Question

I want to write a raw byte/byte stream to a position in a file. This is what I have currently:

$fpr = fopen($out, 'r+'); fseek($fpr, 1); //seek to second byte fwrite($fpr, 0x63);  fclose($fpr); 

This currently writes the actually string value of ’99’ starting at byte offset 1. IE, it writes bytes ‘9’ and ‘9’. I just want to write the actual one byte value 0x63 which happens to represent number 99.

Thanks for your time.

Answer 1

fwrite() takes strings. Try chr(0x63) if you want to write a 0x63 byte to the file.