我正在读一本书,并通过示例,不幸的是,如果我在提交表单时将字段留空,我将不断收到错误。我查了勘误,没有任何东西,我尝试在论坛上发帖,但没有得到任何答复。菜鸟PHP,收到一个未定义的变量错误
我相信也许我必须首先声明变量,但这会从变量自动生成中消失。
任何帮助将不胜感激,我是一个试图学习PHP的新手。
每个请求,这里是$ required和$ expected。谢谢!
$expected = array('name', 'email', 'comments');
$required = array('name', 'email', 'comments');
<?php
foreach ($_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;
}
}
<?php
include('./includes/title.inc.php');
$errors = array();
$missing = array();
//Check to see if the form has been submitted
if (isset($_POST['send'])){
//email processing script
$to = '[email protected]'; //use your email address
$subject = 'Feedback from Japan Journey';
//list expecting fields
$expected = array('name', 'email', 'comments');
//set required fields
$required = array('name', 'email', 'comments');
include('./includes/processmail.inc.php');
}
?>
<!DOCTYPE HTML>
<html>
<head>
<meta charset=utf-8">
<title>Japan Journey<?php if (isset($title)){echo "—{$title}";} ?></title>
<link href="styles/journey.css" rel="stylesheet" type="text/css" media="screen">
</head>
<body>
<div id="header">
<h1>Japan Journey</h1>
</div>
<div id="wrapper">
<?php include('./includes/menu.inc.php'); ?>
<div id="maincontent">
<h2>Contact Us</h2>
<?php if ($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>
<pre>
<?php if ($_POST && $missing) {print_r($_POST);} ?>
</pre>
</div>
<?php include('./includes/footer.inc.php'); ?>
</div>
</body>
</html>
哪一行是第60行? – BoltClock 2011-01-25 19:09:35
`$ required`和`$ expected`从哪里来? – Tomalak 2011-01-25 19:11:01
确切的错误信息也会有帮助。 – 2011-01-25 19:11:48