class.ilMailBodyPurifier.php

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<?php

declare(strict_types=1);

class ilMailBodyPurifier
{
    public function purify(string $content): string
    {
        $sanitized_content = ilUtil::stripSlashes($content);
        if ($sanitized_content !== $content) {
            $sanitized_content = ilUtil::stripSlashes(str_replace('<', '< ', $content));
        }

        return str_replace(chr(13), '', $sanitized_content);
    }
}