高亮度显示ｐｈｐ源代码

高亮度显示ｐｈｐ源代码
function Heighcode($Heightstring){
do{
   $z=0;
   if(preg_match('/(.*?)/s',$Heightstring,$reg)) {
     $z=1;
     $code=';
     ob_start();
     highlight_string($reg[1]);
     $code = ob_get_contents();
     ob_end_clean();
     $reg[1] = addslashes($reg[1]);
     $Heightstring=preg_replace("/(.*?)/s","$code",$Heightstring,1);
    }
}while($z);
return $Heightstring;
}
##########################################################################################
#$PHPcode就是要被加亮的代码
$PHPcode= <<
function HeighPHPcode($Heightstring){
do{
   $z=0;
   if(preg_match('/(.*?)/s',$Heightstring,$reg)) {
     $z=1;
     $code=';
     ob_start();
     highlight_string($reg[1]);
     $code = ob_get_contents();
     ob_end_clean();
     $reg[1] = addslashes($reg[1]);
     $Heightstring=preg_replace("/(.*?)/s","$code",$Heightstring,1);
    }
}while($z);
return $Heightstring;
}

END;
##########################################################################################
echo   HeighPHPcode("$PHPcode");
?>