$re = '/<div class="podEventRow[^>]+>(\s*<div class="[^>]+>\s*(<span[^>]+>|</span>|</?em>|[\s0-9/,.+-]+)+[^<]*</div>\s*)+</div>/s';
$str = '<div class="podEventRow singleRow" data-plbtid="50139">
<div class="wideLeftColumn centered"><em>4.0, 4.5</em></div>
<div class="priceColumn third " data-nav="pt=N#o=27/5#f=54849113#fp=962365111#so=0#c=1#ln=4.25" data-displayorder="27">6.400</div>
<div class="priceColumn third " data-nav="pt=N#o=23/200#f=54849113#fp=962365112#so=0#c=1#ln=4.25" data-displayorder="28">1.115</div>
</div>';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php