<?php
$html = <<< EOF
<!DOCTYPE html>
<head>
<title>Image Holder</title>
</head>
<body>
<header>
<a href="#"><img src="http://e...content-available-to-author-only...l.com/logo.png"></a>
<div id="side">
<div id="facebook"><img src="http://e...content-available-to-author-only...l.com/fb.png"></div>
<div id="twiiter"><img src="http://e...content-available-to-author-only...l.com/t.png"></div>
<div id="gplus"><img src="http://e...content-available-to-author-only...l.com/gp.png"></div>
</div>
</header>
<div class="container">
<p>SOme Post</p>
<img src="http://e...content-available-to-author-only...l.com/some.png" title="some image" />
<p>SOme Post</p>
<img src="http://e...content-available-to-author-only...l.com/some.png" title="some image" />
<p>SOme Post</p>
<img src="http://e...content-available-to-author-only...l.com/some.png" title="some image" />
</div>
<footer>
<div id="foot">
copyright © 2013
</div>
</footer>
</body>
</html>
EOF;
$doc = new DOMDocument();
$doc->loadHTML($html); // loads your html
$xpath = new DOMXPath($doc);
$nodelist = $xpath->query("//div[@class='container']/img");
for($i=0; $i < $nodelist->length; $i++) {
$node = $nodelist->item($i);
$img[] = $node->getAttribute('src');
}
?>
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