PHP 4.0 Bug #4751 Updated: fopen within if is not executed

ID: 4751 Updated by: hholzgra Reported By: s.frings@edvfrings.de Status: Closed Bug Type: Misbehaving function Assigned To: Comments: mixing assignments (or any other operation that is not free of side-effects) with logical operators is generally not a good idea as php (similar to C and others) uses an optimization technique called "lazy evaluation" so if you have an expression like expr_a && expr_b and expr_a evaluates to false, then expr_b is never evaluated as the overall result of the '&&' would be false anyway similar in expr_a || expr_b expr_b will not be evaluated if expr_a is true try for example: <? $a="initial"; $b="initial"; (($a=1)||($b=1)); print "a:$a b:$b\n"; ?> so beware! Full Bug description available at: http://bugs.php.net/version4/?id=4751