问如何在php中跳过Excel文件的几行？

EN

<?php

require_once 'PHPExcel/Classes/PHPExcel/IOFactory.php';
$path = 'C:/wamp64/www/Extract_pictures_Excel/imagetest.xlsx';
$objPHPExcel = PHPExcel_IOFactory::load($path);

$i = 0;

foreach ($objPHPExcel->getActiveSheet()->getDrawingCollection() as $drawing ) {
    $i++;
  

    if ($drawing instanceof PHPExcel_Worksheet_MemoryDrawing) {
        ob_start();
        call_user_func(
            $drawing->getRenderingFunction(),
            $drawing->getImageResource()
        );
        $imageContents = ob_get_contents();
        ob_end_clean();
        switch ($drawing->getMimeType()) {
            case PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_PNG :
                    $extension = 'png'; break;
            case PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_GIF:
                    $extension = 'gif'; break;
            case PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_JPEG :
                    $extension = 'jpg'; break;   
     }
    } 

    else {
        $zipReader = fopen($drawing->getPath(),'r');
        $imageContents = '';
        while (!feof($zipReader)) {
            $imageContents .= fread($zipReader,1024);
        }
        fclose($zipReader);
        $extension = $drawing->getExtension();
        $chemin = 'C:/wamp64/www/Extract_pictures_Excel/images/';
     
    }

    $sheet = $objPHPExcel->getActiveSheet();
    foreach ($sheet->getDrawingCollection() as $drawing) {
    $row = (int)substr($drawing->getCoordinates(), 1);

  // retrieve the image data anyway you like

    $stylecode = $sheet->getCell('B'.$row)->getValue();
    $colorcode = $sheet->getCell('C'.$row)->getValue();
    $finalname = $stylecode.'_'.$colorcode;
    $myFileName = $chemin.$finalname.'.'.$extension;
    file_put_contents($myFileName,$imageContents);
 
  }
}
 ?>