Speed Up CSV Write To Disk

When writing CSV files with fputcsv() function, PHP flushes each row to the disk. To speed up the process, it is possible to open a file in memory, with the php://memory wrapper, and write the CSV there. Then, it is possible to write down from memory down to the disk in one batch, saving a lot of disks flushes.

The same trick may be used to write any kind of files: write it quickly, in memory, and then, down to the disk in one batch.

See Also

• fputcsv

• fputcsv() in loops

• fputcsv in loops [Try me]

PHP Features

• memory

• optimisation

• csv

• file