php - `Type L: not enough input` when to unpack the target data -


i job done parse data target file in binary form of stackoverflow's friends.

<?php     $handle = fopen('data', 'rb');     fread($handle,64);     while (!feof($handle)) {         $bytes= fread($handle,32);         print_r(unpack("la/fb/fc/fd/fe/ff/fg/fh",$bytes));         echo "<br/>";         }     echo "finish";     fclose($handle); ?>

i got result ,one last bug remains here can't solve myself.
1.why unpack(): type l: not enough input, need 4, have 0 ?
2.how fix it?

enter image description here

change loop to:

while ($bytes = fread($handle, 32)) {     print_r(unpack("la/fb/fc/fd/fe/ff/fg/fh",$bytes));     echo "<br/>"; }

feof($handle) doesn't become true until after you've tried read @ end of file.

so you're performing fread(), returns false, , trying unpack empty byte string.


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