PHP验证 - 表单无法验证

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我是一名Java人员，并开始使用PHP。这是我在PHP上的第一个问题。PHP验证 - 表单无法验证

用形式玩耍。我没有让它工作。表单只是未经验证并默默提交。可能是我的错误？

错误消息未打印。

<html> 
    <head> 
     <title></title> 
     <link href="css/program-07.css" rel="stylesheet" type="text/css"/> 
      <div id="requirements" style="margin: 0 auto; text-align:justify; width:850px;"> 
       <h1></h1> 
     </head> 
     <body> 
      <nav class="sidenav"> 
       <header class="w3-container"> 
       <h3>Navigation</h3> 
       </header> 
        <a href="http://lineofcode.com/itse2302-002/itse2302-002-007/">Home</a>  
        <a href="index.php">Program07</a> 
        <a target="_blank" href="selfprocessor.php">Self Processor</a> 
        <a target="_blank" href="validatecontrols.php">Validate Controls</a> 
      </nav> 

      <div id="main" style="margin-left:25%"> 

      <?php 
       echo "<h2>Requirement 01 - Datalists + Navigation</h2>"; 
       echo "<h3>To the left are navigation links to the files in this program, and below (not visible) datalists of the days of the week and months of the year that will be used in requirement 2.";   ?> 


        <datalist id="daysweek"> 
         <option value="Monday"> 
         <option value="Tuesday"> 
         <option value="Wednesday"> 
         <option value="Thursday"> 
         <option value="Friday"> 
         <option value="Saturday"> 
         <option value="Sunday"> 
        </datalist> 

        <datalist id="monthsyear"> 
         <option value="January"> 
         <option value="February"> 
         <option value="March"> 
         <option value="April"> 
         <option value="May"> 
         <option value="June"> 
         <option value="July"> 
         <option value="August"> 
         <option value="September"> 
         <option value="October"> 
         <option value="November"> 
         <option value="December"> 
        </datalist> 

      <?php   
       echo "<hr>"; 

       echo "<h2>Requirement 02 - Datalists</h2>"; 
       echo "<h3>The two datalists from above are now incorporated into a form that the user can see and interact with.</h3>"; 
       echo "Input a day of the week and a month of the year."; 
      ?> 
        <form action="daymonth.php" method="get"> 
         <input list="daysweek" name="days"> 
         <datalist id="day"> 
          <option value="Monday"> 
          <option value="Tuesday"> 
          <option value="Wednesday"> 
          <option value="Thursday"> 
          <option value="Friday"> 
          <option value="Saturday"> 
          <option value="Sunday"> 
         </datalist> 

         <input list="monthsyear" name="months"> 
          <datalist id="month"> 
           <option value="January"> 
           <option value="February"> 
           <option value="March"> 
           <option value="April"> 
           <option value="May"> 
           <option value="June"> 
           <option value="July"> 
           <option value="August"> 
           <option value="September"> 
           <option value="October"> 
           <option value="November"> 
           <option value="December"> 
           </datalist> 
         <input type="submit"> 
        </form> 

      <?php     
       echo "<hr>"; 

       echo "<h2>Requirement 03 - Form Processor</h2>"; 
       echo "<h3>A form processor file named daymonth was created for the form data in requirement 2. A function called test_input checks the data for safety.</h3>"; 

       echo "<hr>"; 

       echo "<h2>Requirement 04 - Favorites Form</h2>"; 
       echo "<h3>This form includes required fields.</h3>"; 

       $nameErr = $movieErr = $foodErr = $seasonErr = ""; 
       $name = $movie = $food = $season = $comment = ""; 

       if ($_SERVER["REQUEST_METHOD"] == "POST") { 
        if (empty($_POST["name"])) { 
        $nameErr = "Please tell us your name!"; 
        } else { 
        $name = test_input($_POST["name"]); 
        } 

        if (empty($_POST["movie"])) { 
        $movieErr = "Please tell us your favorite movie!"; 
        } else { 
        $email = test_input($_POST["movie"]); 
        } 

        if (empty($_POST["food"])) { 
        $foodErr = "Please tell us your favorite food!"; 
        } else { 
        $website = test_input($_POST["food"]); 
        } 

        if (empty($_POST["season"])) { 
        $seasonErr = "Please tell us your favorite season!"; 
        } else { 
        $gender = test_input($_POST["season"]); 
        } 

        if (empty($_POST["comment"])) { 
        $comment = ""; 
        } else { 
        $comment = test_input($_POST["comment"]); 
        } 
       } 

      ?> 
       <p><span class="error">* required field.</span></p> 
       <form method="post" action="favorites.php"> 
        Name: <input type="text" name="name"> 
        <span class="error">* <?php echo $nameErr;?></span> 
        <br><br> 
        Favorite Movie: <input type="text" name="movie"> 
        <span class="error">* <?php echo $movieErr;?></span> 
        <br><br> 
        Favorite Food: <input type="text" name="food"> 
        <span class="error">* <?php echo $foodErr;?></span> 
        <br><br> 
        Favorite Season: 
        <input type="radio" name="season" value="Spring">Spring 
        <input type="radio" name="season" value="Summer">Summer 
        <input type="radio" name="season" value="Fall">Fall 
        <input type="radio" name="season" value="Winter">Winter 
        <span class="error">* <?php echo $seasonErr;?></span> 
        <br><br> 
        Comments:<br /> 
        <textarea name="comment" rows="5" cols="40"></textarea> 
        <br><br> 
        <input type="submit" name="submit" value="Submit"> 
       </form> 

