nhance/app/Helpers/excel_util_helper.php

<?php

if (!function_exists('check_columns_count')) {
    function check_columns_count($definedColumns,$excelColumns)
    {
        $mismatchedColumns = [];

        foreach ($definedColumns as $colName => $definedCol) {
            $definedColIdx = $definedCol['col_idx'];
            $definedColName = $definedCol['col_name'];

            if ($excelColumns[$definedColIdx] !== $definedColName) {
                $mismatchedColumns[] = "Column order conflict. Column order no ".($definedColIdx + 1)." expected : ".$definedColName." and received : ".$excelColumns[$definedColIdx];
            }
        }

        return $mismatchedColumns;
    }
}


if (!function_exists('check_row_is_empty_or_null')) {

    function check_row_is_empty_or_null($arr) {
        unset($arr[0]);// unset SNO in the array, becoz we need to check only datapoints are empty not SNo, it may added by accidentally
        foreach ($arr as $item) {
            if ($item !== null && !empty($item)) {
                return false; // If any item is not empty or not null, return false
            }
        }
        return true; // If all items are empty or null, return true
    }
}

if (!function_exists('check_excel_date_format')) {

    function check_excel_date_format($dateString,$format) 
    {
       
       if($dateString == ""){  return array('status' => true); }
        $date = DateTime::createFromFormat('d-M-Y', $dateString);
        
        if ($date !== false && !is_array($date::getLastErrors())) {
             return array('status' => true);
        } else {
             return array('status' => false,'error' => "wrong date format: Expected 'd-M-Y' and received $dateString");
        }
    }
}


if(!function_exists('check_relationship'))
{
    function check_relationship($row,$relationship)
    {
        // print_r($col);print_r($relationship);
        // echo '<br>';
        if($row[5] != null && $row[4] != null)
        {
            $slug = \Config\Services::slug();
            $col = $slug->slugify($row[5]);
            // echo $col;die();
            if($col != 'self' && $col != 'spouse')
            {
                if($relationship[ $col ]['sex'] != $row[4])
                {
                    $error = "Gender relationship conflict: Expected ".$relationship[ $col ]['sex'].", received $row[4]";
                    return array('status' => false,'error' => $error);
                }
                
            }
            return array('status' => true);
        }
        else
        {
            return array('status' => false,'error' => 'Rule Conflict: Both Relationship or Gender required');
        }
    }
}


if(!function_exists('check_doj'))
{
    function check_doj($row)
    {
        $slug = \Config\Services::slug();
        $relationship = $slug->slugify($row[5]);
        // echo $relationship;echo $row[7];
        if($relationship == 'self' && $row[7] == "") { return array('status' => false,'error' => "DOJ mandantory for self"); }
        return array('status' => true);
    }
}


if(!function_exists('check_employee_band'))
{
    function check_employee_band($row)
    {
        $slug = \Config\Services::slug();
        $relationship = $slug->slugify($row[5]);
        // echo $relationship;echo $row[7];
        if($relationship == 'self' && $row[9] == "") { return array('status' => false,'error' => "Band mandantory for self"); }
        return array('status' => true);
    }
}

if(!function_exists('check_basic_pay'))
{
    function check_basic_pay($row)
    {
        $slug = \Config\Services::slug();
        $relationship = $slug->slugify($row[5]);
        // echo $relationship;echo $row[7];
        if($relationship == 'self' && $row[8] == "") { return array('status' => false,'error' => "Basic pay mandantory for self"); }
        return array('status' => true);
    }
}


if (!function_exists('check_dob_diff')) 
{
    function check_dob_diff($row,$relationships) {
        // echo 'called';
        if($row[3] != null && $row[5] != null)
        {
            $dob = change_date_format($row[3],'d-M-Y','Y-m-d');
            // echo $row[3].' - '.$dob;echo '<br>';
            $currentDateTime = new DateTime();//die();
            $passedDateTime = new DateTime($dob);
            $interval = $currentDateTime->diff($passedDateTime);

            $slug = \Config\Services::slug();
            $relationship = $slug->slugify($row[5]);
            $age_min = $relationships[$relationship]['age_min'];
            $age_max = $relationships[$relationship]['age_max'];
            // echo $relationship.','.$age_min.'-'.$age_max;
            if($age_min !== null && $age_min > $interval->y)
            {
                return array('status' => false,'error' => "Age conflict : minimum $age_min yrs allowed, received $interval->y");
            }
            if($age_max !== null && $age_max < $interval->y)
            {
                return array('status' => false,'error' => "Age conflict : maximum $age_max yrs allowed, received $interval->y");
            }
            return array('status' => true);
        }
        else
        {
            return array('status' => false,'error' => 'Rule Conflict: Both DOB or Relationship required');
        }
    }
}