
{
	$num = array('1st','2nd','3rd','4th');

	if ($DEBUG)
	{
		echo'
Input values: ' . 'A="'.$a.'", B="'.$b.'"';
	}
	$newa = str_replace('pre','.',$a);
	$newb = str_replace('pre','.',$b);
	$testa = explode('.',$newa);
	if(@$testa[1] == '')
	{
		$testa[1] = 0;
	}
	if(@$testa[3] == '')
	{
		$testa[3] = 0;
	}
	$testb = explode('.',$newb);
	if(@$testb[1] == '')
	{
		$testb[1] = 0;
	}
	if(@$testb[3] == '')
	{
		$testb[3] = 0;
	}
	$less = 0;

	for ($i=0;$iChecking if '. (int)$testa[$i] . ' is less than ' . (int)$testb[$i] . ' ...'; }
		if ((int)$testa[$i] < (int)$testb[$i])
		{
			if ($DEBUG) { echo ' yes.'; }
			$less++;
			if ($i<3)
			{
				/* Ensure that this is definitely smaller */
				if ($DEBUG) { echo"  This is the $num[$i] octet, so A is definitely less than B."; }
				$less = 5;
				break;
			}
		}
		elseif((int)$testa[$i] > (int)$testb[$i])
		{
			if ($DEBUG) { echo ' no.'; }
			$less--;
			if ($i<2)
			{
				/* Ensure that this is definitely greater */
				if ($DEBUG) { echo"  This is the $num[$i] octet, so A is definitely greater than B."; }
				$less = -5;
				break;
			}
		}
		else
		{
			if ($DEBUG) { echo ' no, they are equal.'; }
			$less = 0;
		}
	}
	if ($DEBUG) { echo '
Check value is: "'.$less.'"'; }
	if ($less>0)
	{
		if ($DEBUG) { echo '
A is less than B'; }
		return True;
	}
	elseif($less<0)
	{
		if ($DEBUG) { echo '
A is greater than B'; }
		return False;
	}
	else
	{
		if ($DEBUG) { echo '
A is equal to B'; }
		return False;
	}
}

/**
 * eGW version checking, is eGW version in $a > $b
 *
 * @param string $a eGW version number to check if more than $b
 * @param string $b eGW version number to check check $a against
 * @return boolean True if $a > $b
 */
function amorethanb($a,$b,$DEBUG=False)
{
	$num = array('1st','2nd','3rd','4th');

	if ($DEBUG)
	{
		echo'
Input values: ' . 'A="'.$a.'", B="'.$b.'"';
	}
	$newa = str_replace('pre','.',$a);
	$newb = str_replace('pre','.',$b);
	$testa = explode('.',$newa);
	if($testa[3] == '')
	{
		$testa[3] = 0;
	}
	$testb = explode('.',$newb);
	if($testb[3] == '')
	{
		$testb[3] = 0;
	}
	$less = 0;

	for ($i=0;$iChecking if '. (int)$testa[$i] . ' is more than ' . (int)$testb[$i] . ' ...'; }
		if ((int)$testa[$i] > (int)$testb[$i])
		{
			if ($DEBUG) { echo ' yes.'; }
			$less++;
			if ($i<3)
			{
				/* Ensure that this is definitely greater */
				if ($DEBUG) { echo"  This is the $num[$i] octet, so A is definitely greater than B."; }
				$less = 5;
				break;
			}
		}
		elseif((int)$testa[$i] < (int)$testb[$i])
		{
			if ($DEBUG) { echo ' no.'; }
			$less--;
			if ($i<2)
			{
				/* Ensure that this is definitely smaller */
				if ($DEBUG) { echo"  This is the $num[$i] octet, so A is definitely less than B."; }
				$less = -5;
				break;
			}
		}
		else
		{
			if ($DEBUG) { echo ' no, they are equal.'; }
			$less = 0;
		}
	}
	if ($DEBUG) { echo '
Check value is: "'.$less.'"'; }
	if ($less>0)
	{
		if ($DEBUG) { echo '
A is greater than B'; }
		return True;
	}
	elseif($less<0)
	{
		if ($DEBUG) { echo '
A is less than B'; }
		return False;
	}
	else
	{
		if ($DEBUG) { echo '
A is equal to B'; }
		return False;
	}
}

/**
 * prepend a prefix to an array of table names
 *
 * @author Adam Hull (aka fixe) - No copyright claim
 * @param	$prefix	the string to be prepended
 * @param	$tables	and array of tables to have the prefix prepended to
 * @return array of table names with the prefix prepended
 */
function prepend_tables_prefix($prefix,$tables)
{
	foreach($tables as $key => $value)
	{
		$tables[$key] = $prefix.$value;
	}
	return $tables;
}

