Replace the header of csv without loading the whole csv in memory in PHP

Question

I have a CSV of size 5GB and more. I need to replace the header of the CSV with one different header string. I am looking for a memory-efficient solution in PHP where I won't need to read the whole CSV in memory just to replace the header.

Does this answer your question? [Replacing a line in a file without rewriting the entire file (in PHP)](https://stackoverflow.com/questions/10030804/replacing-a-line-in-a-file-without-rewriting-the-entire-file-in-php) — CBroe, Mar 10 '22 at 08:04

score 1 · Accepted Answer · answered Mar 10 '22 at 11:59

1

Honestly I would use some combination of head&tail&echo in bash running in symfony/process. That's usually safest and most memory efficient.

answered Mar 10 '22 at 11:59

Tomáš Fejfar

11,129
8
54
82

Replace the header of csv without loading the whole csv in memory in PHP

1 Answers1