functions.php

<?php
function fw_strip_slashes($str)
{
        if (get_magic_quotes_gpc()){return stripslashes($str);}
        return $str;
}
function fw_format_text($text,$autolink)
{
        $text=htmlspecialchars($text,ENT_NOQUOTES);
        $text=str_replace("\r","",$text);
        $text=str_replace("\n[code]","[code]",str_replace("[/code]\n","[/code]",$text));
        $text=str_replace("\n[quote]","[quote]",str_replace("[/quote]\n","[/quote]",$text));
        $text=str_replace("\n[ul]","[ul]",str_replace("[/ul]\n","[/ul]",$text));
        $text=str_replace("\n[ol]","[ol]",str_replace("[/ol]\n","[/ol]",$text));
        $text=str_replace("\n[li]","[li]",str_replace("[/li]\n","[/li]",$text));
        while(strpos($text,"[noparse][url]\n")!==false){$text=str_replace("[url]\n","\n[url]",$text);}
        while(strpos($text,"\n[/url][/noparse]")!==false){$text=str_replace("\n[/url]","[/url]\n",$text);}
        while(strpos($text,"[img]\n")!==false){$text=str_replace("[img]\n","\n[img]",$text);}
        while(strpos($text,"\n[/img]")!==false){$text=str_replace("\n[/img]","[/img]\n",$text);}
        fw_escape_code($text,$autolink);
        return $text;
}
function fw_escape_code(&$content,$autolink)
{
        if(empty($content)){return;}
        $start=strpos($content,'[code]');
        $end=strpos($content,'[/code]');
        if(($start===false)||($end===false)||($start > $end)){
            fw_url($content,$autolink);
            return;}
        $firstpart=substr($content,0,$start);
        fw_url($firstpart,$autolink);
        $code=substr($content,$start+6,($end-$start-6));
        $code=fw_formatcode($code);
        $lastpart=substr($content,$end +7);
        fw_escape_code($lastpart);
        $content=$firstpart.$code.$lastpart;
}
function fw_formatcode($code)
{
        if(empty($code)){return;}
        static $n=0;
        $n=$n+1;
        $line_count=substr_count($code,"\n");
        $height=20+($line_count-1)*14;
        if($height<40){$height=40;}
        if($height>300){$height=300;}
        $code='<div class="fw_code_heading">Code'.$n.':</div><pre class="fw_code" style="padding:5px; overflow:auto; height:'.$height.'px;">'.$code.'</pre>';
        return $code;
}

function fw_url(&$content,$autolink)
{
        if($autolink){$content=fw_convert2_link($content);}
        $content=preg_replace("/\[noparse][url\](.+)\[\/url\]/eiUs", "fw_geturl('\\1')", $content);
        $content=preg_replace('/\[url\=(.+)\](.+)\[\/url\]/eiUs', "fw_imglink('\\2','\\1')", $content);
        $content=preg_replace('/\[color\=(.+)\](.+)\[\/color\]/iUs', '<span style="color:$1">$2</span>', $content);
        $content=preg_replace("/\[img\](.+)\[\/img\]/eiUs", "fw_imglink('\\1');", $content);
        $content=nl2br($content);
        $content=fw_convert2_html($content);
}
function fw_geturl($link)
{
        if(strpos($link,']')!==false){
            $x=str_replace('[','<',str_replace(']','>',$link));
            $x=strip_tags($x);
            return '<a target="_blank" href="'.$x.'">'.$link.'</a>';
        }
        else{return '<a target="_blank" href="'.$link.'">'.$link.'</a>';}
}
function fw_imglink($img,$url='')
{
        if(!empty($url)){
            if(strpos($img,'[img]')===false){return '<a target="_blank" href="'.$url.'">'.$img.'</a>';}
            $img=substr($img,5,-6);}
        if(!(@getimagesize($img))){return;}
        if(empty($url)){return '<div class="fw_image"><img src="'.$img.'" /></div>';}
        else{return '<div class="fw_image"><a target="_blank" href="'.$url.'"><img src="'.$img.'" /></a></div>';}
}
function fw_convert2_link($x)
{
        $x=str_replace('[url]http','[url]xttp',str_replace('[url=http','[url=xttp',$x));
        $exp='/(http|https)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,4}+([^\[\ \n\r\t]*)/i';
        $x=preg_replace($exp, ' [url]${0}[/url][/noparse]', $x);
        $x=str_replace('[url]xttp','[url]http',str_replace('[url=xttp','[url=http',$x));
        return $x;
}

function fw_convert2_html($text)
{
        $search=array('[b]','[/b]','[u]','[/u]','[i]','[/i]','[s]','[/s]','[sup]','[/sup]','[sub]','[/sub]','[quote]','[/quote]','[ul]','[/ul]','[ol]','[/ol]','[li]','[/li]');
        $replace=array('<b>','</b>','<u>','</u>','<i>','</i>','<s>','</s>','<sup>','</sup>','<sub>','</sub>','<blockquote><p>','</p></blockquote>','<ul>','</ul>','<ol>','</ol>','<li>','</li>');
        return str_replace($search,$replace,$text);
        return $text;
}
?>