[RESOLVED] preg_replace question

[lpa]

Hello,

Code:

$text = preg_replace("@\[img\]http://www.mydomain.com(.*)\[\/img\]@si",
"<img src=\"$1\" border=\"0\" />", $text);

2 questions:

1. Any better method how to allow only local images in bbcode (only images hosted on the same domain - www.modomain.com)?
2. Any way how to ignore empty [image]http://www.mydomain.com[/code] bbcodes to avoid empty <img src="" border="0"> html tags?

[NogDog]

While I'd feel better about using one of the non-regexp-based BBCode solutions out there, you could do something like:

<?php
function replace($matches)
{
   $myHost = 'mydomain.com'; // change this to your host
   $url = trim($matches[1]);
   if($url === '') {
      return '';
   }
   $host = parse_url($url, PHP_URL_HOST);
   if(!preg_match('#(.*\.)?'.preg_quote($myHost).'$#i', $host)) {
      return '';
   }
   return "<img src='".htmlspecialchars($url)."' alt='' />";
}

$text = <<<EOD
This is a [img]http://www.mydomain.com/images.png[/img] test.
It is only a [img]http://www.anotherdomain.com/images.jpg[/img] test.
EOD;

$text = preg_replace_callback('#\[img\](.*?)\[/img\]#', 'replace', $text);
echo "<pre>".htmlspecialchars($text)."</pre>"; // test output

[lpa]

Thanks NogDog.