crm/extend/cutExcel/MyAheadreadFilter.php

<?php
namespace cutExcel;
/**
 * 预读过滤类
 * @author wangyelou 
 * @date 2018-07-30
 */
class MyAheadreadFilter implements \PhpOffice\PhpSpreadsheet\Reader\IReadFilter
{
    public $record = array();
    private $lastRow = '';

    public function readCell($column, $row, $worksheetName = '') 
    {
        if (isset($this->record[$worksheetName]) ) {
            if ($this->lastRow != $row) {
                $this->record[$worksheetName] ++;       
                $this->lastRow = $row;
            } 
        } else {
            $this->record[$worksheetName] = 1;       
            $this->lastRow = $row;
        }
        return false;
    }
}