<?php
require 'vendor/autoload.php';
use PhpOffice\PhpSpreadsheet\IOFactory;

function analyze($file) {
    echo "--- ANALYZING: $file ---\n";
    try {
        $spreadsheet = IOFactory::load($file);
        $worksheet = $spreadsheet->getActiveSheet();
        $rows = $worksheet->toArray();
        echo "HEADERS:\n";
        if (isset($rows[0])) {
            foreach ($rows[0] as $idx => $h) echo "Col $idx: " . ($h ?? "NULL") . "\n";
        }
        echo "SAMPLE DATA (Row 2):\n";
        if (isset($rows[1])) echo implode(" | ", array_map(fn($v) => $v ?? "NULL", $rows[1])) . "\n";
    } catch (Exception $e) {
        echo "Error: " . $e->getMessage() . "\n";
    }
    echo "\n";
}

analyze('storage/app/imports/Hd_kh.xlsx');
analyze('storage/app/imports/hopdong.xlsx');