1999-09-11 整数と浮動小数点数 PHP 明解C言語 入門編 > 2. 演算と型 > 整数と浮動小数点数 PHP <?php $nx = 9.99; $dx = 9.99; echo " int 型変数nxの値:", (int)$nx, "\n"; echo " nx / 2:", (int)($nx / 2), "\n"; echo "double型変数dxの値:", $dx, "\n"; echo " dx/2.0:", $dx / 2, "\n"; ?> 実行結果 L:\>php lesson_02_010.php int 型変数nxの値:9 nx / 2:4 double型変数dxの値:9.99 dx/2.0:4.995