templateBlockDeletion.php

<?php
public function deleteTemplateBlock($blockName)
{
    $aType = array('BLOCK_'/* , 'TAB_' */); //deletables types
    foreach ($aType as $type) {
        $variableName = $type . $blockName;
        $loadContent = $this->_documentXMLElement . '<w:body>' .
                $this->_wordDocumentC . '</w:body></w:document>';
        if (!self::$_preprocessed) {
            $loadContent = $this->repairVariables(array($variableName => ''), $loadContent);
        }
        $loadContent = preg_replace('/\\' . self::$_templateSymbol . $type . $blockName . '([|]|\\' . self::$_templateSymbol . ').*?\\' . self::$_templateSymbol . $type . $blockName . '.*?\\' . self::$_templateSymbol . '/', self::$_templateSymbol . $variableName . self::$_templateSymbol, $loadContent);
        //Use XPath to find all paragraphs that include the variable name
        $name = self::$_templateSymbol . $variableName . self::$_templateSymbol;
        $domDocument = new DOMDocument();
        $domDocument->loadXML($loadContent);
        $xpath = new DOMXPath($domDocument);
        $xpath->registerNamespace('w', 'http://schemas.openxmlformats.org/wordprocessingml/2006/main');
        $query = '//w:p[w:r/w:t[text()[contains(.,"' . $variableName . '")]]]';
        $affectedNodes = $xpath->query($query);
        /** @var DOMNode $node */
        foreach ($affectedNodes as $node) {
            $paragraphContents = $node->ownerDocument->saveXML($node);
            $paragraphText = strip_tags($paragraphContents);
            if (($pos = strpos($paragraphText, $name, 0)) !== false) {
                //If we remove a paragraph inside a table cell we need to take special care
                if ($node->parentNode->nodeName == 'w:tc') {
                    $tcChilds = $node->parentNode->getElementsByTagNameNS('http://schemas.openxmlformats.org/wordprocessingml/2006/main', 'p');
                    if ($tcChilds->length > 1) {
                        $node->parentNode->removeChild($node);
                    } else {
                        $emptyP = $domDocument->createElement("w:p");
                        $node->parentNode->appendChild($emptyP);
                        $node->parentNode->removeChild($node);
                    }
                } else {
                    $node->parentNode->removeChild($node);
                }
            }
        }
        $bodyTag = explode('<w:body>', $domDocument->saveXML());
        $this->_wordDocumentC = str_replace('</w:body></w:document>', '', $bodyTag[1]);
    }
}