Подсветка синтаксиса

include('./include/common.php');

include_once ("geshi.php");

$string = preg_replace_callback("#\[code\](.+?)\[/code\]#is",
create_function(
'$matches',
'global $array,$num;
$key = "%__".$num."__%";
$num++;
$array[$key] = "<div class=\"block\"><b>CODE:</b><div class=\"htmlcode\">".$matches[1]."</div></div>";
return $key;'
),$string);

$string = preg_replace_callback("#\[code=([^\]]*)\](.+?)\[/code\]#is",
create_function(
'$matches',
'global $array,$num;
$key = "%__".$num."__%";
$num++;
$geshi = new GeSHi(html_entity_decode($matches[2],ENT_QUOTES),$matches[1]);
$array[$key] = "<div class=\"block\"><b>".$matches[1].":</b><div class=\"htmlcode\">".$geshi->parse_code()."</div></div>";
return $key;'
),$string);

\[code=([^\]]*)\](.+?)\[/code\]

\[code=(php|html|css|javascript|cpp|python)\](.+?)\[/code\]