PHP4实际应用经验篇(4)
除了"if"语句,php还提供了"if-else"结构,用来定义当语句中的条件描述为"false”值时所执行的PHP代码。
"if-else" 结构使用方法如下:
--------------------------------------------------------------------------------
if (condition)
{
do this!
}
else
{
do this!
}
--------------------------------------------------------------------------------
你将看到,这种结构可以用来对上一篇那个例子进行大大简化-替代两个分开的 "if" 语句嵌套,我们可以把他们混合在一个单一的"if-else" 语句中:
--------------------------------------------------------------------------------
// 检查名字并反馈相应的信息
if ($name == "neo")
{
?>
欢迎进入母体,Neo。
也许是武力强迫你才这样做的,,,哦,不正当的影片!
}
else
{
?>
我想知道你是否听说过莎士比亚, .
他要求得到一束另一个名字的玫瑰化,因为那束闻起来可能会更芳香一些。
对于你,很不幸,我不同意。拒绝进入!
}
?>

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