Problema Regex

[zacca94]

ma sarebbe più semplice ripulire la stringa dei tag list e [*] sostituendoli con "" e poi usare explode ?

no impossibile, poi come farei in caso di <list> annidate, tag [*] sparsi in giro per il codice o bbcode mal inserito?

comunque ho risolto in questo modo, posto il codice nel caso fosse d'aiuto a qualcuno:

<?php

    function parseCode2($text) {
        
        // regexp
        $regexp =     "/"                                                                                .
                    "(\
[list\])"                                                                    .
                    "|"                                                                                .
                    "(\[\*\].*?\[\/\*\])"                                                            .
                    "|"                                                                                .
                    "(\[\/list\])"                                                                    .
                    "|"                                                                                .
                    "(\[code\])"                                                                    .
                    "|"                                                                                .
                    "(\[\/code\])"                                                                    .
                    "|"                                                                                .
                    "(\[quote(\s*=\s*(.*?){1}){0,1}\s*\])"                                            .
                    "|"                                                                                .
                    "(\[\/quote\])"                                                                    .
                    "/";
                    
        $code = preg_split ( $regexp, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );
        
        //
        $text = "";
        $open_list = $closed_list = $item_list = $open_code = $closed_code = $open_quote = $closed_quote = 0;
        
        //
        while ($html = array_shift( $code )) {
            // <ul> tag
            if (preg_match("/\
[list\]/", $html)) {
                $open_list++;
                $text .= "<ul>";
            }
            
            // <li> tag
            elseif (preg_match("/\[\*\](.*?)\[\/\*\]/", $html, $return)) {
                if ($open_list) {
                    $text .= "<li>{$return[1]}</li>";
                }
            }
            
            // </ul> tag
            elseif (preg_match("/\[\/list\]/", $html)) {
                $open_list--;
                $text .= "</ul>";
            }
            
            // all
            else {
                $text .= $html;
            }
        }
        
        // <b> tag
        $text = preg_replace("/\[b\](.*?)\[\/b\]/", "<b>\\1</b>", $text);
        
        // <u> tag
        $text = preg_replace("/\[u\](.*?)\[\/u\]/", "<u>\\1</u>", $text);
        
        // <i> tag
        $text = preg_replace("/\[i\](.*?)\[\/i\]/", "<i>\\1</i>", $text);
        
        // <img src=http://example.jpg> tag
        $text = preg_replace("/\[img\](http|https|ftp){1}(:\/\/){1}(.*?)\[\/img\]/", "<img src=\"\\1\\2\\3\" />", $text);
        
        // <span style='font-size:[value]pt;line-height:100%'>text</span> tag
        $text = preg_replace("#\[size=([1-7]+)\](.+?)\[/size\]#is", "<span style='font-size:\\1pt;line-height:100%'>\\2</span>", $text);

        // <span style='color:color;line-height:100%'>text</span> tag
        $text = preg_replace("#\[color=(red|blue|purple|orange|yellow|gray|green)\](.+?)\[/color\]#is", "<span style='color:\\1;line-height:100%'>\\2</span>", $text);

        // <span style='font-family:font>text</span> tag
        $text = preg_replace("#\[font=(arial|times|courier|impact|geneva|optima)\](.*?)\[/font\]#is", "<span style='font-family:\\1'>\\2</span>", $text);
        
        // <a href=mailto:example@domain.dot>click here</a> tag
        $text = preg_replace( "/\[email\](.*?)\[\/email\]/i", "<a href='mailto:\\1'>\\1</a>", $text);
        $text = preg_replace( "#\[email\s*=\s*([\.\w\-]+\@[\.\w\-]+\.[\w\-]+)\s*\](.*?)\[\/email\]#is", "<a href='mailto:\\1'>\\2</a>", $text);

        // <a href=http://www.google.it>click here</a> tag
        $text = preg_replace("/\[url\](http|https|ftp){1}(:\/\/){1}(.*?)\[\/url\]/is", "<a href=\"\\1\\2\\3\">\\1\\2\\3</a>", $text);
        $text = preg_replace( "#\[url\s*=\s*(http|https|ftp){1}(:\/\/){1}(.*?)\s*\](.*?)\[\/url\]#is", "<a href=\"\\1\\2\\3\">\\4</a>", $text);
        
        // <a href=http://www.google.it>click here</a> tag
        
        echo $text;
    }
    
    $text = "
    [b]b[/b]
    [i]i[/i]
    [u]u[/u]
    [size=7]dfsdfsfds[/size]
    [url=http://google.it]http://javascript:alert(document.cookie)[/url]
    [url]httdp://google.it[/url]
    [img]http://google.it/image.gif[/img]
    [email]admin@admin.it[/email]
    [size=7][color=red]LAL[/color][/size]
    [color=red]LAL[/color]
    [font=impact]asd[/font]
    
[list]
        [*]asd[/*]
        [*]lol[/*]
    [/list]

            ";
    echo parseCode2($text);
?>