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Concatenated URL's - RegEx


$search = array('#\[url]([a-z0-9]+?://){1}([\w\-]+\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*)?)\[/url\]#', '#\[url]((www|ftp)\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*?)?)\[/url\]#');
$replace = array('<a href="\1\2" target="_blank" title="\1\2">link</a>', '<a href="http://\1" target="_blank" title="\1">link</a>' );
$str = preg_replace($search, $replace, $str);

here's the current bbcode script for replacing [url]http://url_here[/url] with link

i wanna change it so it's it shows the link but if its past 'X' amount of characters it cuts out the middle of the link and replaces it with '...'

i.e.
ORIGINAL: http://www.experts-exchange.com/Web/Web_Languages/PHP/askQuestion.jsp
UPDATED: http://www.experts-exch...HP/askQuestion.jsp
0
chrisnetonline
Asked:
chrisnetonline
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1 Solution
 
ZylochCommented:
Hi

Can't tell, but you can try this: (probably not most effective though)

if ($l=strlen($1.$2)>30) {
   $checkEnd=explode("/",$1.$2);
   $f_len=strlen($checkEnd(count($checkEnd)-1))+3;
   $f_len=gmp_neg($f_len);
   $cut_link=substr($1.$2,0,23)."...".substr($1.$2,$f_len,($h-$f_len));
} else {
   $cut_link=$1.$2;
}
$replace = array('<a href="\1\2" target="_blank" title="\1\2">$cut_link</a>', '<a href="http://\1" target="_blank" title="\1">$cut_link</a>' );

Regards,
Zyloch
0
 
ZylochCommented:
Oops, this: substr($1.$2,$f_len,($h-$f_len)); should be
substr($1.$2,$f_len,($l-$f_len));

Regards
0
 
chrisnetonlineAuthor Commented:
how would this be implemented though? i dont see how that code is being run on the URL...
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ZylochCommented:
Try putting it on the line after $search = blah but before $replace = blah
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chrisnetonlineAuthor Commented:
okay so here's the code i have:

<?php

function run_test($str)
{
      $search = array('#\[url]([a-z0-9]+?://){1}([\w\-]+\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*)?)\[/url\]#', '#\[url]((www|ftp)\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*?)?)\[/url\]#');
      
      if ($l=strlen($1.$2)>30) {
         $checkEnd=explode("/",$1.$2);
         $f_len=strlen($checkEnd(count($checkEnd)-1))+3;
         $f_len=gmp_neg($f_len);
         $cut_link=substr($1.$2,0,23)."...".substr($1.$2,$f_len,($l-$f_len));
      } else {
         $cut_link=$1.$2;
      }

      $replace = array('<a href="\1\2" target="_blank" title="\1\2">'.$cut_link.'</a>', '<a href="http://\1" target="_blank" title="\1">'.$cut_link.'</a>' );
      $str = preg_replace($search, $replace, $str);
      return $str;
}

echo run_test("[url]http://www.experts-exchange.com/Web/Web_Languages/PHP/Q_21124048.html[/url]");

?>

i get the following error:

Parse error: parse error, unexpected T_DNUMBER, expecting T_VARIABLE or '$' in /var/www/html/chris/test.php on line 7
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ZylochCommented:
Try changing this line:

$f_len=strlen($checkEnd(count($checkEnd)-1))+3; to
$f_len=strlen($checkEnd[count($checkEnd)-1])+3;
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chrisnetonlineAuthor Commented:
still getting the following error:

Parse error: parse error, unexpected T_DNUMBER, expecting T_VARIABLE or '$' in /var/www/html/chris/test.php on line 7
0
 
ZylochCommented:
Er... you can try this

preg_match($search,$str);
$t=$1.$2;
if ($l=strlen($t)>30) {
        $checkEnd=explode("/",$t);
        $f_len=strlen($checkEnd[count($checkEnd)-1])+3;
        $f_len=gmp_neg($f_len);
        $cut_link=substr($t,0,23)."...".substr($t,$f_len,($l-$f_len));
} else {
        $cut_link=$t;
}
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chrisnetonlineAuthor Commented:
Thank you Zyloch... your code lead me to the answer i was looking for... the completed code is included below


function shorten_url($matches)
{
      $str=$matches[1].$matches[2];
      $len=strlen($str);
      if($len > 50)
      {
            $checkEnd=explode('/', $str);
            $f_len=strlen($checkEnd[count($checkEnd)-1])+1;
            if($f_len == 1)
            {
                  $f_len=strlen($checkEnd[count($checkEnd)-2])+1;
            }
            elseif($f_len < 25)
            {
                  $f_len=(($f_len < 0)?($f_len * -1):($f_len * -1));
                  $cut_link=substr($str, 0, 25).'...'.substr($str, $f_len, ($len-$f_len));
            }
            else
            {
                  $cut_link=substr($str, 0, 25).'...'.substr($str, -25);
            }
      }
      else
      {
            $cut_link=$str;
      }
      return '<a href="'.$str.'" target="_blank" title="'.$str.'">'.$cut_link.'</a>';
}

$str = '[url]http://www.experts-exchange.com/Web/Web_Languages/PHP/Q_21124048.html[/url]';
$search = array('#\[url]([a-z0-9]+?://){1}([\w\-]+\.([\w\-]+\.)*[\w]+(:[0-9]+)?(/[^ \"\n\r\t<]*)?)\[/url\]#');
$str = preg_replace_callback($search, 'shorten_url', $str);
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