$re = '/<div\sid=\"[\s\S]*?dp_productDescription_container_div[\s\S]*?<div\sid=\"productDescription_feature_div[\s\S]*?<div[\s\S]*?<div[\s\S]*?<div\sid=\"productDescription[\s\S]*?>([\s\S]*?<p>[\s\S]*?<\/p>\s*)<\/div>/m';
$str = '<div id="dp_productDescription_container_div" class="feature" data-feature-name="productDescription" data-cel-widget="dp_productDescription_container_div">
<div id="productDescription_feature_div" data-feature-name="productDescription" data-template-name="productDescription" class="a-row feature" data-cel-widget="productDescription_feature_div">
<div class="a-divider a-divider-section"><div class="a-divider-inner"></div></div>
<h2 class="softlines">
Product description
</h2>
<div id="productDescription" class="a-section a-spacing-small">
<!-- show up to 2 reviews by default -->
<p>Train better. Look great. The Vazee agility trainer supports your interval workouts with an exciting blend of fashionable colors and a newly designed performance lace mesh upper for support and breathability.
</p>
<p>Train better. Look great. The Vazee agility trainer supports your interval workouts with an exciting blend of fashionable colors and a newly designed performance lace mesh upper for support and breathability.
</p>
</div>
<style type="text/css">
#productDescription {
color: #333333;
word-wrap: break-word;
font-size: small;
line-height: initial;
margin: 0.5em 0px 0em 25px;
}
#productDescription_feature_div > h2.default {
color: #CC6600;
font-size: medium;
margin: 0 0 0.25em;
}
#productDescription_feature_div > h2.books {
color:#333 !important;
font-size:21px !important;
line-height: 1.3;
padding-bottom: 4px;
font-weight: normal;
margin: 0px;
}
#productDescription_feature_div > h2.softlines {
color:#333 !important;
font-size:21px !important;
line-height: 1.3;
padding-bottom: 4px;
font-weight: bold;
margin: 0px;
}
#productDescription > p, #productDescription > div, #productDescription > table {
margin: 0 0 1em 0;
}
#productDescription p {
margin: 0em 0 1em 1em;
}
#productDescription h3 {
font-weight: normal;
color: #333333;
font-size: 1.23em;
clear: left;
margin: 0.75em 0px 0.375em -15px;
}
#productDescription table {
border-collapse: inherit !important;
margin-bottom: 0;
}
#productDescription table img {
max-width: inherit !important;
}
#productDescription table td {
font-size: small;
vertical-align: inherit !important;
}
#productDescription ul li {
margin: 0 0 0 20px;
}
#productDescription ul li ul {
list-style-type: disc !important;
margin-left: 20px !important;
}
#productDescription ul ul li {
list-style-type: disc !important;
margin-left: 20px !important;
}
#productDescription > ul ul li {
list-style-type: disc !important;
}
#productDescription ul li ul li {
margin: 0 0 0 20px;
}
#productDescription .aplus p {
margin: 0 0 1em 0;
}
#productDescription small {
font-size: smaller;
}
#productDescription.prodDescWidth {
max-width: 1000px
}
</style>
<!-- Used to set table width because AUI is overriding the width attribute of the tables coming in description -->
<script type="text/javascript">
P.when(\'jQuery\').execute(function($){
$("#productDescription table").each(function() {
var width = $(this).attr(\'width\');
if (width) width += \'px\';
else width = \'auto\';
$(this).css(\'width\', width);
var padding = $(this).attr(\'cellpadding\');
if (padding) padding += \'px\';
else padding = \'0px\';
$(this).css(\'padding\', padding);
});
});
</script>
</div>
</div>';
preg_match_all($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