Hi, i prepared an excel sheet using cakePHP frame work with 'application/vnd.ms-excel' mime type.when i am trying to open it in excel 2013 it prompt like
The file format and extension of 'filename.xls' don't match. The file could be corrupted
or unsafe.Unless you trust it source,don't open it Do you want to open it any way ?Please help me how to solve this issue