My own BB code gone wrong.

AbydosGater · May 16, 2007

Hey guys, Im working on a bbCode script that uses the same tags to open and close. IE: ++Bold Test++ The first ++ would be replaced with <b> and the second with </b>. I came up with the following code.

<?php
function BBcode($tag, $identifier, $string){
$open = '<' . $tag . '>';
$close = '<' . $tag . '/>';
$current = $open;
$i = 0;
$totalTagsSplit = split($identifier, $string);
$totalTags = count($totalTagsSplit);
if ($totalTags >= 1){

for ($i = 0; $i <= $totalTags; $i++){
	$string = str_replace($identifier, $current, $string);
	if ($current == $open){
	$current = $close;
	echo "opening";
	} elseif ($current == $close){
	$current = $open;
	echo "closing";
	}
	$i++;
	}
return $string;
}

}
////
//$tag being the HTML tag you want to use.
//$identifier being the string used to open and close the tag.
//$string being the actual string you want to manipulate.
////
?>

But its replacing everything with the same opening tag and never closes it. can anyone see what i did wrong?

Andy

AbydosGater · May 17, 2007

Hmm anyone any idea? Its doing my head in. I cant see anything wrong with the code so it has to be something i dont know. Can anyone spot it?

Andy

Lumio · May 17, 2007

That's not BB, but ok.

I made the following script for an intern communication-area (where only admins are):

<?php
class SIMPLE_CODE {
	function simplecode($s) {
		$s = nl2br(htmlspecialchars($s));
		$ns = '';

		//underlined
		$pos = -1;
		while(($pos = strpos($s, '__')) !== false) {
			$b=false;
			$bs=0;
			$i=-1;
			$last=-1;
			while (($back = strpos($s, '\\', $i+1)) !== false) {
				if ($back < $pos) {
					if ($b === false) $b = true;
					else $b = false;
					$bs++;
					$last=$back;
					$i = $back;
				}else {
					$back = $last;
					break;
				}
			}

			if ($b===true) $bs--;
			$bs = $bs/2;

			if ($b===true) {
				$ns .= substr($s, 0, $pos-1-$bs).'__';
				//echo $ns.'<br /><br /><br />';
				$s = substr($s, $pos+2);
				continue;
			}else {
				$end_pos = strpos($s, '__', $pos+1);
				if ($end_pos !== false) {
					$ns .= substr($s, 0, $pos);
					$ns .= '<you>'.substr($s, $pos+2, ($end_pos-$pos-2)).'</you>';
					$s = substr($s, $end_pos+2);
				}else
					break;
			}
		}
		$ns .= $s;
		$s = $ns;
		$ns = '';
		//italic
		$pos = -1;
		while(($pos = strpos($s, '//')) !== false) {
			$b=false;
			$bs=0;
			$i=-1;
			$last=-1;
			while (($back = strpos($s, '\\', $i+1)) !== false) {
				if ($back < $pos) {
					if ($b === false) $b = true;
					else $b = false;
					$bs++;
					$last=$back;
					$i = $back;
				}else {
					$back = $last;
					break;
				}
			}

			if ($b===true) $bs--;
			$bs = $bs/2;

			if ($b===true) {
				$ns .= substr($s, 0, $pos-1-$bs).'//';
				//echo $ns.'<br /><br /><br />';
				$s = substr($s, $pos+2);
				continue;
			}else {
				$end_pos = strpos($s, '//', $pos+1);
				if ($end_pos !== false) {
					$ns .= substr($s, 0, $pos);
					$ns .= '<i>'.substr($s, $pos+2, ($end_pos-$pos-2)).'</i>';
					$s = substr($s, $end_pos+2);
				}else
					break;
			}
		}
		$ns .= $s;
		$s = $ns;
		$ns = '';
		//bold
		$pos = -1;
		while(($pos = strpos($s, '**')) !== false) {
			$b=false;
			$bs=0;
			$i=-1;
			$last=-1;
			while (($back = strpos($s, '\\', $i+1)) !== false) {
				if ($back < $pos) {
					if ($b === false) $b = true;
					else $b = false;
					$bs++;
					$last=$back;
					$i = $back;
				}else {
					$back = $last;
					break;
				}
			}

