function DetermineVersion()
{
//comes back with a version numbers for admin scripts based on mod dates
//the base version is set as the first items in $versionconfig, corresponding 
//to the timestamp of the mod date, the second items
//this base is added to the results of some wacky math designed to keep 
//the calculated version after that base timestamp low.
//the result versions (to be added to the base) tend to be smaller than "0.001" 
//unless the file is very much beyond the base timestamp for that version.
//this system will automatically scan through the list 
//of files given in the ddl called $strConfig, 
//labeling them with the second fields in that ddl.
	$strClassFirst="bgclassfirst";
	$strClassSecond="bgclasssecond";
	$strConfig="tableform.php|Tableform-admin_functions.php|
		Core function library-tableform_js.js|
		Core javascript  library-tablemaker.php|
		Tablemaker-tablemaker_js.js|Tablemaker javascript-saveform.php|
		Tableform saver library-dbtools.php|
		Database tools-dump.php|CSV tools-backup_functions.php|
		Backup functions-frontenddbfunctions.php|
		Frontend db functions-genericuserfunctions.php|
		Generic user functions";
	$versionconfig="0.5|1182650153-1|1191945058";
	$date=filemtime("admin_functions.php");
	$datearray=getdate($date);
	$thisyear=$datearray["year"];
	$previousversion="0.5";
	$arrVersions=explode("-", $versionconfig);
	$thismonth=str_pad($datearray["month"], 2, "0", STR_PAD_LEFT);
	$thisday=str_pad($datearray["mday"], 2, "0", STR_PAD_LEFT);
	$out="";
	$out.="<table cellpadding=\"0\" cellspacing=\"1\" ";
	$out.="border=\"0\" width=\"450\" class=\"bgclassline\">\n";
	$out.="<tr><td class=\"heading\" colspan=\"2\">";
	$out.="Tableform Database Tool</td></tr>\n";
	$arrConfig=explode("-", $strConfig);
	foreach($arrConfig as $thisConfig)
	{
		$arrData=explode("|", $thisConfig);
		$strFile=$arrData[0];
		$strThisBgClass=Alternate($strClassFirst, 
			$strClassSecond, $strThisBgClass);
		$out.="<tr class=\"" . $strThisBgClass . "\"><td>";
		if (file_exists($strFile))
		{
			$moddate=filemtime($strFile);
			for($i=0; $i<count($arrVersions); $i++)  
			{
				$thisversion=$arrVersions[$i];
	 
				$bwlWeHaveAnother=false;
				if($i<count($arrVersions)-1)
				{
					$arrnextVersionData=
						explode("|", $arrVersions[$i+1]);
					$bwlWeHaveAnother=true;
				}
				//echo $thisversion . "--<br>";
				$arrVersionData=explode("|", $thisversion);
				if($bwlWeHaveAnother)
				{
					//echo "*<br>";
					if (intval($arrVersionData[1])<intval($moddate)  
						&& 
						intval($arrnextVersionData[1])>
						intval($moddate))
					{
						$baseversion=$arrVersionData[0];
						$basemoddate=$arrVersionData[1];
						//echo $basemoddate . "++<br>";
						break;
					}
				}
				else
				{
					if (intval($arrVersionData[1])<
						;intval($moddate))
					{
						$baseversion=$arrVersionData[0];
						$basemoddate=$arrVersionData[1];
						break;
						//echo $basemoddate . "&&<br>";
					}
					else
					{
						$baseversion=0;
						$basemoddate=1000650153;
						break;
					}
				
				}
			}
			$version= $baseversion + 
				pow(($moddate - $basemoddate)/100000000000,.5);
			$out.= $arrData[1] . "</td><td> version: " 
				. NanHandler(substr($version, 0, 8)
				, $previousversion);// . " " 
				. $moddate;
		}
		else
		{
			$out.= $arrData[1] . "</td><td>not present" ;
		
		}
		$out.="</td></tr>\n";
 	}
	$out.="</table>\n<p/><br>";
	return $out;
}

For linking purposes this article's URL is:
http://asecular.com/blog.php?071011