Word Wrapping

james2010

Alright I'm building a word wrapping function that will ignore tags like this [tag][/tag], and I suppose it could be used for the same purpose with html tags. For some reason it's moving the tags one short after I get passed the 2 line, I've got no clue why this is happening but then again I'm completely brain dead right now. If anyone here has a bit of time and would like to take a look to see if I've messed up the logic somewhere I'd really really appreciate your help. Thanks in advance.



function wrapwords($string, $chars=75, $separator=" <br>")
{

  $tags = preg_replace("/(.*?)(\[.+?\])(.*?)/s", "$2,", $string);

  $string2 = preg_replace("/(\[.+?\])/s", "", $string);


  $string3 = wordwrap($string2, $chars, $separator, 1);

  $len1 = strlen($string2);
  $len2 = strlen($string3);

  $tags = substr($tags, 0, strrpos($tags, ","));
  $tags = explode(",", $tags);

  $tags = array_unique($tags);

  foreach($tags as $key => $value) {
    $offset = 0;
    $find = true;
    while($find !== false) {
      $find = strpos($string, $value, $offset);

  if($find !== false) {
    $replace[$find] = $value;
  }
  $offset = $find+1;
}
  }

  $lines = explode("<br>", $string3);  // compares length of line to place tags accordingly

  ksort($replace);
  $length = 0;  // length added by tags
  $inc = 0; // shift in position due to tags added
  $i = 1;  // increments for new line
  foreach($replace as $key => $value) {

$line = 0;
for($k=0;$k<$i;$k++) {
  $line = ($line+strlen($lines[$k]));
}

if(($key-$length)>=($line)) {
  $inc = ($inc + strlen($separator));
  $i++;
}

$string3 = substr_replace($string3, $value, ($key+$inc), 0);
$length += strlen($value);

  }

  return $string3;

}

~ I suspect the problem has something to do with wordwrap removing spaces

HalfaBee

What does wordwrap() do?

HalfaBee

laserlight

RTFM 😃

james2010

lol, :rolleyes: wordwrap() is a build in php function that wraps text. But it wraps everything including [tags] or <html tags>, so I built that function to do the process and ignore [tags]. But it's buggy 🙁

HalfaBee

Thats one I missed 🙁

Thanks LL I needed that 🙂

HalfaBee

James2010,

Can you explain what you are trying to acheive with this line.

$tags = preg_replace("/(.?)([.+?])(.?)/s", "$2,", $string);

HalfaBee

batman

Why don't you try setting all the tags you want cut out into an array, then just do an ereg_replace()??

//the box that get's the tags
$area = $_POST['area'];

//set your array
$array = array();

$new_area = ereg_replace('$array','',$area);

echo "$new_area";

Something like that might help??

james2010

humm I guess the backslashes were stripped.. that line is suppose to be:

(it works)

$tags = preg_replace("/(.*?)([.+?])(.+?)/s", "$2,", $string);

it pulls out all the tags into something like this [tag2],[/tag2],[tag1]...

I'm not an expert on regular expression though..

james2010

well I could have used ereg_replace() to strip the tags, but I hear PCRE are faster, and doing it that way saved me the effort of having to build the array.

Right now the problem is I feed a string through that function and after two breaks "<br>" from wordwrap() the [tags] are offset by one so I'll ended up formatting the wrong characters by one place ie ('this i[tag1]s a t[/tag1]est' instead of 'this [tag1]is a [/tag1]test'). Yet sometimes it works fine.