PHP，正在尝试向现有表单添加验证码
我不是一个PHP程序员，但我使用过它，足以让它成为一种联系方式。但是，我正在尝试添加一个captcha字段，该字段现在可以工作，但表单无法验证它-因此无论发生什么情况，它都会提交 有人能帮忙吗？抱歉，如果代码混乱，请提前感谢 代码在我的页面顶部PHP，正在尝试向现有表单添加验证码,php,forms,captcha,Php,Forms,Captcha,我不是一个PHP程序员，但我使用过它，足以让它成为一种联系方式。但是，我正在尝试添加一个captcha字段，该字段现在可以工作，但表单无法验证它-因此无论发生什么情况，它都会提交 有人能帮忙吗？抱歉，如果代码混乱，请提前感谢 代码在我的页面顶部 <?php session_start() ?> <?php //If the form is submitted if(isset($_POST['submit'])) {
<?php session_start() ?>
<?php
//If the form is submitted
if(isset($_POST['submit'])) {
//Check to make sure that the name field is not empty
if(trim($_POST['name']) == '') {
$hasError = true;
} else {
$name = trim($_POST['name']);
}
//Check to make sure that the subject field is not empty
if(trim($_POST['subject']) == '') {
$hasError = true;
} else {
$subject = trim($_POST['subject']);
}
//Check to make sure sure that a valid email address is submitted
if(trim($_POST['email']) == '') {
$hasError = true;
} else if (!eregi("^[A-Z0-9._%-]+@[A-Z0-9._%-]+\.[A-Z]{2,4}$", trim($_POST['email'])))
{
$hasError = true;
} else {
$email = trim($_POST['email']);
}
//Check to make sure comments were entered
if(trim($_POST['message']) == '') {
$hasError = true;
} else {
if(function_exists('stripslashes')) {
$message = stripslashes(trim($_POST['message']));
} else {
$message = trim($_POST['message']);
}
/*captcha 2*/
if(isset($_POST["captcha"])) {
$hasError = true;
} else {
if($_SESSION["captcha"]==$_POST["captcha"]) {
}
}
//CAPTHCA is valid; proceed the message: save to database, send by e-mail ...
//If there is no error, send the email
if(!isset($hasError)) {
$emailTo = 'email address'; //Put your own email address here
$emailTo = 'email address'; //Put your own email address here
$body = "Name: $name \n\nEmail: $email \n\nSubject: $subject \n\nMessage:\n $message";
$headers = 'From: website form <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' .
$email;
mail($emailTo, $subject, $body, $headers);
$emailSent = true;
}
}
?>
Code in the form:
[php]<?php if(isset($hasError)) { //If errors are found ?>
<p class="error">Please check if you've filled all the fields with valid information. Thank you.</p>
<?php } ?>
<?php if(isset($emailSent) && $emailSent == true) { //If email is sent ?>
<p><strong>Email Successfully Sent!</strong></p>
<p>Thank you <strong><?php echo $name;?></strong> for contacting us. Your email was successfully sent and we will be in touch with you soon.</p>
<?php } ?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" id="contactform">
<div>
<p>
<label for="name">Name</label><br />
<input type="text" name="name" value="" id="name" class="required">
</p>
</div>
<div>
<p>
<label for="email">Email</label><br />
<input type="text" name="email" value="" id="email" class="required">
</p>
</div>
<div>
<p>
<label for="subject">Subject</label><br />
<input type="text" name="subject" value="" id="subject" class="required">
</p>
</div>
<div style="margin-bottom:25px;">
<p>
<label for="message">Message</label><br />
<textarea rows="5" name="message" value="" id="message" class="required"></textarea>
</p>
</div>
<div style="margin-bottom:25px;">
<img src="captcha.php" alt="captcha image">
<p>
<label for="captcha">(antispam code, 3 black symbols)</label><br />
<input type="text" name="captcha" maxlength="3" id="captcha" class="required">
</p>
</div>
<input type="submit" value="Send Message" name="submit" />
</form>
[/php]
表格中的代码：
[菲律宾]
请检查您是否用有效信息填写了所有字段。谢谢。
电子邮件已成功发送
感谢您与我们联系。您的电子邮件已成功发送，我们将很快与您联系。
如果（isset（$_POST[“验证码]））
你少了一个括号
已编辑以显示整个代码。。。。为缺少的验证码条件添加括号。实际上，您的代码没有检查验证码是否是通过post设置的。它只是对照post变量检查会话变量。如果两者都为空，则表单将通过邮件发送。您可能仍然存在captcha.php或会话变量问题
<?php
//If the form is submitted
if(isset($_POST['submit'])) {
//Check to make sure that the name field is not empty
if(trim($_POST['name']) == '') {
$hasError = true;
} else {
$name = trim($_POST['name']);
}
//Check to make sure that the subject field is not empty
if(trim($_POST['subject']) == '') {
$hasError = true;
} else {
$subject = trim($_POST['subject']);
}
//Check to make sure sure that a valid email address is submitted
if(trim($_POST['email']) == '') {
$hasError = true;
} else if (!eregi("^[A-Z0-9._%-]+@[A-Z0-9._%-]+\.[A-Z]{2,4}$", trim($_POST['email'])))
{
$hasError = true;
} else {
$email = trim($_POST['email']);
}
//Check to make sure comments were entered
if(trim($_POST['message']) == '') {
$hasError = true;
} else {
if(function_exists('stripslashes')) {
$message = stripslashes(trim($_POST['message']));
} else {
$message = trim($_POST['message']);
}
}
/*captcha 2*/
if(isset($_POST["captcha"])) {
if($_SESSION["captcha"]==$_POST["captcha"])
{
//CAPTHCA is valid; proceed the message: save to database, send by e-mail ...
