$re = '/(<\/script>[\s\S]*?<\/script>)/m';
$str = '<h2>Misrepresentation of the Facts</h2>
</script>
<!-- Articles - Leaderboard 728x90 -->
</iframe></ins></ins></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
<h2>Who Can Commit the Crime</h2>
</script>
<!-- Articles - Leaderboard 728x90 -->
</iframe></ins></ins></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>';
$subst = "";
$result = preg_replace($re, $subst, $str);
echo "The result of the substitution is ".$result;
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