我是一名Java人，并开始使用PHP。这是我关于PHP的第一个问题。
播放表格。我没有让它发挥作用。表单只是没有验证和默默提交。可能是我的错误？
错误消息未打印出来。
<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>
我的最爱.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 $comment;
echo "</h3>";
?>
</div>
</div>
</body>
答案 0 :(得分：2)
您要将表单数据发布到favorites.php
<form method="post" action="favorites.php"> ... </form>
将其更改为：
<form method="post" action="index.php"> ... </form>
或将表单验证移至favorites.php
如果您想再次显示表单，我建议您将负责表单HTML的代码单独移动到文件中（即form.php），然后您可以在两者中执行以下操作index.php和favorites.php：
include 'form.php'
请注意，当您在另一个文件中包含PHP文件时，变量是共享的，这意味着您可以使用/覆盖变量。
（您也可以对网站的页眉和页脚进行包含）
编辑（回答评论）
更新test_data()：
function test_input($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
}
您可以像这样使用它：
$season = test_input("season");
从POST或GET获取数据的个人喜爱：
$season = filter_input(INPUT_POST, 'season', FILTER_SANITIZE_SPECIAL_CHARS);