Text parsing

[blodan]

So, you want some BBcode and so on to your comments/forum or whatever? This is definitely the right thread for that!

BBcode

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1. function bbcode($text) {
2.     $text = preg_replace("!\\[url=(.*?)\\](.*?)\\[/url\\]!i", "<a href=\"\\1\" target=\"_blank\">\\2</a>", $text);
3.     $text = preg_replace("!\\[link=(.*?)\\](.*?)\\[/link\\]!i", "<a href=\"\\1\" target=\"_blank\">\\2</a>", $text);
4.     $text = preg_replace("!\\[b\\](.*?)\\[/b\\]!i", "<strong>\\1</strong>", $text);
5.     $text = preg_replace("!\\[u\\](.*?)\\[/u\\]!i", "<u>\\1</u>", $text);
6.     $text = preg_replace("!\\[i\\](.*?)\\[/i\\]!i", "<i>\\1</i>", $text);
7.     preg_match_all("!\\[img\\](.*?)\\[/img\\]!i", $text, $out, PREG_SET_ORDER);
8.     foreach($out as $fixthis) {
9.         $string = $fixthis[1];
10.         $sizen = getimagesize($string);
11.         if($sizen[0] > 300) { $width = 300; }else{ $width = $sizen[0]; } //if you want the maxwidth to be something else then 300px, just change the value
12.         $text = str_replace("[img]".$string."[/img]", "<img src=\"".$string."\" style=\"width: ".$width."px;\" alt=\"\" />", $text);
13.     }
14.     $text = quotes($text);
15.     return $text;
16. }
17. function quotes($input)
18. {
19.     $regex = '#\[quote=([^]]+)]((?:[^[]|\[(?!/?quote[^]]*])|(?R))+)\[/quote]#';
20.     if (is_array($input)) {
21.         $input = "\r\n<table cellpadding=\"0\" cellspacing=\"0\"style=\"width: 100%;\"><tr><td style=\"width: 30px;\">&nbsp;</td><td><strong>".$input[1]."</strong> said:</td></tr><tr><td style=\"width: 30px;\">&nbsp;</td><td style=\"border: 1px #000000 dotted; background-color: #ecebe7; padding: 5px 5px 5px 5px;\">".$input[2]."</td></tr></table>";
22.        
23.     }
24.  
25.     return preg_replace_callback($regex, 'quotes', $input);
26. }

Make links imbedded in text

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1. function makelinks($text) {
2.     $text = preg_replace("/(?<=^|\s)(www\.([-a-zA-Z0-9_]+\.)*[-a-zA-Z0-9_]+\.[-a-zA-Z0-9_]{2,6}(\/[^\s]*)*)(?=\s|$)/", "http://$1", $text);
3.     $search = "/(?<=^|\s)(http:\/\/|https:\/\/|ftp:\/\/)(([-a-zA-Z0-9_]+\.)*[-a-zA-Z0-9_]+\.[-a-zA-Z0-9_]{2,6}(\/[^\s]*)*)(?=\s|$|\.\s|\.$|,\s|,$|\!\s|\!$)/U";
4.     $replace = "<a href=\"$1$2\" target=\"_blank\">$2</a>";
5.     $text = preg_replace($search, $replace, $text);
6.     return $text;
7. }

Break long words

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1. function breakLongWords($str, $maxLength, $char){
2.     $wordEndChars = array(" ", "\n", "\r", "\f", "\v", "\0");
3.     $count = 0;
4.     $newStr = "";
5.     $openTag = false;
6.     for($i=0; $i<strlen($str); $i++){
7.         $newStr .= $str{$i};    
8.        
9.         if($str{$i} == "<"){
10.             $openTag = true;
11.             continue;
12.         }
13.         if(($openTag) && ($str{$i} == ">")){
14.             $openTag = false;
15.             continue;
16.         }
17.        
18.         if(!$openTag){
19.             if(!in_array($str{$i}, $wordEndChars)){//If not word ending char
20.                 $count++;
21.                 if($count==$maxLength){//if current word max length is reached
22.                     $newStr .= $char;//insert word break char
23.                     $count = 0;
24.                 }
25.             }else{//Else char is word ending, reset word char count
26.                     $count = 0;
27.             }
28.         }
29.        
30.     }//End for    
31.     return $newStr;
32. }

I recommend using them in this order though:

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1. echo breakLongWords(bbcode(nl2br(makelinks(htmlentities($text)))),65,"<br />");