- preg_replace: documentation ( source)
<?php
$html = <<<'HTML'
some content here <a href="/uploads/2014/04/Draft-99990-Details.doc">Draft 99995 Details</a> more text here <a href="/uploads/2014/04/01090-vs-G01010-series.pdf">01095 vs G01015 Series</a> and some final text here
HTML;
$dom = new DOMDocument;
$dom->loadHTML($html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED);
$replacement = 'FOO';
foreach ($dom->getElementsByTagName('a') as $node) {
$href = $node->getAttribute('href');
$node->setAttribute('href', preg_replace('/([a-z])?\d{5}/i', $replacement, $href));
}
echo $dom->saveHTML();