note 102135 deleted from function.filesize by aharvey

Note Submitter: arne_elster at web dot de ---- Function that determines a file's size only with PHP functions, for all files, also those > 4 GB: <?php function fsize($file) { // filesize will only return the lower 32 bits of // the file's size! Make it unsigned. $fmod = filesize($file); if ($fmod < 0) $fmod += 2.0 * (PHP_INT_MAX + 1); // find the upper 32 bits $i = 0; $myfile = fopen($file, "r"); // feof has undefined behaviour for big files. // after we hit the eof with fseek, // fread may not be able to detect the eof, // but it also can't read bytes, so use it as an // indicator. while (strlen(fread($myfile, 1)) === 1) { fseek($myfile, PHP_INT_MAX, SEEK_CUR); $i++; } fclose($myfile); // $i is a multiplier for PHP_INT_MAX byte blocks. // return to the last multiple of 4, as filesize has modulo of 4 GB (lower 32 bits) if ($i % 2 == 1) $i--; // add the lower 32 bit to our PHP_INT_MAX multiplier return ((float)($i) * (PHP_INT_MAX + 1)) + $fmod; } ?>