比较PHP中的URL字符串

我试图使用GET url中的查询来确定页面的内容。 这就是我所拥有的（为了清晰起见，对句子进行了编辑）：

---

有比
$SERVER['query\u string']
更好的解析查询字符串的方法，具体来说，您可以使用
$\u GET
访问特定参数。示例：www.Example.com？name=Dave&age=30。。。
要获取名称，您可以执行
$\u get['name']
，它将返回
Dave
。我认为更好的方法是：

$selection = $_GET['selection'];
if (empty($selection)) {
    header('start.html') ;
}

else {
     $vars = array(
          'republic'=>array('title'=>'Private', 'welcome'=> 'Our .', 'declaration'=>'', 'signoff' => 'The Replublic will strike back'),
          'rebels'=>array('title'=>'Comrade', 'welcome' => "Hey comrade, welcome to the Underground Network!", 'declaration'=>"You see,o's!",'signoff' => "Rebel!!"),
          'robots'=>array('title'=>'Bit', 'welcome'=>'Our data', 'declaration'=>'Knowlegge W', 'signoff'=>'Ed now')
      );

      list($title, $welcome, $declaration, $signoff) = $vars[$selection];
}

这来自比较值和类型的三元号
=
。你应该看看

我建议您只使用两个equals，顺便说一句，您可以使用$\u GET['selection']变量来简化代码：

<?php 
//decalre variables
$title ='';
$welcome = '';
$params = '';

$params = $_SERVER['QUERY_STRING'];
echo $_SERVER['QUERY_STRING'];
echo $params;

if (!isset($_GET['selection']) { // Check whether selection is set 
    header('start.html') ;
} else {
    if ($_GET['selection'] == "republic") {
        //echo $params;
        //echo 'Republic';
        $title = "Private";
        $welcome = "Our .";
        $signoff = "The Republic will strike back!";
    } 
    else if ($_GET['selection'] == "rebels")    {
        //echo $params;
        //echo 'Rebels';
        $title = "Comrade";
        $welcome = "Hey comrade, welcome to the Underground Network!";
        $declaration="You see,o's!";
        $signoff = "Rebel!!";
    } 
    else if ($_GET['selection'] == "robots"){
        //echo $params;
        //echo 'Robots';
        $title = "Bit";
        $welcome = "Our data ";
        $declaration="Knowledge w.";
        $signoff = "ed now.";
    }
    else {
        echo 'There was an error - please go back.';
    }
}

我相信第一个
if（$params=''）
应该是
==
。为什么不使用
$\u GET['selection']
？另外，使用if（空（$variable））而不是if（$variable=''）要好得多。。。empty检测是否没有值或空格（0太多了，所以要小心整数），谢谢大家-“==”修复了它，并使用了is simplerand
$SERVER['QUERY\u STRING']
？
<?php 
//decalre variables
$title ='';
$welcome = '';
$params = '';

$params = $_SERVER['QUERY_STRING'];
echo $_SERVER['QUERY_STRING'];
echo $params;

if (!isset($_GET['selection']) { // Check whether selection is set 
    header('start.html') ;
} else {
    if ($_GET['selection'] == "republic") {
        //echo $params;
        //echo 'Republic';
        $title = "Private";
        $welcome = "Our .";
        $signoff = "The Republic will strike back!";
    } 
    else if ($_GET['selection'] == "rebels")    {
        //echo $params;
        //echo 'Rebels';
        $title = "Comrade";
        $welcome = "Hey comrade, welcome to the Underground Network!";
        $declaration="You see,o's!";
        $signoff = "Rebel!!";
    } 
    else if ($_GET['selection'] == "robots"){
        //echo $params;
        //echo 'Robots';
        $title = "Bit";
        $welcome = "Our data ";
        $declaration="Knowledge w.";
        $signoff = "ed now.";
    }
    else {
        echo 'There was an error - please go back.';
    }
}