我对 PHP 不是很熟悉。在过去，我能够阅读和修复使用 PHP 的小问题，但这给我带来了很多麻烦。
我有一个带有两个输入框的表单，一个用于电子邮件，一个用于消息。
现在，我尝试在表单中添加另一个框，以验证人工访问以达到反垃圾邮件的目的。
这是我无法通过验证过程的代码。
//create ramdom numbers
<?php
$num1 = rand(0,9);
$num2 = rand(0,9);
?>
<?php
$error = '';
$email = '';
$comments = '';
$verify = '';
if(isset($_POST['contactus'])) {
$email = $_POST['email'];
$comments = $_POST['comments'];
$app = $_SERVER["REQUEST_URI"];;
if(trim($comments) == '') {
$error = '<div class="error_message">Attention! Please enter your message.</div>';
} else if(trim($email) == '') {
$error = '<div class="error_message">Attention! Please enter a valid email address.</div>';
} else if(!isEmail($email)) {
$error = '<div class="error_message">Attention! You have enter an invalid e-mail address, try again.</div>';
}
//This is where Im having problem. From this point the form doesn't go on.
if(trim($verify) == '') {
error( '<div class="error_message">Attention! Please enter the verification number.</div>');
} else if(trim($verify) != $verify_result) {
error( '<div class="error_message">Attention! The number you entered is incorrect.</div>');
}
if($error == '') {
if(get_magic_quotes_gpc()) {
$comments = stripslashes($comments);
}
$address = "info@myaddress.com";
$e_subject = 'You\'ve been contacted from an app web page ' . $name . '.';
$e_body = "You have been contacted using the app comments box on the above app web page, their additional message is as follows.\r\n\n";
$e_content = "\"$comments\"\r\n\n";
$e_reply = "$name $email";
$msg = $e_body . $e_content . $e_reply;
mail($address, $e_subject, $msg, $app, "From: $email\r\nReply-To: $email\r\nReturn-Path: $email\r\n");
// Email has sent successfully, echo a success page.
echo "<div id='success_page_apps'>";
echo "<h1>Email Sent Successfully.</h1>";
echo "<p>Thank you, your message has been submitted to us.</p>";
echo "</div>";
echo '<input type="button" value="Send Another" onClick="history.go(-1); return (true); ">';
}
}
if(!isset($_POST['contactus']) || $error != '') {
<?php echo $error; ?>
<fieldset id="contact_apps">
<form method="post" action="#ContactForm">
<label for="email" accesskey="E"><span class="required"></span> Email</label>
<input name="email" type="text" id="email" size="33" value="<?php echo$email;?>"/>
<textarea name="comments" cols="50" rows="15" id="comments"><?php echo$comments;?></textarea>
//This is the 'Are you human?' message
<p><span class="required">*</span> Are you human?</p>
<label class="numbersq" for='verify' accesskey='V'><?php echo $num1; ?> + <?php echo $num2; ?> =</label>
<input class="numbersa" name="verify" type="text" id="verify" size="4" value=""/>
<input name="verify_result" type="hidden" size="4" value="<?php echo $num1+$num2; ?>" /><br />
<input name="contactus" type="submit" class="send" id="contactus" >
</form>
</fieldset>
}
?>
请注意“你是人类吗”消息和我在脚本中的条件句，这是我认为我做错了什么的地方。