Allow the standard WordPress text widget to execute PHP

functions.php

<?php
//* Add this to your functions.php file. Do NOT include the opening php tag

//* Allow Standard WordPress Text widget to execute PHP
function php_execute($html){
if(strpos($html,"<"."?php")!==false){ ob_start(); eval("?".">".$html);
$html=ob_get_contents();
ob_end_clean();
}
return $html;
}
add_filter('widget_text','php_execute',100);