B. 处理表单
我们通过页面的第二个功能模块完成对表单输入结果的处理过程。其代码如下：
< ？php
function process_form()
{
global $name;
global $fruit;
global $times;
if ($fruit == ‘apple') { $fruit_message = ‘You love apple.'; }
elseif ($fruit == ‘orange') { $fruit_message = ‘You love orange'; }
else { $fruit_message = ‘You love banana.'; }
$favorite_times = count($times);
if ($favorite_times < = 1)
{$times_message = ‘You should eat fruit more often.';}
elseif ($favorite_times > 1 && $favorite_times < 4)
{$times_message = ‘Those are good times to eat fruit.';}
else {$times_message = ‘You are eating too much fruit.';}
echo “Hello $name.”;
echo “$fruit_message $times_message”;
}
? >
在表单处理代码中，首先我们按照上文所介绍的$PHP_SELF变量处理方式，将我们在创建表单时所建立的变量全部声明为全局变量。接着，我们查看用户具体选择了哪一个fruit选项。然后，使用count()函数得出用户选择的复选选项的个数，然后按照该结果进行相应的判断。最后，我们输出用户的姓名以及表单处理后的信息。
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