大家好我想在我的表单上获得验证验证码，但我想在表格上进行验证而不更改状态。
当前页面刷新以显示错误消息，页面丢失所有表单值，我可以理解这对于必须重新键入信息的用户来说可能会令人沮丧。
如何才能在验证码图像区域正下方显示错误信息？通过这种方式，用户可以对其错误进行必要的更正，而无需重新输入所有内容。
<?php session_start();
include_once ("resources/Connections/kite.php");
include_once $_SERVER['DOCUMENT_ROOT'] . '/securimage/securimage.php';
$securimage = new Securimage();
?>
<div class="c13">
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="69%" align="center"><p class="c6">New Account</p>
<?php
$username = mysql_real_escape_string($_POST['username']);
$email = mysql_real_escape_string($_POST['email']);
$password = mysql_real_escape_string($_POST['password']);
$password = mysql_real_escape_string($_POST['password2']);
//check if the form has been submitted
if(isset($_POST['submit'])){
if ($securimage->check($_POST['captcha_code']) == false) {
// the code was incorrect
// you should handle the error so that the form processor doesn't continue
// or you can use the following code if there is no validation or you do not know how
echo "The security code entered was incorrect.<br /><br />";
echo "Please go <a href='javascript:history.go(-1)'>back</a> and try again.";
}
else
//success
echo '<p class="c7">Thanks for signing up. We have just sent you an email at <b>'.$email.'</b>. Please click on the confirmation link within this message to complete registration.<br><img src="resources/img/spacer.gif" alt="" width="1" height="20"><br><span class="c12">
<input name="" type="button" class="c11" value="Register" onClick="location.href=\'main.php\'"/>
</span><br><img src="resources/img/spacer.gif" alt="" width="1" height="15"></p></div>';
include_once ("resources/php/footer.php");
exit;
}
?>
<p class="c7">Just enter your details to get started</p>
<div class="c10">
<form action="<?php echo $PHP_SELF;?>" method="post" id="register" name="register">
<table width="100%" border="0" cellpadding="0" cellspacing="">
<tr>
<td colspan="3" class="c8" height="25px" valign="bottom">Username</td>
</tr>
<tr>
<td width="46%"></td>
<td width="46%"></td>
<td width="54%" class="c8"></td>
</tr>
<tr>
<td colspan="3" class="c8"><span id="sprytextfield2">
<input name="username" type="text" class="required"/>
<span class="textfieldRequiredMsg">A value is required.</span><span class="textfieldMaxCharsMsg">Exceeded maximum number of characters.</span></span></td>
</tr>
<tr>
<td colspan="3" class="c8" height="25px" valign="bottom">Email</td>
</tr>
<tr>
<td></td>
<td></td>
<td class="c8"></td>
</tr>
<tr>
<td colspan="3" class="c8"><span id="sprytextfield3">
<input name="email" type="text" class="required"/>
<span class="textfieldRequiredMsg">A value is required.</span><span class="textfieldMaxCharsMsg">Exceeded maximum number of characters.</span><span class="textfieldInvalidFormatMsg">Invalid format.</span></span></td>
</tr>
<tr>
<td></td>
<td></td>
</tr>
<tr>
<td colspan="3" class="c8" height="25px" valign="bottom">Password (minimum of 8 characters)</td>
</tr>
<tr>
<td></td>
<td></td>
<td class="c8"></td>
</tr>
<tr>
<td colspan="3" class="c8"><span id="sprytextfield4">
<input name="password" type="password" class="required" id="password"/>
<span class="textfieldRequiredMsg">A value is required.</span><span class="textfieldMinCharsMsg">Minimum number of characters not met.</span><span class="textfieldMaxCharsMsg">Exceeded maximum number of characters.</span></span></td>
</tr>
<tr>
<td colspan="3" class="c8" height="25px" valign="bottom">Confirm Password</td>
</tr>
<tr>
<td></td>
<td></td>
<td class="c8"></td>
</tr>
<tr>
<td colspan="3" class="c8"><span id="spryconfirm1">
<input name="password2" type="password" class="required"/>
<span class="confirmRequiredMsg">A value is required.</span><span class="confirmInvalidMsg">The values don't match.</span></span></td>
</tr>
<tr>
<td colspan="3" class="c8" height="25px" valign="bottom">Enter Code</td>
</tr>
<tr>
<td colspan="3" class="c8"><img id="captcha" src="resources/securimage/securimage_show.php" alt="CAPTCHA Image" /> </td>
</tr>
<tr>
<td colspan="3" class="c8"><input type="text" name="captcha_code" size="10" maxlength="6" />
<a href="#" onclick="document.getElementById('captcha').src = 'resources/securimage/securimage_show.php?' + Math.random(); return false">Swap image</a></td>
</tr>
<tr>
<td colspan="3" class="c8"><span class="c12"><img src="resources/img/spacer.gif" width="1" height="40" alt="" /></span></td>
</tr>
<tr>
<td colspan="3" class="c8"><span class="c12">
<input name="submit" type="submit" class="c11" value="Continue"/>
</span></td>
</tr>
</table>
</form>
</div>
<br /></td>
<td width="31%" valign="middle" align="center"> </td>
</tr>
</table>
</div>
答案 0 :(得分：1)
用户输入的值也正在发送，因此如果出现错误，为什么不访问它们并将它们放入字段
<input name="username" type="text" class="required" value="<?php echo $username ?>"/>
这会将用户输入的内容放入字段中。当然，您需要设置所有相关的错误检查。