Allowed memory size of 134217728 bytes exhausted (tried to allocate 6 bytes)

[chadwalt]

I keep on getting this error when am trying to write to excel with large data.

How can we solve this?

[vernes]

How much data are you trying to export?
Unfortunately, PHPExcel is not very memory efficient and requires about 1k/cell for internal spreadsheet representation
http://stackoverflow.com/a/4817729
http://stackoverflow.com/questions/9729877/phpexcel-write-append-in-chunks