[PHP] BB Code

This code will match the tags and format them.

Custom tags can be added to the array called $tags, in the format


tag name => style information

eg

'greentext' => 'color: green;'

using the new tag

[greentext]Some text[/greentext]



Heres the code.

PHP Code:

---

<?

function MATags2($string)
{
    $tags = array(
                    'b' => 'font-weight:bold;',
                    'u' => 'text-decoration: underline;',
                    'i' => 'font-style: italic;',
                    'small' => 'font-size:10px;',
                    'large' => 'font-size:16px;',
                    'hb' => 'font-weight:bold;font-size:16px;',
                    'hu' => 'text-decoration: underline;font-size:16px;',
                    'hbu' => 'font-weight:bold;text-decoration: underline;font-size:16px;',
                    'h' => 'font-size:16px;',
                    'c' => 'text-align:center;',
                    'l' => 'text-aligb:left;',
                    'r' => 'text-align:right;');
    
    
    foreach($tags as $tag =>$val)
    {
        $list .= $tag . "|";
    }
    $list = substr($list,0,strlen($list)-1);
    
    $pattern = '#\[('. $list .')\].*?\[\/('. $list .')\]#si'; 
    
    $match_count = preg_match_all($pattern,$string,$array);

    foreach($array[0] as $match)
    {
        $before_replace = $match;
        $after_replace = $match;
        $style = "";
        $inline = true;
        foreach($tags as $tag => $replace)
        {
            if(preg_match('#\['.$tag.'\]#',$before_replace))
            {
                $style .= $replace . ' ';
                $after_replace = str_replace("[" . $tag . "]","",$after_replace);
                $after_replace = str_replace("[/" . $tag . "]","",$after_replace);
                if($tag == 'c' || $tag == 'l' || $tag == 'r')
                {
                    $inline = false;
                }
            }
        }
        if($inline)
        {
            $after_replace = "<span style=\"$style\">$after_replace</span>";
        }
        else
        {
            $after_replace = "</p><div style=\"$style\">$after_replace</div><p>";
        }
        $string = str_replace($before_replace,$after_replace,$string);
        //clean up any tags no found
        
    }
    foreach($tags as $tag => $replace)
    {
        $string = str_replace("[" . $tag . "]","",$string);
        $string = str_replace("[/" . $tag . "]","",$string);
    }
    return $string;
}
function MAURL($text)
{
    $pattern = '#\[(small|large)\].*?\[\/(small|large)\]#si'; 
    
    if(preg_match_all($pattern,$text,$array))
    {
        foreach($array[0] as $match)
        {
            $before_replace = $match;
            $after_replace = $before_replace;
            
            $url_pattern = '#\[(email|url)(=.*?|)\](.*?)\[\/(email|url)\]#';
            $count = 0;
            if(preg_match_all($url_pattern,$after_replace,$url_array))
            {
                foreach($url_array[0] as $url_match)
                {
                    if(preg_match('/large/',$after_replace))
                    {
                        $style = "font-size:16px;";
                        
                    }
                    elseif(preg_match('/small/',$after_replace))
                    {
                        $style = "font-size:10px;";
                    }
                    if($url_array[1][$count] == "url")
                    {
                        $after_replace = preg_replace('/\[url\](.*?)\[\/url\]/sim','<a style="' . $style . '" href="\\1">\\1</a>',$after_replace);
                        $after_replace = preg_replace('/\[url=(.*?)\](.*?)\[\/url\]/sim','<a style="' . $style . '" href="\\1">\\2</a>',$after_replace);
                    }
                    elseif($url_array[1][$count] == "email")
                    {
                        $after_replace = preg_replace('/\[email\](.*?)\[\/email\]/sim','<a style="' . $style . '" href="mailto:\\1">\\1</a>',$after_replace);
                        $after_replace = preg_replace('/\[email=(.*?)\](.*?)\[\/email\]/sim','<a style="' . $style . '" href="mailto:\\1">\\2</a>',$after_replace);
                    }
                    $text = str_replace($before_replace,$after_replace,$text);
                    $before_replace = $after_replace;
                    $count++;
                }
            }
        }
    }
    
    return $text;
}
function Formatcode_List($text)
{
    $match_count = preg_match_all("#\[list\](.*?)\[/list]#si", $text, $matches);
    for ($i = 0; $i < $match_count; $i++){
        $before_replace = $matches[1][$i];
        $after_replace = $matches[1][$i];
        $temp = preg_split('/\[\*\]/',$before_replace);
        
        array_shift($temp);
        
        foreach($temp as $t)
        {    
            $t = trim($t);
            if($t != null)
            {
                $out .= "<li>". nl2br( $t ) . "</li>\n";
            }
        }
        $after_replace = $out;

        $str_to_match = "[list]" . $before_replace . "[/list]";

        $replacement = $code_start_html;
        $replacement .= $after_replace;
        $replacement .= $code_end_html;

        $text = str_replace($str_to_match,"<ul>" . $replacement . "</ul>", $text);
    }
    $text = str_replace("[list]", $code_start_html, $text);
    $text = str_replace("[/list]", $code_end_html, $text);
    return $text;
}

function MATags($text)
{
    $text = nl2br($text);
    
    $text = MAURL($text);
    $text = MATags2($text);

    $text = preg_replace('/\[img=(.*?)\]/sim','<img src="\\1" alt="Article Image"/>',$text);
    
    $text = preg_replace('/\[url\](.*?)\[\/url\]/sim','<a href="\\1">\\1</a>',$text);
    $text = preg_replace('/\[url=(.*?)\](.*?)\[\/url\]/sim','<a href="\\1">\\2</a>',$text);
    
    $text = preg_replace('/\[email\](.*?)\[\/email\]/sim','<a  href="mailto:\\1">\\1</a>',$text);
    $text = preg_replace('/\[email=(.*?)\](.*?)\[\/email\]/sim','<a href="mailto:\\1">\\2</a>',$text);

    $text = Formatcode_List($text);
    

    return $text;
}
?>

---

Here is an example of the code being used: test.php

Heres a list of the tags and what the output it like, without extra CSS being applied to them.

http://www.mindlessant.co.uk/articlecode.php

hi john,
I have not started to lern PHP yet and just wanted to see what its capible of, so i tryed to download "test.php" and my pc can not reconize the file type ".php" have you any idea how i can veiw the file?.

P.S And do you know any good PHP tutorails esspecialy on installing PHP?



thanks pip

Installing PHP, MySql and Apache on Windows written by VisualAd great tutorial to get you started using PHP and MySQL

You can use notepad, but I recommend this awesome HTML Editor:

Chami HTML-Kit

hi john,

Download the "test.php", thanks to a great, everything works, everything is good.