Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Shared/OLE.php
public static function ascToUcs($ascii)
    {
        $rawname = '';
        $iMax = strlen($ascii);
        for ($i = 0; $i < $iMax; ++$i) {
            $rawname .= $ascii[$i]
                . "\x00";
        }

        return $rawname;
    }
public static function ascToUcs($ascii)
    {
        $rawname = '';
        $iMax = strlen($ascii);
        for ($i = 0; $i < $iMax; ++$i) {
            $rawname .= $ascii[$i]
                . "\x00";
        }

        return $rawname;
    }
Utility function to transform ASCII text to Unicode.

@param string $ascii The ASCII string to transform

@return string The string in Unicode