$subject = "<br /><br /><table style="width:90%; height:0px;margin:auto;"><tr><td class="code"><strong>Code<br /></strong><code>$1</code></td></tr></table><br />";
$pattern = '!\(code\)(.+)\(/code\)!iUs';
preg_match($pattern, substr($subject,3), $chaine, PREG_OFFSET_CAPTURE);
print_r($chaine);