I am quit new in using phpExcel
but I did not find directly the answer to my question in the manuals
For GS1 I need to create an excel document (excel5)
There are some fields that only contains numbers but I want to convert them into characters
ex 056 should also appear in the excel as 056 however when I open the excel after the program has run the value becomes 56 and this causes problems when I upload my file with GS1.
this is the line that I am using in my code