PHP语句

October 24, 2020 966

PHP条件语句

if语句

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<?php 
$t=date("H");
if ($t<"20")
{
	echo "Have a nice day!";
}
?>

if…else 语句

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<?php 
$t=date("H");
if ($t<"20")
{
    echo "Have a good day!";
}
else
{
	echo "Have a good night!";
}
?>

if…elseif…else 语句

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<?php 
$t=date("H");
if ($t<"10")
{
	echo "Have a good morning!";
}
elseif ($t<"20")
{
    echo "Have a good day!";
}
else
{
	echo "Have a good night!";
}
?>

PHP Switch语句

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<?php 
$favcolor="red";
switch ($favcolor)
{
case "red":
	echo "你喜欢的颜色是红色！";
	break;
case "blue":
	echo "你喜欢的颜色是蓝色！";
	break;
case "green":
	echo "你喜欢的颜色是绿色！";
	break;
default:
	echo "你喜欢的颜色不是这三个！";
}
?> 

  #输出结果：
#你喜欢的颜色是红色！