[PHP] Bulletin Board Code (BBC)

<?php 
function text2bbc($text){ 
    $find = array( 
        '~\[b\](.*?)\[/b\]~s', 
        '~\[i\](.*?)\[/i\]~s', 
        '~\[u\](.*?)\[/u\]~s', 
        '~\[size=(.*?)\](.*?)\[/size\]~s', 
        '~\[color=(.*?)\](.*?)\[/color\]~s' 
    ); 
    $replace = array( 
        '<b>$1</b>', 
        '<i>$1</i>', 
        '<span style="text-decoration:underline;">$1</span>', 
        '<span style="font-size:$1px;">$2</span>', 
        '<span style="color:$1;">$2</span>' 
    ); 
    return preg_replace($find,$replace,$text); 
} 

echo text2bbc('this is some [b]bold text[/b] and this is [color=#FF0000]Red textThis will convert Bulletin Board Code into readable HTML, good for comments, forums, etc.
');
echo'<br>'; 
echo text2bbc('this text is [i]italic[/i] and this is not'); 
echo'<br>'; 
echo text2bbc('here we have [u]underlined[/u] text'); 
echo'<br>'; 
echo text2bbc('this is [size=24]24px[/size] font'); 
?>

PHP:

 

Also named UBB

But why not add more common used tags? if you want to share hulpfull snippets!