Bug #14942 Updated: Logical bitwise operator not functioning correctly

ID: 14942 Updated by: mfischer Reported By: mchiba@cisco.com Old Status: Open Status: Closed Bug Type: Variables related Operating System: Linux Redhat 7.2 PHP Version: 4.0.6 New Comment: This is fixed in > 4.0.6. Previous Comments: ------------------------------------------------------------------------ [2002-01-08 22:21:02] mchiba@cisco.com I have two variables that I am trying to logically 'AND' in a bitwise fashion. This does not work correctly if one of the variables is initialized to 0xffffffff. ie if $field and $flags are two variables: $flags = 0xffffffff; $field = 0x01; ($flags & $field)? $str = "TRUE" : $str = "FALSE"; echo "$str <br>"; This prints 'FALSE' instead of 'True'!! I tried debugging it with different values and it seems that if the highest bit is set then the it does the wrong thing. ie. if $flags is instead initialized to 0x7fffffff then everything works fine! Here is phpinfo on my system: Thanks, Murtaza PHP Version 4.0.6 System Linux porky.devel.redhat.com 2.4.5-7smp #1 SMP Tue Jun 26 14:19:49 EDT 2001 i686 unknown Build Date Aug 27 2001 Configure Command './configure' 'i386-redhat-linux' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/usr/com' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--prefix=/usr' '--with-config-file-path=/etc' '--disable-debug' '--enable-pic' '--disable-rpath' '--enable-inline-optimization' '--with-apxs=/usr/sbin/apxs' '--with-bz2' '--with-curl' '--with-db3' '--with-dom' '--with-exec-dir=/usr/bin' '--with-gd' '--with-gdbm' '--with-gettext' '--with-jpeg-dir=/usr' '--with-mm' '--with-openssl' '--with-png' '--with-regex=system' '--with-ttf' '--with-zlib' '--with-layout=GNU' '--enable-debugger' '--enable-ftp' '--enable-magic-quotes' '--enable-safe-mode' '--enable-sockets' '--enable-sysvsem' '--enable-sysvshm' '--enable-track-vars' '--enable-yp' '--enable-wddx' '--without-mysql' '--without-unixODBC' '--without-oracle' '--without-oci8' '--with-pspell' '--with-xml' Server API Apache Virtual Directory Support disabled Configuration File (php.ini) Path /etc/php.ini ZEND_DEBUG disabled Thread Safety disabled [Zend logo] This program makes use of the Zend scripting language engine: Zend Engine v1.0.6, Copyright (c) 1998-2001 Zend Technologies ------------------------------------------------------------------------ Edit this bug report at http://bugs.php.net/?id=14942&edit=1