function bbcode($string){

	$string = nl2br(htmlspecialchars($string));

	$patterns = array(

                                    '`\[b\](.+?)\[/b\]`is',
                                    '`\[i\](.+?)\[/i\]`is',
                                    '`\[u\](.+?)\[/u\]`is',
                                    '`\[strike\](.+?)\[/strike\]`is',
                                    '`\[color=#([0-9]{6})\](.+?)\[/color\]`is',
                                    '`\[email\](.+?)\[/email\]`is',
                                    '`\[img\](.+?)\[/img\]`is',
                                    '`\[url=([a-z0-9]+://)([\w\-]+\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*?)?)\](.*?)\[/url\]`si',
                                    '`\[url\]([a-z0-9]+?://){1}([\w\-]+\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*)?)\[/url\]`si',
                                    '`\[url\]((www|ftp)\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*?)?)\[/url\]`si',
                                    '`\[quote\](.+?)\[/quote\]`is',
                                    '`\[indent](.+?)\[/indent\]`is',
                                    '`\[size=([1-6]+)\](.+?)\[/size\]`is'
                                

                                );

	$replaces =  array(

                                    '<strong>\\1</strong>',
                                    '<em>\\1</em>',
                                    '<span style="border-bottom: 1px dotted">\\1</span>',
                                    '<del>\\1</del>',
                                    '<span style="color:#\1;">\2</span>',
                                    '<a href="mailto:\1">\1</a>',
                                    '<img src="\1" alt="" style="border:0px;" />',
                                    '<a href="\1\2">\6</a>',
                                    '<a href="\1\2">\1\2</a>',
                                    '<a href="http://\1">\1</a>',
                                    '<strong>Quote:</strong></p><div class="quote"><em>\1</em></div><p>',
                                    '<pre>\\1</pre>',
                                    '</p><h\1>\2</h\1><p>'
                                    
                                    

                                    );


$string = preg_replace($patterns, $replaces , $string);

return $string;
}