//If there is no error, send the email
if(!isset($hasError)) {
$emailTo = 'enquiries@sjbprojects.com'; //Put your own email address here
$emailTo = 'sjbullen@gmail.com'; //Put your own email address here
$body = "Name: $name \n\nEmail: $email \n\nSubject: $subject \n\nMessage:\n $message";
$headers = 'From: SJB Projects website form <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' . $email;
mail($emailTo, $subject, $body, $headers);
$emailSent = true;
}
else
{
echo 'CAPTHCA is not valid; ignore submission';
}
}
} else {
///message here if CAPTCHA is not set (via post)
}
}
?>
<?php if(isset($hasError)) { //If errors are found ?>
<p class="error">Please check if you've filled all the fields with valid information. Thank you.</p>
<?php } ?>
<?php if(isset($emailSent) && $emailSent == true) { //If email is sent ?>
<p><strong>Email Successfully Sent!</strong></p>
<p>Thank you <strong><?php echo $name;?></strong> for contacting SJB Projects. Your email was successfully sent and we will be in touch with you soon.</p>
<?php } ?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" id="contactform">
<div>
<p>
<label for="name">Name</label><br />
<input type="text" name="name" value="" id="name" class="required">
</p>
</div>
<div>
<p>
<label for="email">Email</label><br />
<input type="text" name="email" value="" id="email" class="required">
</p>
</div>
<div>
<p>
<label for="subject">Subject</label><br />
<input type="text" name="subject" value="" id="subject" class="required">
</p>
</div>
<div style="margin-bottom:25px;">
<p>
<label for="message">Message</label><br />
<textarea rows="5" name="message" value="" id="message" class="required"></textarea>
</p>
</div>
<div style="margin-bottom:25px;">
<img src="captcha.php" alt="captcha image">
<p>
<label for="captcha">(antispam code, 3 black symbols)</label><br />
<input type="text" name="captcha" maxlength="3" id="captcha" class="required">
</p>
</div>
<input type="submit" value="Send Message" name="submit" />
</form>
请检查您是否用有效信息填写了所有字段。谢谢。
电子邮件已成功发送
感谢您联系SJB项目。您的电子邮件已成功发送，我们将很快与您联系。
如果（isset（$_POST[“验证码]））
你少了一个括号
已编辑以显示整个代码。。。。为缺少的验证码条件添加括号。实际上，您的代码没有检查验证码是否是通过post设置的。它只是对照post变量检查会话变量。如果两者都为空，则表单将通过邮件发送。您可能仍然存在captcha.php或会话变量问题
<?php
//If the form is submitted
if(isset($_POST['submit'])) {
//Check to make sure that the name field is not empty
if(trim($_POST['name']) == '') {
$hasError = true;
} else {
$name = trim($_POST['name']);
}
//Check to make sure that the subject field is not empty
if(trim($_POST['subject']) == '') {
$hasError = true;
} else {
$subject = trim($_POST['subject']);
}
//Check to make sure sure that a valid email address is submitted
if(trim($_POST['email']) == '') {
$hasError = true;
} else if (!eregi("^[A-Z0-9._%-]+@[A-Z0-9._%-]+\.[A-Z]{2,4}$", trim($_POST['email'])))
{
$hasError = true;
} else {
$email = trim($_POST['email']);
}
//Check to make sure comments were entered
if(trim($_POST['message']) == '') {
$hasError = true;
} else {
if(function_exists('stripslashes')) {
$message = stripslashes(trim($_POST['message']));
} else {
$message = trim($_POST['message']);
}
}
/*captcha 2*/
if(isset($_POST["captcha"])) {
if($_SESSION["captcha"]==$_POST["captcha"])
{
//CAPTHCA is valid; proceed the message: save to database, send by e-mail ...
