You can access images by PHPExcel library.

For importing images:

$objPHPExcel = PHPExcel_IOFactory::load("MyExcelFile.xls");

foreach ($objPHPExcel->getSheetByName("My Sheet")->getDrawingCollection() as $drawing) {
    if ($drawing instanceof PHPExcel_Worksheet_MemoryDrawing) {
        ob_start();
        call_user_func(
            $drawing->getRenderingFunction(),
            $drawing->getImageResource()
        );
        $imageContents = ob_get_contents();
        ob_end_clean();
    }
}

Then $imageContents will contain the image data that you can output or save as a file etc. You can see this question: PHPExcel: How to insert an image in the first page header and enlarge it to fit it s content?

For accessing images:

ArrayObject of all the image objects in the active worksheet will return by:

$objPHPExcel->getActiveSheet()->getDrawingCollection() ;

These objects will be either PHPExcel_Worksheet_Drawing or PHPExcel_Worksheet_MemoryDrawing objects: you can identify which using is_a(). You can then use the methods appropriate to that class (as described in the API) either to read the image data from file (for PHPExcel_Worksheet_Drawing objects) or directly from the PHPExcel_Worksheet_MemoryDrawing object itself. The getName() and getDescription() methods can be used to retrieve the relevant values fro the image object.

Now it s also possible to have image objects associated with print headers:

$objPHPExcel->getActiveSheet()->getHeaderFooter()->getImages() 

can be used to retrieve images from the header/footer. This is an array of PHPExcel_Worksheet_HeaderFooterDrawing objects. All the PHPExcel_Worksheet_Drawing methods can be used to extract the image file from these objects.

PHPExcel does support images, although it doesn t yet support charts

EDIT

Chart reader support added for Excel 2007+ .xlsx files in version 1.7.7 of PHPExcel

To import data from Excel (or any other program that can produce a text file) is very simple using the LOAD DATA command from the MySQL Command prompt.

1) Save your Excel data as a csv file (In Excel 2007 using Save As) Check the saved file using a text editor such as Notepad to see what it actually looks like, i.e. what delimiter was used etc.

2) LOAD DATA LOCAL INFILE ‘C: empyourfile.csv’ INTO TABLE database.table FIELDS TERMINATED BY ‘;’ ENCLOSED BY ‘”‘ LINES TERMINATED BY ‘ ’ (field1, field2);

3) To store image to have to use TO_BASE64

Done!

Reference