" ;
echo " a > b gives " . ( $a > $b ) . "
" ;
echo " a >= b gives " . ( $a >= $b ) . "
" ;
echo " a < b gives " . ( $a < $b ) . "
" ;
echo " a <= b gives " . ( $a <= $b ) . "
" ;
echo " a == b gives " . ( $a == $b ) . "
" ;
echo " a != b gives " . ( $a != $b ) . "
" ;
echo "
" ;
echo "logical and
" ;
echo "true and true gives " . ( true and true ) . "
" ;
echo "true and false gives " . ( true and false ) . "
" ;
echo "false and true gives " . ( false and true ) . "
" ;
echo "false and false gives " . ( false and false ) . "
" ;
echo "
" ;
echo "logical or
" ;
echo "true or true gives " . ( true or true ) . "
" ;
echo "true or false gives " . ( true or false ) . "
" ;
echo "false or true gives " . ( false or true ) . "
" ;
echo "false or false gives " . ( false or false ) . "
" ;
echo "
" ;
echo "logical xor
" ;
echo "true xor true gives " . ( true xor true ) . "
" ;
echo "true xor false gives " . ( true xor false ) . "
" ;
echo "false xor true gives " . ( false xor true ) . "
" ;
echo "false xor false gives " . ( false xor false ) . "
" ;
echo "
" ;
echo "logical !
" ;
echo "! true gives " . ( ! true ) . "
" ;
echo "! false gives " . ( ! false ) . "
" ;
echo "
" ;
echo "Examples combining comparison and logic:
" ;
echo "3>2 and 4>3 gives " . ( ( 3 > 2 ) and ( 4 > 3 ) ) . "
" ;
echo "2>3 and 4>3 gives " . ( ( 2 > 3 ) and ( 4 > 3 ) ) . "
" ;
echo "4>5 or 6<7 gives " . ( ( 4 > 5 ) or ( 6 < 7 ) ) . "
" ;
echo "4>5 or 7<6 gives " . ( ( 4 > 5 ) or ( 7 < 6 ) ) . "
" ;
?>