php - Telling Apache server that my page is busy working on fpdf generation and not hung -

i use fpdf create pdf document using php. works can take long time produce finished report , if time takes on 60 seconds 500 internal server error.

i have spoken service provider , have told me setting cannot overridden programatically (such max_execution_time) , need keep server aware page still running. said way have progress bar unfamiliar fpdf.

this great additional feature solving problem, fpdf not allow output client side give error

fpdf error: data has been output, can't send pdf file

so question either,

is there way progress bar can displayed while fpdf being generated? (i have looked @ question progress bar while opening pdf using fpdf doesn't seem address 'data outputted' error)

or

if not possible there way 'talking' apache server during process of generating pdf let know page still busy working on it?