phpspreadsheet_read_all_xlsx.php

<?php

ini_set('memory_limit', '512M');
$inputFileName = public_path('mutasi.xlsx');

/**  Identify the type of $inputFileName  **/
$inputFileType = \PhpOffice\PhpSpreadsheet\IOFactory::identify($inputFileName);

/**  Create a new Reader of the type that has been identified  **/
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);

/**  Load $inputFileName to a Spreadsheet Object  **/
$spreadsheet = $reader->load($inputFileName);

/**  Convert Spreadsheet Object to an Array for ease of use  **/
$schdeules = $spreadsheet->getActiveSheet()->toArray();
foreach( $schdeules as $single_schedule )
{
    echo '<div class="row">';
    foreach( $single_schedule as $single_item )
    {
        echo '<p class="item">' . $single_item . '</p>';
    }
    echo '</div>';
}