Hello, all! I've encountered odd behavior of PHP regarding bitwise AND operation when dealing with 31-st bit, and kindly ask to give me some pointers. Consider the following snippet: $tst1 = (1 << 31); $tst2 = 0x80000000; $tst1_eq = $tst1 & 0x80000000; $tst2_eq = $tst2 & 0x80000000; print "tst1=$tst1, tst1_eq=$tst1_eq, tst1_type=".gettype($tst1)."\n"; print "tst2=$tst2, tst2_eq=$tst2_eq, tst2_type=".gettype($tst2)."\n"; The output is: tst1=-2147483648, tst1_eq=0, tst1_type=integer tst2=2147483647, tst2_eq=2147483647, tst2_type=integer And I totally can not understand, why in the hell tst1_eq=0 ? (BTW I'm using PHP 5.2.14 on 32-bit CPU, if that matters) Sorry if this is well-known feature and have discussed before. In such a case please point me to the URL of the discussion. -- Vitalii Demianets -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
