我正在开发一个用 php 编写的简单联系表单,几乎所有设置都符合我的要求,除了现在,所有验证错误都显示在我表单顶部的 div 中,我希望更改下面的代码,以便它们显示在导致错误的表单字段旁边,但我不确定如何完成此操作,所以我向专家寻求一些建议。
PHP 验证例程
$frm_valid = new Validate();
if(isset($_POST['submit'])){
$rules=array(
array('Type'=>'Required','Var'=>$_POST['name'],'Msg'=>'Name field is required.'),
array('Type'=>'Required','Var'=>$_POST['email'],'Msg'=>'Email address field is required.'),
array('Type'=>'Email','Var'=>$_POST['email'],'Msg'=>'Your email address format is invalid.'),
array('Type'=>'Required','Var'=>$_POST['subject'],'Msg'=>'Subject field is required.'),
array('Type'=>'Required','Var'=>$_POST['message'],'Msg'=>'Message field is required.'),
);
$result = $frm_valid->Valid($rules);
if(is_array($result)){
// Print validation errors (if any)
echo('<div"><b>The form cannot be submitted until the following errors are corrected.</b><ul>');
foreach($result as $key=>$val){
echo '<li>'.$val.'</li>';
}
echo('</ul></div><br />');
}
else {
// Do something else.
}
}
表单 HTML
<form action="<? echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
<input type="text" name="name" value="" /> <br />
<input type="text" name="email" value="" /> <br />
<input type="text" name="subject" value="" /> <br />
<textarea name="message" cols="80" rows="7"></textarea> <br />
<input type="submit" name="submit" value="Send" />
</form>
最佳答案
您需要为此更改整个代码!!!结构,也许是这样的:
<form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>">
<ul>
<li>
<label>
<span>Name</span>
<input type="text" name="name" />
<small class="errorText"><?php echo ($_POST["name"] == "") ? "This field is required" : ""; ?></small>
</label>
</li>
<li>
<label>
<span>Email</span>
<input type="text" name="email" />
<small class="errorText"><?php echo ($_POST["email"] == "") ? "This field is required" : ""; ?></small>
</label>
</li>
<li>
<label>
<span>Subject</span>
<input type="text" name="subject" />
<small class="errorText"><?php echo ($_POST["subject"] == "") ? "This field is required" : ""; ?></small>
</label>
</li>
<li>
<label>
<span>Message</span>
<textarea name="message" cols="80" rows="7"></textarea>
<small class="errorText"><?php echo ($_POST["message"] == "") ? "This field is required" : ""; ?></small>
</label>
</li>
<li>
<input type="submit" name="submit" value="Send" />
</li>
</ul>
</form>
同样的 CSS:
* {font-family: Segoe UI, Tahoma;}
h1 {font-weight: bold; font-size: 14pt; padding: 5px 0; margin: 5px 0; border: 1px solid #999; border-width: 1px 0;}
input[type='submit'] {padding: 5px 20px; cursor: pointer;}
ul, li {display: block; list-style: none; margin: 0; padding: 0;}
ul li {padding: 5px 0;}
ul li label span {display: block; cursor: pointer;}
ul li label .errorText {color: #f00; font-weight: bold; vertical-align: top;}
ul li label textarea {width: 300px;}
您可以在此处观看现场演示:Demo
PHP 中的错误处理
为每个字段保留一个错误变量。说,
<?php
$error = array(
"name" => "",
"email" => "",
"subject" => "",
"message" => ""
);
?>
用错误更新它们并在下面显示它们。
<?php
if (empty()$_POST["email"])
$error["email"] = "Email is required!";
elseif (!isEmail($_POST["email"]))
$error["email"] = "Not a Valid Email!";
?>
如果没有错误,它将是空的,用户不会看到错误消息。在您的表单代码中,您只需要这样更新:
<small class="errorText"><?php echo $error["name"]; ?></small>
<small class="errorText"><?php echo $error["email"]; ?></small>
在后端,$error["email"]
会显示 “此字段为必填项”
或 “不是有效的电子邮件地址! "
.
关于php - 在每个字段旁边显示表单验证错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11237655/