<?php$x=TRUE;$y=FALSE;$z=$y OR $x;?>Is $z...
<?php$x=TRUE;$y=FALSE;$z=$y OR $x;?>Is $z TRUE or FALSE?In this case, $z will be FALSE because the above code is equivalent to <?php ($z=$y) OR $x ?> rather than <?php $z=($y OR $x) ?> as might be expected - because the OR operator has lower precedence than assignment operators.On the other hand, after this code sequence:<?php$x=TRUE;$y=FALSE;$z=$y || $x;?>$z will be TRUE, as expected, because the || operator has higher precedence than assignment: The code is equivalent to $z=($y OR $x).This is why you should NEVER use the OR operator without explicit parentheses around the expression where it is being used.
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