我不是PHP程序员，但是使用了它，足以放入联系表单。但是，我正在尝试添加一个验证码字段，现在可以使用，但表单不会对其进行验证 - 所以无论什么都提交
有人可以帮忙吗？对不起，如果代码很乱，并提前感谢
我页面顶部的代码
<?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 $_SERVER['PHP_SELF']; ?>" id="contactform">
<div>
<p>
<label for="name">Name</label><br />
<input type="text" name="name" value="" id="name" class="required">
</p>
</div>
<div>
<p>
<label for="email">Email</label><br />
<input type="text" name="email" value="" id="email" class="required">
</p>
</div>
<div>
<p>
<label for="subject">Subject</label><br />
<input type="text" name="subject" value="" id="subject" class="required">
</p>
</div>
<div style="margin-bottom:25px;">
<p>
<label for="message">Message</label><br />
<textarea rows="5" name="message" value="" id="message" class="required"></textarea>
</p>
</div>
<div style="margin-bottom:25px;">
<img src="captcha.php" alt="captcha image">
<p>
<label for="captcha">(antispam code, 3 black symbols)</label><br />
<input type="text" name="captcha" maxlength="3" id="captcha" class="required">
</p>
</div>
<input type="submit" value="Send Message" name="submit" />
</form>
[/php]
答案 0 :(得分：0)
if（isset（$ _ POST [“captcha”]））
你错过了一个括号。
编辑显示整个代码....为缺少的验证码条件添加了括号。因此，您的代码没有检查验证码是否通过post设置。它只是根据post变量检查会话变量。如果两者都是空白的，表单将邮寄。您可能仍然遇到captcha.php或会话变量的问题。
<?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>
答案 1 :(得分：0)
[edit] 2011-12-20 8:22 pm CST - 使用OP正在使用的最终代码更新了第二个代码块 - 基于异地聊天。
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，我会用评论解释更新代码。我修改了你对验证码的if语句，因此它不需要双if。在||语句中使用if（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，如果未设置变量，则永远不会继续进行POST与SESSION的比较。
另外，我将你的hasError变量默认为false，并测试了boolean值。这是更好的因为它有意义。想想那些会追随你的程序员。如果它有意义，它将更容易使用。 你可能是那个程序员：）
[已编辑以添加session_start();]
<?php
session_start();
// default value
$hasError = false;
//If the form is submitted
if(isset($_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']);
}
}
if( ! isset( $_POST["captcha"] ) || $_SESSION["captcha"] != $_POST["captcha"] ) {
$hasError = true;
echo 'CAPTHCA is not valid; ignore submission<br>';
echo $_POST['captcha' . ' != ' . $_SESSION['captcha'] . '<br>';
}
//If there is no error, send the email
if( $hasError == false ) {
$emailTo = 'email@email.com'; //Put your own email address here
$emailTo = 'email@email.com'; //Put your own email address here
$body = "Name: $name \n\nEmail: $email \n\nSubject: $subject \n\nMessage:\n $message";
// !!!!!!!!!!!!!!!! REMOVE \r\n from $emailTo or your form will be hacked !!!!!!!!!!!!!!!!!!!!!!
$headers = 'From: website form <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' . $email;
mail($emailTo, $subject, $body, $headers);
$emailSent = true;
} else {
}
}
[编辑 - 完整代码，编辑和（希望）改进]
<?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>