With this method you can have a simple way to include your own little php script (if you need it only on one page use the pagephpcontent extension).

Put following typoscript into your template setup.

includeLibs.testMd5 = fileadmin/testMd5.php
temp.info = USER
temp.info {
  userFunc =user_testMd5->main
  value=atest
  color=#11FAAA
}

page.XX<temp.info

Save following PHP Script in fileadmin/testMd5.php

<?

class user_testMd5 {

var $cObj;// The backReference to the mother cObj object set at call time

/**

* Call it from a USER cObject with 'userFunc = user_randomImage->main_randomImage'

*/

function main($content,$conf){

$content.='<span style="color:'.$conf["color"].'">'.$conf["value"].' as md5 '.md5($conf["value"]).'</span>';

return $content;

}

}

?>