Online PHP editor | output for saAPi

<?php $html = <<<HTML 0 Dollar 0.01 Dollar 0.00 Dollar 50.00 Dollar HTML; $dom = new DOMDocument; $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD); $xp = new DOMXPath($dom); $xp->registerNamespace("php", "http://php.net/xpath"); $xp->registerPHPFunctions('preg_match'); $pattern = '/\A(?=[0.]*[1-9])\d+(?:\.\d+)?+\h+Dollar\z/'; $spans = $xp->query("//span[php:functionString('preg_match', '$pattern', text())>0]"); foreach ($spans as $span) { echo $span->nodeValue . PHP_EOL; }