! Codeigniter cannot call PHPExcel

Urgent help! Codeigniter cannot call PHPExcel. I am a beginner in Codeigniter. I used the file upload class to upload csv or excel files. at the same time, I used PHPExcel to read the content and load it into the database. My program is as follows: controllers/products. php file: & nbsp urgent help! Codeigniter cannot call PHPExcel
I am a beginner in Codeigniter. I used my file Upload class to upload csv or excel files. at the same time, I used PHPExcel to read the content and load it into the database. My program is as follows:
Controllers/products. php file:

$ Memsn = $ this-> session-> userdata ('memsn ');
$ This-> load-> library ('Excel _ Read_Operat ');
$ Groups = array ('purchaser ', 'Salesman', 'Viewer', 'merchant ');
If ($ this-> ion_auth-> in_group ($ groups ))
{
$ This-> session-> set_flashdata ('message', $ this-> lang-> line ("access_denied "));
$ Data ['message'] = (validation_errors ()? Validation_errors (): $ this-> session-> flashdata ('message '));
Redirect ('module = products', 'refresh ');
}

$ This-> form_validation-> set_rules ('userfile', $ this-> lang-> line ("upload_file"), 'xss _ clean ');

If ($ this-> form_validation-> run () = true)
{
If (isset ($ _ FILES ["userfile"]) {
$ This-> load-> library ('upload _ photo ');

$ Dest_dir = 'uploads/'. $ memsn .'/';

$ This-> dest_dir_fortest = $ dest_dir;

If ($ this-> upload_photo-> direct_is_exists ($ dest_dir )){

} Else {
Redirect ("module = products & view = upload_csv", 'refresh ');
}

$ Config ['upload _ path'] = $ dest_dir;
$ Config ['allowed _ types'] = 'csv | xls | xlsx ';
$ Config ['max _ size'] = '000000 ';
$ Config ['overwrite'] = TRUE;

$ Old_file_name = $ _ FILES ["userfile"] ["name"];
$ New_file_name = $ this-> getSystemTime (). $ _ FILES ["userfile"] ["name"];
$ Config ['File _ name'] = $ new_file_name;

// Initialize
$ This-> upload_photo-> initialize ($ config );

If (! $ This-> upload_photo-> do_upload ()){

// Echo the errors
$ Error = $ this-> upload_photo-> display_errors ();
$ This-> session-> set_flashdata ('message', $ error. $ dest_dir );
Redirect ("module = products & view = upload_csv", 'refresh ');
}


If ($ this-> upload_photo-> file_ext = '.csv '){

$ Csv = $ this-> upload_photo-> file_name;


Excel_Read_Operat: initialized ($ dest_dir. $ new_file_name );


$ Phpexcel_csv_arr_table = Excel_Read_Operat: GetArrTable_CVS ();


If (! Empty ($ phpexcel_csv_arr_table )){
$ Keys = array ('code', 'name', 'Category _ id', 'status', 'Description', 'decimal', 'custprice', 'length ', 'height', 'width', 'status ');
$ Final = array ();

Foreach ($ phpexcel_csv_arr_table as $ row_csv_value ){

$ Final [] = array_combine ($ keys, $ value );

Foreach ($ final as $ csv_pr ){
If ($ this-> products_model-> getProductByCode ($ csv_pr ['code']) {
$ This-> session-> set_flashdata ('message', $ this-> lang-> line ("check_product_code "). "(". $ csv_pr ['code']. "). ". $ this-> lang-> line ("code_already_exist "));
Redirect ("module = products & view = upload_csv", 'refresh ');
}

}

}

Under libraries/, there are Excel_Read_Operat.php files and Excel folders. the folders are PHPExcel. php and PHPExcel. The Excel_Read_Operat.php class is as follows:

If (! Defined ('basepath') exit ('no direct script access allowed ');