Online PHP editor | refs for IAqH6

<?php function applyHLToSiblings(DOMDocument $D){ $words[0] = "cart"; /* $words[1] = "car"; $words[2] = "cartel"; $words[3] = "art"; $words[4] = "drug"; $words[5] = "drugs"; $words[6] = "rug"; $words[7] = "rugs"; */ $mt = function($content) use($D){ return $D->createTextNode($content); }; $ms = function($name, $content = null) use($D){ $span = $D->createElement("span"); $span->setAttribute("class", "word$name"); $content === null ?: $span->appendChild($content); return $span; }; $ps = function($siblingsContainer, $searchString, $name) use($D, $ms, $mt){ foreach($siblingsContainer->childNodes as $node){ if($node instanceof DOMText){ if(mb_strlen($node->textContent, "UTF-8") >= mb_strlen($searchString)){ $o = mb_strpos($node->textContent, $searchString); if($o !== false){ $l = mb_strlen($searchString, "UTF-8"); $before = mb_substr($node->textContent, 0, $o); $wrap = mb_substr($node->textContent, $o, $l); $after = mb_substr($node->textContent, $o + $l); $before = $ms($name, $wrap); $newSpan->textContent = $wrap; !$before ?: $node->insertBefore($node->nextSibling, $mt($before)); $node->insertBefore($node->nextSibling, $ms($mt($wrap), $name)); !$after ?: $node->insertBefore($node->nextSibling, $mt($after)); } } } } }; foreach($words as $name => $word) $ps($D->documentElement, $word, $name); } $x = new DOMDocument(); $x->loadXML("<data>drugs cartel</data>"); applyHLToSiblings($x); var_dump($x->saveXML());