searchanddisplace-core/app/SearchDisplace/SearchAndDisplaceXML.php

<?php

namespace App\SearchDisplace;

use Symfony\Component\Process\Process;

class SearchAndDisplaceXML
{
    protected $file;
    protected $searchers;
    protected $type;

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

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

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

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

        foreach($dom->getElementsByTagName('span') as $p) {
            $search = new SearchAndDisplace(
                stripslashes($p->textContent),
                [
                    'searchers' => $this->searchers,
                ],
                false,
                true
            );
    
            $changed = $search->execute();

            if(!$changed) {
                continue;
            }

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

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