ID: 40749 Updated by: [EMAIL PROTECTED] Reported By: ben at ateor dot com -Status: Open +Status: Closed Bug Type: Unknown/Other Function Operating System: OpenBSD amd64 and sparc64 PHP Version: 5.2.1 Assigned To: iliaa
Previous Comments: ------------------------------------------------------------------------ [2007-04-05 13:49:39] ben at ateor dot com Fix the problem for me, thanks. (ps: meanwhile, I can't verify there's no regressions, given how the testsuite has changed). ------------------------------------------------------------------------ [2007-04-03 22:00:45] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.2-win32-latest.zip ------------------------------------------------------------------------ [2007-03-16 14:03:01] martin at netimage dot dk It appears that the sign bit is taken from LSB instead of MSB > php -r 'print_r( unpack('N',pack('N',127)));' Array ( [1] => 127 ) > php -r 'print_r( unpack('N',pack('N',128)));' Array ( [1] => -2147483520 ) The last number is 2's complement of -128 for 32 bit integers Cheers ------------------------------------------------------------------------ [2007-03-14 20:57:41] pz at mysqlperformanceblog dot com In any case if you call it bug or a feature this is serious behavior change for something which a lot of people could be depending on. It breaks in MySQL 5.2.0 -> 5.2.1 which is minor version upgrade. ------------------------------------------------------------------------ [2007-03-09 09:06:47] windeler at mediafinanz dot de Here is another example of a problem with unpack on 64bit systems. It worked in 5.1.6, but with 5.2.1 the results are bogus. The expected value from the file content is 200, but PHP says -2147483448 when I echo $a['i']. <?php $f = fopen('test.pdf','rb'); //Read a 4-byte integer from file $a = unpack('Ni',fread($f,4)); echo $a['i']; fclose($f); ?> ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/40749 -- Edit this bug report at http://bugs.php.net/?id=40749&edit=1