			if ($b===true) $bs--;
			$bs = $bs/2;

			if ($b===true) {
				$ns .= substr($s, 0, $pos-1-$bs).'**';
				//echo $ns.'<br /><br /><br />';
				$s = substr($s, $pos+2);
				continue;
			}else {
				$end_pos = strpos($s, '**', $pos+1);
				if ($end_pos !== false) {
					$ns .= substr($s, 0, $pos);
					$ns .= '<b>'.substr($s, $pos+2, ($end_pos-$pos-2)).'</b>';
					$s = substr($s, $end_pos+2);
				}else
					break;
			}
		}
		$ns .= $s;

		return $ns;
	}


	function format($txt) {
		$ns = '';
		$pos= -1;
		while (($pos = strpos($txt, '<?')) !== false) {
			$end_pos = strpos($txt, '?>', $pos+1);

			if ($end_pos !== false) {
				$next_pos = strpos($txt, '<?', $end_pos);
				if ($next_pos === false) $next_pos = strlen($txt);

				/* next_pos erneuern */
				//Suche nach '
				$qo = false;
				$q =-1;
				while (($q = strpos($txt, "'", $q+1)) !== false) {
					if ($qo === false) $qo = true;
					else $qo = false;

					if ($qo === false && $next_pos < $q && $ql < $next_pos) {
						$next_pos = strpos($txt, '?>', $q+1);
					}

					if ($qo === false) $ql = $q;
					else $ql = strlen($txt);
				}

				/* end_pos erneuern */
				//Suche nach '
				$qo = false;
				$q =-1;

				while (($q = strpos($txt, "'", $q+1)) !== false) {
					if ($q >= $next_pos) break;

					if ($qo === false) $qo = true;
					else $qo = false;

					if ($qo === false && $end_pos < $q && $q < $next_pos) {
						$end_pos = strpos($txt, '?>', $q+1);
					}
				}
				//Suche nach "
				$qo = false;
				$q =-1;

				while (($q = strpos($txt, "'", $q+1)) !== false) {
					if ($q >= $next_pos) break;

					if ($qo === false) $qo = true;
					else $qo = false;

					if ($qo === false && $end_pos < $q && $q < $next_pos) {
						$end_pos = strpos($txt, '?>', $q+1);
					}
				}


				$ns.= $this->simplecode(substr($txt, 0, $pos));

				$code = substr($txt, $pos, ($end_pos-$pos+2));
				$output_result = '';
				ob_start();
				highlight_string($code);
				$output_result = ob_get_contents();
				ob_end_clean();
				$ns .= $output_result;

				$e = false;
				if (substr($code, 0, 5) == '<?php') $code = substr($code, 5);
				elseif (substr($code, 0, 3) == '<?=') { $code = 'echo '.substr($code, 3); $e = true; }
				elseif (substr($code, 0, 2) == '<?') $code = substr($code, 2);

				$code = substr($code, 0, -2);
				if ($e === true) $code .= ';';

				$output_result = $code_result = '';
				ob_start();
				$code_result = @eval($code);
				$output_result = ob_get_contents();
				ob_end_clean();

				if ($code_result === false)
					$ns .= '<span class="error"><br />-Code contains errors</span>';
				else {
					$ns .= '<span class="info"><br />-Code contains no errors</span>';
					if (strlen($code_result) > 0) {
						(strlen($code_result) > 32) && $code_result = substr($code_result, 0, 32).'...';
						$ns .= '<span class="grey1"><br /><span class="bi">-Result:</span> '.htmlspecialchars($code_result).'</span>';
					}
				}
				if ($output_result !== false && strlen($output_result) > 0) {
					$ns .= '<span class="grey2"><br /><span class="bi">-Output:</span> ';
					if (strlen($output_result) > 32) $output_result = substr($output_result, 0, 32).'...';
					$ns .= htmlspecialchars($output_result);
					$ns .= '</span>';
				}	

