The simple XML syntax highlighting.
<?php
function xml_highlight($s)
{
$s = preg_replace("|<[^/?](.*)\s(.*)>|isU","[1]<[2]\\1[/2] [5]\\2[/5]>[/1]",$s);
$s = preg_replace("|</(.*)>|isU","[1]</[2]\\1[/2]>[/1]",$s);
$s = preg_replace("|<\?(.*)\?>|isU","[3]<?\\1?>[/3]",$s);
$s = preg_replace("|\=\"(.*)\"|isU","[6]=[/6][4]\"\\1\"[/4]",$s);
$s = htmlspecialchars($s);
$replace = array(1=>'0000FF', 2=>'808000', 3=>'800000', 4=>'FF00FF', 5=>'FF0000', 6=>'0000FF');
foreach($replace as $k=>$v)
{
$s = preg_replace("|\[".$k."\](.*)\[/".$k."\]|isU","<font color=\"".$v."\">\\1</font>",$s);
}
return nl2br($s);
}
?>
