Error with the Calculation of VLOOKUP cells

[c-louis]

Hello 😄

This is:

- [x] a bug report
- [ ] a feature request
- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpspreadsheet or https://gitter.im/PHPOffice/PhpSpreadsheet)

What is the expected behavior?

VLOOKUP should find the cell and retrieve the value

What is the current behavior?

TypeError because of strToLower which happens because of an error of the evaluation of the formula

PHP Fatal error: Uncaught TypeError: PhpOffice\PhpSpreadsheet\Shared\StringHelper::strToLower(): Argument #1 ($textValue) must be of type string

What are the steps to reproduce?

<?php

require __DIR__ . '/vendor/autoload.php';

use \PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

$doc = "doc2.xlsx";

$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($doc);
$sheet = $spreadsheet->getActiveSheet();

evaluate($spreadsheet, $sheet, "C2");

function evaluate( $spreadSheet,  $workSheet,  $cellAddress)
{
    // Initialise the calculation engine for debug logging
    $calculationEngine = Calculation::getInstance($spreadSheet);
//    $calculationEngine->disableBranchPruning();
    $debugLog = $calculationEngine->getDebugLog();

    $calculationEngine->flushInstance();
    $debugLog->setWriteDebugLog(true);
//    $debugLog->setEchoDebugLog(true);

    $formulaValue = $workSheet->getCell($cellAddress)->getValue();

    echo PHP_EOL, 'Formula value for evaluation is ', $formulaValue, PHP_EOL;

    $canExecuteCalculation = false;

    try {
        $tokens = $calculationEngine->parseFormula($formulaValue);
        $canExecuteCalculation = true;
    } catch (Exception $e) {
        echo 'PARSER ERROR: ', $e->getMessage(), PHP_EOL;
    } finally {
        echo 'Parser Stack :-';
        print_r($tokens ?? PHP_EOL . 'NULL');
    }

    $callStartTime = microtime(true);

    if ($canExecuteCalculation) {
        //  calculate
        try {
            $cellValue = $workSheet->getCell($cellAddress)
                ->getCalculatedValue();

            echo 'Result is ', $cellValue, PHP_EOL;

            echo 'Evaluation Log:', PHP_EOL;
            print_r($debugLog->getLog());
        } catch (Exception $e) {
            echo 'CALCULATION ENGINE ERROR: ', $e->getMessage(), PHP_EOL;

            echo 'Evaluation Log:', PHP_EOL;
            print_r($debugLog->getLog());
        }
    }

    $callEndTime = microtime(true);
    $callTime = $callEndTime - $callStartTime;

    echo PHP_EOL;
    echo 'Call time to evaluate formula was ', sprintf('%.4f', $callTime), ' seconds', PHP_EOL;

    return $cellValue ?? null;
}

Here is the file I use to test (It's a minimal version of it, showing the bug) :

doc2.xlsx

What features do you think are causing the issue

• Reader
• Writer
• Styles
• Data Validations
• Formula Calulations
• Charts
• AutoFilter
• Form Elements

Does an issue affect all spreadsheet file formats? If not, which formats are affected?

xlsx

Which versions of PhpSpreadsheet and PHP are affected?

1.24.0

What I did try to investigate :

If you remove the "FALSE" of =VLOOKUP(B2;Sheet2!B:C;2;FALSE) then it doesnt bug anymore.

[Moongun]

Hey. Have the same issue. Part of exception message below :):
"PhpOffice\\PhpSpreadsheet\\Shared\\StringHelper::strToLower(): Argument #1 ($textValue) must be of type string, null given, called in \/.\/vendor\/phpoffice\/phpspreadsheet\/src\/PhpSpreadsheet\/Calculation\/LookupRef\/VLookup.php on line 72"

[pcphatweb]

I have same issue when I work with merge cell null value and luckily the bug was fixed ^^
THANKS ALL!