Bug #12566: Cascaded ternaries evaluate incorrectly

From: nick@macaw.demon.co.uk Operating system: Linux PHP version: 4.0.6 PHP Bug Type: *Programming Data Structures Bug description: Cascaded ternaries evaluate incorrectly The following emits 'two' rather than 'one' as one would expect. $a = 1; $b = 2; echo (($a == 1) ? 'one' : ($b == 2) ? 'two' : 'unknown'); Apologies if for PHP this unusual behaviour actually is as expected, but being counter-intuituve, and of course inconsistent from other languages with a ?: operator, this is an undesirable result. In 'C', the following of course outputs 'one' #include <stdio.h> int main() { int a = 1, b = 2; puts((a == 1) ? "one" : (b == 2) ? "two" : "unknown"); return 0; } -- Edit bug report at: http://bugs.php.net/?id=12566&edit=1