code your own bb codes

[gordsmash]

hello,

 

i have searched this for a while with no results. But is there a way to program your own bb codes with php or is this a dumb question. Any answers are greatly appreciated.

[trq]

Yes there is.

[gordsmash]

Are there any example codes that you have?

[trq]

I myself don't have any examples but I'm sure Googling 'php bbcode' would get you some results.

 

Never seen the point in bbcode myself.

[gordsmash]

Is it possible to use the str_replace function to code them that way? Or is the PEAR way the only way.

[Alex]

Sure, you can use str_replace, or even better would be preg_replace()

[Evilace]

try these, i made one from this google phpbb or http://www.phpbb.com/

[cags]

Why would preg_replace be better? If gordsmash just wishes to substitute one string for the other surely str_replace would be better.

[Alex]

Why would preg_replace be better? If gordsmash just wishes to substitute one string for the other surely str_replace would be better.

If you were doing str_replace you'd do something like this:

 

$text = str_replace(Array('[b]', '[/b]'), Array('<b>', '</b>'), $text);

 

Now say if someone entered this text:

 

[b]Hello world

 

There would be no closing </b> tag, which can cause problems (be it display problems or validation issues).

[Psycho]

Here is some sample code I have laying around. You can add your own options by modifying $patters and $replacements accordingly

 

<?php

//bbcode

$patterns = array(

  //BB Code
  "/\[[b]\](.*?)\[\/b\]/is",
  "/\[[i]\](.*?)\[\/i\]/is",
  "/\[[u]\](.*?)\[\/u\]/is",
  "/\[[s]\](.*?)\[\/s\]/is",
  "/\[marquee\](.*?)\[\/marquee\]/is",
  "/\[url\](.*?)\[\/url\]/is",
  "/\[url=(.*?)\](.*?)\[\/url\]/is",
  "/\[img\](.*?)\[\/img\]/is",
  "/\[quote\](.*?)\[\/quote\]/is",
  "/\[(size|color)=(.*?)\](.*?)\[\/\\1\]/is",
  "/\[br\]/i",

  //Emoticons
  "/ \:\) /",
  "/ \:\( /",
  "/ \ /",
  "/ \ /",
  "/ \:\| /",
  "/ \ /",
  "/ \:\? /",
  "/ \;\) /");

$replacements = array(

  //BB Code
  "<b>\\1</b>",
  "<i>\\1</i>",
  "<u>\\1</u>",
  "<s>\\1</s>",
  "<marquee>\\1</marquee>",
  "<a href=\"\\1\">\\1</a>",
  "<a href=\"\\1\" target=\"_blank\">\\2</a>",
  "<img border=\"0\" src=\"\\1\">",
  "<div><b>Quote:</b> <i>\\1</i></div>",
  "<font \\1=\"\\2\">\\3</font>",
  "<br />",

  //Emoticons
  " <img src=\"smilies/happy.gif\" border=\"0\"> ",
  " <img src=\"smilies/angry.gif\" border=\"0\"> ",
  " <img src=\"smilies/omg.gif\" border=\"0\"> ",
  " <img src=\"smilies/tounge.gif\" border=\"0\"> ",
  " <img src=\"smilies/dry.gif\" border=\"0\"> ",
  " <img src=\"smilies/biggrin.gif\" border=\"0\"> ",
  " <img src=\"smilies/confused.gif\" border=\"0\"> ",
  " <img src=\"smilies/wink.gif\" border=\"0\"> "
);

$string = "[b]This is bold text[/b] [i]this is italic text[/i] [b][i]This is bold, italic text[/b][/i]";

$result = preg_replace($patterns,$replacements,$string);

echo $result;

?>

 

EDIT: had to remove the BBCode optins for [ code ] as it was screwing up my post.

[cags]

Ahh yes, point taken.

[gordsmash]

sweet! thanks everyone for helping me out. You guys are awesome!!!

[Psycho]

Why would preg_replace be better? If gordsmash just wishes to substitute one string for the other surely str_replace would be better.

If you were doing str_replace you'd do something like this:

 

$text = str_replace(Array('[b]', '[/b]'), Array('<b>', '</b>'), $text);

 

Now say if someone entered this text:

 

[b]Hello world

 

There would be no closing </b> tag, which can cause problems (be it display problems or validation issues).

 

Not only that, there is no way you could use str_replace() to parse something like "Go here" into a valid link without regular expressions. Well, I suppose you could do it with a lot of various scripts to process the text multiple times, but it would be pointless since you can do it very easily with regular expressions.