searchanddisplace-core/app/SearchDisplace/SearchAndDisplaceXML.php

<?php

namespace App\SearchDisplace;

use Symfony\Component\Process\Process;

class SearchAndDisplaceXML
{
    protected $file;
    protected $searchers;

    public function __construct($file, $searchers)
    {
        $this->file = $file;
        $this->searchers = $searchers;
    }

    public function execute()
    {
        $this->applySD();

        $this->convertToOdt();
    }
    
    protected function convertToOdt()
    {
        (new Process(['soffice', '--convert-to', 'odt', $this->file, '--outdir', storage_path('app/tmp/')]))->run();
    }

    protected function applySD()
    {
        $dom = new \DOMDocument();
        $dom->load($this->file);

        foreach($dom->getElementsByTagName('p') as $p) {
            $is_image = false;
            if($p->childNodes) {
                foreach($p->childNodes as $child) {
                    if(isset($child->tagName) && $child->tagName == 'draw:frame') {
                        $is_image = true;
                    }
                }
            }
            if(!$is_image) {
                $search = new SearchAndDisplace(
                    stripslashes($p->textContent),
                    [
                        'searchers' => $this->searchers,
                    ],
                    false,
                    true
                );
        
                $changed = $search->execute();

                if(!$changed) {
                    continue;
                }

                $p->textContent = $changed['content'];
            }
        }

        $dom->save($this->file);
    }
}