       <?php  
       echo "<hr>"; 

       echo "<h2>Requirement 05 - </h2>"; 
       echo "<h3></h3>"; 


       echo "<hr>"; 

       echo "<h2>Requirement 06 - </h2>"; 
       echo "<h3></h3>"; 


       echo "<hr>"; 

       echo "<h2>Requirement 07 - </h2>"; 
        echo "<h3></h3>"; 


       echo "<hr>"; 

       echo "<h2>Requirement 08 - </h2>"; 
       echo "<h3></h3>"; 

       echo "<hr>"; 

       echo "<h2>Requirement 09 - </h2>"; 
       echo "<h3></h3>"; 


       echo "<hr>"; 


      ?> 
       </div> 
      </div> 
     </body> 
</html>

而且我favorites.php

<head> 
    <title>Program 07 - Nicola Stewart</title> 
    <link href="css/program-07.css" rel="stylesheet" type="text/css"/> 
     <div id="daymonth" style="margin: 0 auto; text-align:justify; width:850px;"> 
</head> 

<body> 
    <nav class="sidenav" style="width:25%"> 
     <header class="w3-container"> 
     <h3>Navigation</h3> 
     </header> 
     <a href="http://lineofcode.com/itse2302-002/itse2302-002-007/">Home</a>  
     <a href="index.php">Program07</a>   
    </nav> 

    <div id="main" style="margin-left:25%"> 

     <h2>Requirement 04 - Favorites Form</h2> 

     <header class="container"> 
     <h1>Welcome!</h1> 
     </header> 
     <div class="container"> 

     <?php 
      $name = $movie = $food = $season = $comment = ""; 

      if ($_SERVER["REQUEST_METHOD"] == "POST") { 
       $name = test_input($_POST["name"]); 
       $movie = test_input($_POST["movie"]); 
       $food = test_input($_POST["food"]); 
       $season = test_input($_POST["season"]); 
       $comment = test_input($_POST["comment"]); 

      } 

      function test_input($data) { 
       $data = trim($data); 
       $data = stripslashes($data); 
       $data = htmlspecialchars($data); 
       return $data; 
      } 

      echo "<h2>You selected:</h2>"; 
      echo "<h3>"; 
      echo "<br>"; 
      echo $name; 
      echo "<br>"; 
      echo $movie; 
      echo "<br>"; 
      echo $food; 
      echo "<br>"; 
      echo $season; 
      echo "<br>"; 
      echo $comment; 
      echo "</h3>"; 
     ?> 

     </div> 
    </div> 

</body>

来源

2015-10-19 ꜱᴜʀᴇꜱʜ ᴀᴛᴛᴀ

这是对'favorites.php'的代码？ – grim

@grim这是我的index.php。给那个faviourates.php。 –

我已经对我的答案做了一些更新。 – grim

您可以发布您的表单数据favorites.php

<form method="post" action="favorites.php"> ... </form>

将其更改为：

<form method="post" action="index.php"> ... </form>

或移动您的表单验证到favorites.php

如果您想再次显示表单，我建议您将负责表单HTML的代码自行移动到文件中（即， form.php），然后你可以做两个index.php和favorites.php如下：

include 'form.php'

注意，当您在另一个PHP文件，该变量是共享的，这意味着你可以使用/覆盖变量。

（你也可以做包括页眉和网站的页脚）

编辑（回答评论） 更新test_data()：

function test_input($index) { 
    if (isset($_POST[$index])) { // make sure that the index exists in $_POST 
    $data = $_POST[$index]; 
    $data = trim($data); 
    $data = stripslashes($data); 
    $data = htmlspecialchars($data); 
    return $data; 
    } 
    return null; // or any default value 
}

您可以使用它像这样：

$season = test_input("season");

个人喜欢获取数据fr OM A POST或GET：

filter_input()

$season = filter_input(INPUT_POST, 'season', FILTER_SANITIZE_SPECIAL_CHARS);

来源

2015-10-19 02:19:42 grim

由于某种原因，严重的，现在面临一个问题当我点击提交，现在在favorites.php上的错误是'注意：未定义的索引：季节在C：\ wamp \ www \ program-07 \ favorites.php在65行“ '这一行是'$ season = test_input（$ _ POST [“season”]）;' –

在这些变化之后http://pastebin.com/qvffdgY4 –

@sᴜʀᴇsʜᴀᴛᴛᴀ你有一个'input'标签，它的属性名称=“season”'？如果不是，将它添加到你的表单中，你也可以使用[isset]（http://php.net/manual/en/function.isset.php）来确保你的'$ _POST'有一个特定的索引（即'if（isset（$ _ POST ['season']'） – grim

PHP验证 - 表单无法验证

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