Convert php array to csv string

Question

I have several method to transform php array to csv string both from stackoverflow and google. But I am in trouble that if I want to store mobile number such as 01727499452,

Answer 1

Are you sure the numbers are actually being saved without the leading zero? Have you looked at the actual CSV output in a text editor?

If you've just opened up the CSV file in a spreadsheet application, it is most likely the spreadsheet that is interpreting your telephone numbers as numeric values and dropping the zeros when displaying them. You can usually fix that in the spreadsheet by changing the formatting options on that particular column.