Hyperlink.php

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<?php

namespace PhpOffice\PhpSpreadsheet\Calculation\LookupRef;

use PhpOffice\PhpSpreadsheet\Calculation\Functions;
use PhpOffice\PhpSpreadsheet\Cell\Cell;

class Hyperlink
{
    public static function set($linkURL = '', $displayName = null, ?Cell $pCell = null)
    {
        $linkURL = ($linkURL === null) ? '' : Functions::flattenSingleValue($linkURL);
        $displayName = ($displayName === null) ? '' : Functions::flattenSingleValue($displayName);

        if ((!is_object($pCell)) || (trim($linkURL) == '')) {
            return Functions::REF();
        }

        if ((is_object($displayName)) || trim($displayName) == '') {
            $displayName = $linkURL;
        }

        $pCell->getHyperlink()->setUrl($linkURL);
        $pCell->getHyperlink()->setTooltip($displayName);

        return $displayName;
    }
}