Joomla parse shortcode for import

snippet.php

<?php

function findBetween($string, $tag) {
  $regex = '#{'.$tag.'}(.*?){/'.$tag.'}#';
  preg_match($regex, $string, $matches);
  return isset($matches[1]) ? $matches[1] : null;
}

$string = '["{mp4}LB_tr2min_w{\/mp4}"]';
$result = json_decode($string);


foreach($result as $k => $video)
{
  $mp4        = findBetween($video, 'mp4');
  $youtube    = findBetween($video, 'YouTube');

  echo "<pre>";
  var_dump($mp4);
  echo "</pre>";

  echo "<pre>";
  var_dump($youtube);
  echo "</pre>";
}