				$txt = substr($txt, $end_pos+2);

			}else
				break;
		}
		$ns .= $this->simplecode($txt);

		return $ns;
	}
}
?>

Use it like this:

<?php
   $c = new SIMPLE_CODE;
   echo $c->format('**bold** //italic// __underlined__');
?>

//edit: If you want to use it for open posting, please remove the eval()-command

taith · May 17, 2007

personally i made this :-) translates `b into <b>/</b>

<?php
function filter_colourize($string){
while(($pos=strpos($string,"`")) !== false){
  $tag=substr($string,$pos+1,1);
  $pre=substr($string,0,$pos);
  $post=substr($string,$pos+2);
  switch($tag){
   case "0":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:white;">';
   break;
   case "1":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:olive;">';
   break;
   case "2":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:orange;">';
   break;
   case "3":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:plum;">';
   break;
   case "4":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:pink;">';
   break;
   case "5":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:purple;">';
   break;
   case "6":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:red;">';
   break;
   case "7":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:gray;">';
   break;
   case "8":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:green;">';
   break;
   case "9":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:hotpink;">';
   break;
   case "!":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:silver;">';
   break;
   case "@":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:gold;">';
   break;
   case "#":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:lightslategray;">';
   break;
   case "$":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:steelblue;">';
   break;
   case "%":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:ivory;">';
   break;
   case "^":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:tan;">';
   break;
   case "&":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:teal;">';
   break;
   case "a":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:yellow;">';
   break;
   case "b":
    if(!$nestedtags[bold]){
     $nestedtags[bold]=true;
     $colour.='<b>';
    }else{
     $nestedtags[bold]=false;
     $colour.='</b>';
    }
   break;
   case "c":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:cornsilk;">';
   break;
   case "d":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:navy;">';
   break;
   case "e":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:aqua;">';
   break;
   case "f":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:cyan;">';
   break;
   case "g":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:beige;">';
   break;
   case "h":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:lime;">';
   break;
   case "i":
    if(!$nestedtags[italics]){
     $nestedtags[italics]=true;
     $colour.='<i>';
    }else{
     $nestedtags[italics]=false;
     $colour.='</i>';
    }
   break;
   case "j":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:blue;">';
   break;
   case "k":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:linen;">';
   break;
   case "l":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:azure;">';
   break;
   case "m":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:black;">';
   break;
   case "n":
    $colour.='<br>';
   break;
   case "o":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:magenta;">';
   break;
   case "p":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:brown;">';
   break;
   case "q":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:cadetblue;">';
   break;
   case "r":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:maroon;">';
   break;
   case "s":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:coral;">';
   break;
   case "t":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:darkseagreen;">';
   break;
   case "u":
    if(!$nestedtags[underline]){
     $nestedtags[underline]=true;
     $colour.='<u>';
    }else{
     $nestedtags[underline]=false;
     $colour.='</u>';
    }
   break;
   case "v":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:chocolate;">';
   break;
   case "w":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:crimson;">';
   break;
   case "x":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:bisque;">';
   break;
   case "y":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:orchid;">';
   break;
   case "z":
    if(!$nestedtags[colour]) $nestedtags[colour]=true;
    else $colour.='</span>';
    $colour.='<span style="color:peru;">';
   break;
  }
  $string=$pre.$colour.$post;
  unset($colour);
  $i=$pos+1;
}
if($nestedtags[italics]) $string .= '</i>';
if($nestedtags[underline]) $string .= '</u>';
if($nestedtags[bold]) $string .= '</b>';
if($nestedtags[colour]) $string .= '</span>';
return $string;
}
?>

obsidian · May 17, 2007

You don't have a closing tag declared:

<?php
// Try changing this:
$close = '<' . $tag . '/>';

// To this:
$close = '</' . $tag . '>';
?>

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My own BB code gone wrong.

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