Автоматическая подсветка PHP кода в тексте.

                        
 <?php



$text = htmlspecialchars('[code]



echo\' ky\';[/code]', ENT_QUOTES, 'UTF-8');



function highlight_code1($code)



{



$code = trim($code[1]);



if(!preg_match('#^&lt;\?(.+?)\?&gt;$#', $code))



$code='&lt;?php



'.$code.'



?&gt;';







return $code;



}



function highlight_code2($code)



{



return str_replace('&nbsp;', ' ', highlight_string(html_entity_decode($code[0], ENT_QUOTES, 'UTF-8'),1));



}







$text = preg_replace_callback('#\[code\](.+?)\[/code\]#sui' , 'highlight_code1', $text);



$text = preg_replace_callback('#&lt;\?(.+?)\?&gt;#sui', 'highlight_code2', $text);



echo $text;



?>