/**
 * backtrace of the calling functions for php4.3+ else menuaction/scriptname
 *
 * @author RalfBecker-AT-outdoor-training.de
 * @param int $remove =0 number of levels to remove
 * @return string function-names separated by slashes (beginning with the calling function not this one)
 */
function function_backtrace($remove=0)
{
	if (function_exists('debug_backtrace'))
	{
		$backtrace = debug_backtrace();
		//echo "function_backtrace($remove)
".print_r($backtrace,True)."
\n";
		foreach($backtrace as $n => $level)
		{
			if ($remove-- < 0)
			{
				$ret[] = (isset($level['class'])?$level['class'].$level['type']:'').$level['function'].
					($n > 0 && isset($backtrace[$n-1]['line']) ? ':'.$backtrace[$n-1]['line'] : '').	// add line number of call
					(!$level['class'] && !is_object($level['args'][0]) && $level['function'] != 'unserialize' ?
					'('.substr(str_replace(EGW_SERVER_ROOT,'',(string)$level['args'][0]),0,64).')' : '');
			}
		}
		if (is_array($ret))
		{
			return implode(' / ',$ret);
		}
	}
	return $_GET['menuaction'] ? $_GET['menuaction'] : str_replace(EGW_SERVER_ROOT,'',$_SERVER['SCRIPT_FILENAME']);
}

/**
 * check $_REQUEST data for XSS, vars containing script tags are moved to $GLOBALS['egw_unset_vars']
 *
 * @internal
 * @param array &$var reference of array to check
 * @param string $name ='' name of the array
 */
function _check_script_tag(&$var,$name='')
{
	static $preg=null;
	//old: '/<\/?[^>]*\b(iframe|script|javascript|on(before)?(abort|blur|change|click|dblclick|error|focus|keydown|keypress|keyup|load|mousedown|mousemove|mouseout|mouseover|mouseup|reset|select|submit|unload))\b[^>]*>/i';
	if (!isset($preg)) $preg =
		// forbidden tags like iframe or script
		'/(<(\s*\/)?\s*(iframe|script|object|embed|math|meta)[^a-z0-9]|'.
		// on* attributes
		'<[^>]*on(before)?(abort|blur|change|click|dblclick|error|focus|keydown|keypress|keyup|load|mouse[^=]+|reset|select|submit|unload|resize|propertychange|page[^=]*|scroll|readystatechange|start|popstate|form[^=]+|input)\s*=|'.
		// ="javascript:*" diverse javascript attribute value
		'<[^>]+(href|src|dynsrc|lowsrc|background|style|poster|action)\s*=\s*("|\')?[^"\']*javascript|'.
		// benavior:url and expression in style attribute
		'<[^>]+style\s*=\s*("|\')[^>]*(behavior\s*:\s*url|expression)\s*\()/i';
	if (is_array($var))
	{
		foreach($var as $key => $val)
		{
			if (is_array($val))
			{
				_check_script_tag($var[$key],$name.'['.$key.']');
			}
			elseif(strpos($val, '<') !== false)	// speedup: ignore everything without <
			{
				if (preg_match($preg,$val))
				{
					// special handling for $_POST[json_data], to decend into it's decoded content, fixing json direct might break json syntax
					if ($name == '_POST' && $key == 'json_data' && ($json_data = json_decode($val, true)))
					{
						_check_script_tag($json_data, $name.'[json_data]');
						$_REQUEST[$key] = $var[$key] = json_encode($json_data);
						continue;
					}
					error_log(__FUNCTION__."(,$name) ${name}[$key] = ".$var[$key]);
					$GLOBALS['egw_unset_vars'][$name.'['.$key.']'] = $var[$key];
					// attempt to clean the thing
					$var[$key] = $val = html::purify($val);
					// check if we succeeded, if not drop the var anyway, keep the egw_unset_var in any case
					if (preg_match($preg,$val))
					{
						error_log("*** _check_script_tag($name): unset(${name}[$key]) with value $val***");
						unset($var[$key]);
					}
				}
			}
		}
		// in case some stupid old code expects the array-pointer to be at the start of the array
		reset($var);
	}
}

/* some _check_script_tag tests, should be commented out by default
if (isset($_SERVER['SCRIPT_FILENAME']) && $_SERVER['SCRIPT_FILENAME'] == __FILE__)	// some tests
{
	if (!defined('EGW_INCLUDE_ROOT'))
	{
		define(EGW_INCLUDE_ROOT, realpath(dirname(__FILE__).'/../..'));
		define(EGW_API_INC, realpath(dirname(__FILE__)));
	}

	$total = $num_failed = 0;
	$patterns = array(
		// pattern => true: should fail, false: should not fail
		'< script >alert(1)< / script >' => true,
		'blah' => true,
		'Click Me' => true,
		// from https://www.acunetix.com/websitesecurity/cross-site-scripting/
		'' => true,
		'' => true,
		'