Question

I need to iterate over a text file 64 bytes by 64 bytes. I want the next 64 bytes starts just one character after the previous start position! fread($handle,64) starts the next bytes from the end of previous bytes.

sth like this:

text file contains:

abcdefghi

get every 3 bytes:

abc
bcd
cde
...

Answer 1

use fseek() to reset the file position indicator before using fread(). something like this:

for($i=0; $i <= ($filelength-64), $i++){
  fseek($handle, $i);
  $data = fread($handle, 64);
  // process data...
}