how to replace certain tag from first and last ??

[PHPycho]

Hello forums..
Can anybody give a hint for how to replace the first <ul> and last </ul> tag from the string $string:

$string = '<ul>
  <li></li>
  <li>
    <ul>
      <li>        

      </li>
      <li></li>     

    </ul>
  </li>
  <li></li>
</ul>';

Thanks in advance to all of you.

[tbankar]

Hi,
try this,

$patterns[0] = '/<ul>/';
$patterns[1] = '/</ul>/';

$replacements[0] = 'Enter the replacement for <ul> here';
$replacements[1] = 'Enter the replacement for </ul> here';

echo preg_replace($patterns, $replacements, $string);

Regards

[toxic_brain]

this will repalce the first and last ul tags with zerolength space.

$pattern = "/^<ul>|<\/ul>$/" ;
$string = preg_replace($pattern, '', $string) ;