//If there is no error, send the email
if(!isset($hasError)) {
$emailTo = 'enquiries@sjbprojects.com'; //Put your own email address here
$emailTo = 'sjbullen@gmail.com'; //Put your own email address here
$body = "Name: $name \n\nEmail: $email \n\nSubject: $subject \n\nMessage:\n $message";
$headers = 'From: SJB Projects website form <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' . $email;
mail($emailTo, $subject, $body, $headers);
$emailSent = true;
}
else
{
echo 'CAPTHCA is not valid; ignore submission';
}
}
} else {
///message here if CAPTCHA is not set (via post)
}
}
?>
<?php if(isset($hasError)) { //If errors are found ?>
<p class="error">Please check if you've filled all the fields with valid information. Thank you.</p>
<?php } ?>
<?php if(isset($emailSent) && $emailSent == true) { //If email is sent ?>
<p><strong>Email Successfully Sent!</strong></p>
<p>Thank you <strong><?php echo $name;?></strong> for contacting SJB Projects. Your email was successfully sent and we will be in touch with you soon.</p>
<?php } ?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" id="contactform">
<div>
<p>
<label for="name">Name</label><br />
<input type="text" name="name" value="" id="name" class="required">
</p>
</div>
<div>
<p>
<label for="email">Email</label><br />
<input type="text" name="email" value="" id="email" class="required">
</p>
</div>
<div>
<p>
<label for="subject">Subject</label><br />
<input type="text" name="subject" value="" id="subject" class="required">
</p>
</div>
<div style="margin-bottom:25px;">
<p>
<label for="message">Message</label><br />
<textarea rows="5" name="message" value="" id="message" class="required"></textarea>
</p>
</div>
<div style="margin-bottom:25px;">
<img src="captcha.php" alt="captcha image">
<p>
<label for="captcha">(antispam code, 3 black symbols)</label><br />
<input type="text" name="captcha" maxlength="3" id="captcha" class="required">
</p>
</div>
<input type="submit" value="Send Message" name="submit" />
</form>
请检查您是否用有效信息填写了所有字段。谢谢。
电子邮件已成功发送
感谢您联系SJB项目。您的电子邮件已成功发送，我们将很快与您联系。
[编辑]2011-12-20 8:22pm CST-根据场外聊天，用OP使用的最终代码更新了第二段代码。
有一种更好的方法来编写代码。我在下面举一个例子。提出问题，我会用注释更新代码。我修改了验证码的if语句，这样就不需要双if
。在if
语句中使用|
（或）会导致PHP在测试第一个条件后停止（如果第一个条件的计算结果为true）。因此，如果未设置该变量，它将永远不会进行POST与SESSION的比较
另外，我将hasError变量默认为false，并且正在测试布尔值。这是更好的，因为它是有意义的。想想那些会追上你的程序员。如果说得通的话，就更容易合作了。你可能就是那个程序员：）
[编辑以添加会话_start（）；
]
[edit]2011-12-20 8:22pm CST-根据场外聊天，用OP使用的最终代码更新了第二段代码。
有一种更好的方法来编写代码。我在下面举一个例子。提出问题，我会用注释更新代码。我修改了验证码的if语句，这样就不需要双if
。在if
语句中使用|
（或）会导致PHP在测试第一个条件后停止（如果第一个条件的计算结果为true）。因此，如果未设置该变量，它将永远不会进行POST与SESSION的比较
另外，我将hasError变量默认为false，并且正在测试布尔值。这是更好的，因为它是有意义的。想想那些会追上你的程序员。如果说得通的话，就更容易合作了。你可能就是那个程序员：）
[编辑以添加会话_start（）；
]
您的文件是否调用了session_start（）？如果没有它，$\u会话['catpcha']将为空（并可能抛出通知）。另外，请注意，您应该检查存储的captcha值是否为空。否则，用户只需通过不加载图像来传递验证码即可。如果（！empty（$\u SESSION['captcha']）&&$\u SESSION['captcha']==$captcharomuser）{valid}检查会话存储的captcha值是否为空？这是我在上面发布的代码。顺便说一句，$captchaFromUser就是$u POST['captcha']。通常最好避免直接访问$\u POST值，而不检查它们是否已先设置。如果没有设置，那么你会收到通知。很抱歉，我以前没有看到代码，所以我将If（isset（$\u POST[“captcha]”）替换为If（！empty（$\u SESSION['captcha]]）&&$\u SESSION['captcha]===$captcharomuser），所以现在，即使没有输入captcha，它似乎仍然提交，但随后它会清除所有表单字段，并且没有错误消息-就像再次开始一样…对不起，感谢您的帮助，我已经花了3个晚上试图解决这个问题，我想我需要一位专家！您的文件是否有对会话_start（）的调用？如果没有它，$\u会话['catpcha']将为空（并可能抛出通知）。另外，请注意，您应该检查存储的captcha值是否为空。否则，用户只需通过不加载图像来传递验证码即可。如果（！empty（$\u SESSION['captcha']）&&$\u SESSION['captcha']==$captcharomuser）{valid}检查会话存储的captcha值是否为空？这是我在上面发布的代码。顺便说一句，$captchaFromUser就是$u POST['captcha']。通常，最好避免使用直接访问$\u POST值
<?php
session_start();
function clean_for_email( $inbound )
