[RESOLVED] Regex - urls and img tags

[Tdf]

Can anyone give me some templates and replaces please. My board has been equipped with a regex function and all i need to do is tell it the template (what to look for) and of course, what to replace it with. I am wanting to make sure that if anyone should post an a: img tag it will be displayed as an image (so im guessing it needs changing to <img src"imgwebaddress"></>

Also i need it to change webaddress into a hyperlink. At the moment i have tried to manually insert a hyperlink in the post textarea field and it doesnt even know what a hyperlink is.

I'm completely lost with this concept of find and replace and it doesnt make any sense to me when i have tried to do anything with it, except dimple word find and replace, like very hard - cats and dogs. :rolleyes: Thanks in advance.

PS, see this board knows what a url tag is 😃 so because it's changed it on me and you cant see what i wrote i need url tags turning into hyperlinks.

[leatherback]

look in the manual under user contributed examples. There is a bb search and replace example

[Tdf]

leatherback wrote:

look in the manual under user contributed examples. There is a bb search and replace example

I tried this before asking for help, i just didnt understand any of it. Sorry to be a pain like.

[leatherback]

Hm.. Then you have me confused. there is a function that will turn bb code into links and actual images. How did you try that didn't work? All I can do now is to copy and past from the manual...

[Tdf]

i tried that too, but could'nt for the life of me find the tags that i needed to alter and replace.

My board at the moment (it's part of a site i am trying to build and only on a localhost at the moment) doesnt understand these tags at all: url, img, not even a manually typed <ahref=

i have done some searches too on regex libary sites and tried some of the stuff on them and they didnt seem to do what i was wanting them to do, it just goes over my head this does, i dont get the gist of it full stop (which is annoying the hell out of me)

[leatherback]

if you have this in your posts:

and you would just copy the function posted by da_pimp2004_966 at hotmail dot com 21-Jun-2008 07:09 in the manual page and then run:

$var = preg_replace ($search, $replace, $var);

with $var being the posted message, you should have an HTML image tag in there.

[Tdf]

found it, but it doesnt help me as i have two fields to fill in, ones called template (what its looking for) and ones called replace (replacing with ) the behind the scenes functions are already done as far as i know, so the code that i have now to do the replacement of

[leatherback]

hm.. Not sure what it does in the background. That could just be a simple find-and-replace..

Did you try:
replace: ''/[img](.*?)[\/img]/is'
for: '<img src="$1" />'

[Tdf]

yep, i tried 3 in total, and it gave me errors galore. i removed them one at a time to find the cause, and the errors never went till all three had been removed. Since we are struggling with this, i went through my functions file and found the spot relating to the bbcode stuff and this is it:

function bbcode($data) {
  $sql = "SELECT * FROM forum_bbcode";
  $result = mysql_query($sql);
  if (mysql_num_rows($result) > 0) {
    while($row = mysql_fetch_array($result)) {
      $bbcode['tpl'][] =
        "/" . html_entity_decode($row['template'],ENT_QUOTES). "/i";
      $bbcode['rep'][] =
        html_entity_decode($row['replacement'],ENT_QUOTES);
    }
    $data1 = preg_replace($bbcode['tpl'],$bbcode['rep'],$data);
    $count = 1;
    while (($data1 != $data) and ($count < 4)) {
      $count++;
      $data = $data1;
      $data1 = preg_replace($bbcode['tpl'],$bbcode['rep'],$data);
    }
  }

  return $data;
}

Not much there that really helps me out as it's just getting the database entires to me, but it's obviousl not, must be doing something else.

[leatherback]

Hm..

maybe try inserting them without the quotes:
replace: /[img](.*?)[\/img]/is
for: <img src="$1" />

Otherwise.. You can always hack this pregreplace function:

function bbcode($data) {
  $sql = "SELECT * FROM forum_bbcode";
  $result = mysql_query($sql);
  if (mysql_num_rows($result) > 0) {
    while($row = mysql_fetch_array($result)) {
      $bbcode['tpl'][] =
        "/" . html_entity_decode($row['template'],ENT_QUOTES). "/i";
      $bbcode['rep'][] =
        html_entity_decode($row['replacement'],ENT_QUOTES);
    }



    $search = array(
            '/\[b\](.*?)\[\/b\]/is',
            '/\[i\](.*?)\[\/i\]/is',
            '/\[u\](.*?)\[\/u\]/is',
            '/\[img\](.*?)\[\/img\]/is',
            '/\[url\](.*?)\[\/url\]/is',
            '/\[url\=(.*?)\](.*?)\[\/url\]/is'
            );

    $replace = array(
            '<strong>$1</strong>',
            '<em>$1</em>',
            '<u>$1</u>',
            '<img src="$1" />',
            '<a href="$1">$1</a>',
            '<a href="$1">$2</a>'
            );

foreach($earch as $key => $pattern)
  {
  $bbcode['tpl'][] = $pattern;
  $bbcode['rep'][] $replace[$key];
  }

$data1 = preg_replace($bbcode['tpl'],$bbcode['rep'],$data);
$count = 1;
while (($data1 != $data) and ($count < 4)) {
  $count++;
  $data = $data1;
  $data1 = preg_replace($bbcode['tpl'],$bbcode['rep'],$data);
}
  }
  return $data;
}

[Tdf]

Bummer, i commented the code i had for the bb stuff, to save it fubar'in on me, and inserted the code sample you agve me, and got this instantly at tyring to preview my sites home page:

Fatal error: Cannot use [] for reading in C:\wamp\www\Includes\Functions.php on line 389

And in doing it making sure i dont use the quotes, i get this:

Warning: preg_replace() [function.preg-replace]: Unknown modifier '[' in C:\wamp\www\Includes\Functions.php on line 343

Warning: preg_replace() [function.preg-replace]: Unknown modifier '[' in C:\wamp\www\Includes\Functions.php on line 348

and that was with my original code and the sample you gave me commented out.

this whas what i tried to replace: /[img](.*?)[\/img]/
for: <img src="$1" />

[leatherback]

You did notice my typo in:
foreach($earch as $key => $pattern)

Which line is 389 on?

[Tdf]

Hehe, i didntt at the time, but in reading the email over and over i did in fact notice it and another typo as well and after trying it out tonight i have to say a big thank you bud, it's solved my issues now. Thanks again bud for your help.

this was the first line with a typo, the s was missing from search: foreach($search as $key => $pattern)

and the second line that had a typo in it was: $bbcode['rep'][] = $replace[$key];
the = was missing out.

anyway a day away from it and just chilling out and reading over and over again was a good cure in the end.