ユーザー入力をフォームに保存しようとしていますが、これは正常に機能しますが、入力がなくて [送信] ボタンを押すと、次のエラーが発生します。
Notice: Undefined variable: name in C:\xampp\htdocs\syncfolder\phpsols\contact_01.php on line 54 value="">
私が使用しているコードは、書籍「PHP ソリューション」からのものです。
<?php
$errors = array();
$missing = array();
//check if the form has been submitted
if (isset($_POST['send'])){
//email processing script
$to = 'sampleemail1@gmail.com';
$subject = 'Mailing script';
//list of expected fields
$expected = array('name', 'email','comments');
//set required fields
$required = array('name','email', 'comments');
require('processmail.inc.php');
}
?>
<!DOCTYPE HTML>
<html>
<head>
<meta charset=utf-8">
<title>Japan Journey</title>
<link href="styles/journey.css" rel="stylesheet" type="text/css" media="screen">
</head>
<body>
<div id="header">
<h1>Japan Journey</h1>
</div>
<div id="wrapper">
<div id="maincontent">
<h2>Contact Us </h2>
<?php if ($missing || $errors) { ?>
<p class="warning">Please fix the item(s) indicated.</p>
<?php } ?>
<p>Ut enim ad minim veniam, quis nostrud exercitation consectetur adipisicing elit. Velit esse cillum dolore ullamco laboris nisi in reprehenderit in voluptate. Mollit anim id est laborum. Sunt in culpa duis aute irure dolor excepteur sint occaecat.</p>
<form id="feedback" method="post" action="">
<p>
<label for="name">Name:
<?php if ($missing && in_array('name', $missing)) { ?>
<span class="warning">Please enter your name</span>
<?php } ?>
</label>
<input name="name" id="name" type="text" class="formbox"
<?php if ($missing || $errors) {
echo 'value="' . htmlentities($name, ENT_COMPAT, 'UTF-8') . '"';
} ?>>
</p>
<p>
<label for="email">Email:
<?php if ($missing && in_array('email', $missing)) { ?>
<span class="warning">Please enter your email address</span>
<?php } ?>
</label>
<input name="email" id="email" type="text" class="formbox"
<?php if ($missing || $errors) {
echo 'value="' . htmlentities($email, ENT_COMPAT, 'UTF-8') . '"';
} ?>>
</p>
<p>
<label for="comments">Comments:
<?php if ($missing && in_array('comments', $missing)) { ?>
<span class="warning">Please enter your comments</span>
<?php } ?>
</label>
<textarea name="comments" id="comments" cols="60" rows="8">
<?php
if ($missing || $errors) {
echo htmlentities($comments, ENT_COMPAT, 'UTF-8');
} ?>
</textarea>
</p>
<p>
<input name="send" id="send" type="submit" value="Send message">
</p>
</form>
</div>
</div>
</body>
</html>
そしてインクルードファイル：
<?php
foreach ($_POST as $key => $value) {
// assign to temporary variable and strip whitespace if not an array
$temp = is_array($value) ? $value : trim($value);
// if empty and required, add to $missing array
if (empty($temp) && in_array($key, $required)) {
$missing[] = $key;
} elseif (in_array($key, $expected)) {
// otherwise, assign to a variable of the same name as $key
${$key} = $temp;
}
}
?>
htmlエンティティを除くすべてのスクリプトは正常に機能します。