{
return str_replace( array( "\n", "\r" ), "", $inbound );
}
// I really like the name of this function. :D
function outputInput( $name, $required )
{
$attribs[] = "name=\"{$name}\"";
$attribs[] = "id=\"{$name}\"";
$attribs[] = $required?'class="required"':'';
$attribs[] = 'type="text"';
if ( count( $_POST ) && array_key_exists( $name, $_POST ) )
{
$attribs[] = 'value="' . htmlspecialchars( $_POST[$name] ) . '"';
}
echo '<input ' . implode( ' ', $attribs ) . '>';
}
//------------------------------------------------------------------------
function outputTextarea( $name, $required, $rows = 5 )
{
$attribs[] = "name=\"{$name}\"";
$attribs[] = "id=\"{$name}\"";
$attribs[] = $required?'class="required"':'';
$attribs[] = 'rows="5"';
$value = '';
if ( count( $_POST ) && array_key_exists( $name, $_POST ) )
{
$value = htmlspecialchars( $_POST[$name] );
}
echo '<textarea ' . implode( ' ', $attribs ) . '>' . $value . '</textarea>';
}
// default value
$hasError = false;
$emailSent = false;
//If the form is submitted
if( count( $_POST ) && isset($_POST['submit'] ) ) {
//Check to make sure that the name field is not empty
if(trim($_POST['name']) == '') {
$hasError = true;
} else {
$name = trim($_POST['name']);
}
//Check to make sure that the subject field is not empty
if(trim($_POST['subject']) == '') {
$hasError = true;
} else {
$subject = trim($_POST['subject']);
}
//Check to make sure sure that a valid email address is submitted
if(trim($_POST['email']) == '') {
$hasError = true;
} else if ( ! preg_match( '/^.+@.+$/i', trim( $_POST['email'] ) ) ) {
$hasError = true;
} else {
$email = trim($_POST['email']);
}
//Check to make sure comments were entered
if( trim($_POST['message']) == '') {
$hasError = true;
} else {
if(function_exists('stripslashes')) {
$message = stripslashes(trim($_POST['message']));
} else {
$message = trim($_POST['message']);
}
}
if ( ! array_key_exists( 'captcha', $_POST ) || $_SESSION['captcha'] != $_POST["captcha"] ) {
$hasError = true;
}
if( ! $hasError )
{
$captchaValid = true;
//If there is no error, send the email
if( $hasError == false ) {
$emailTo = 'xxx'; //Put your own email address here
$body = "Name: $name \n\nEmail: $email \n\nSubject: $subject \n\nMessage:\n $message";
$headers = 'From: website form <'.clean_for_email( $emailTo ).'>' . "\r\n" . 'Reply-To: ' . clean_for_email( $email );
mail($emailTo, $subject, $body, $headers);
$emailSent = true;
} else {
}
}
}
?>
<? if( $hasError ) : ?>
<p class="error">Please check if you've filled all the fields with valid information Thank you.</p>
<? endif; ?>
<? if( $emailSent == true) : ?>
<p><strong>Email Successfully Sent!</strong></p>
<p>Thank you <strong><?php echo $name;?></strong> for contacting us. Your email was successfully sent and we will be in touch with you soon.</p>
<? endif; ?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>" id="contactform">
<div>
<p>
<label for="name">Name</label><br />
<? outputInput( 'name', true ); ?>
</p>
</div>
<div>
<p>
<label for="email">Email</label><br />
<? outputInput( 'email', true ); ?>
</p>
</div>
<div>
<p>
<label for="subject">Subject</label><br />
<? outputInput( 'subject', true ); ?>
</p>
</div>
<div style="margin-bottom:25px;">
<p>
<label for="message">Message</label><br />
<? outputTextarea( 'message', true ); ?>
</p>
</div>
<div style="margin-bottom:25px;">
<img src="captcha.php" alt="captcha image">
<p>
<label for="captcha">(antispam code, 3 black symbols)</label><br />
<? outputInput( 'captcha', true ); ?>
</p>
</div>
<input type="submit" value="Send Message" name="submit" />
</form>