我有验证码在captcha.php中创建一个图像。在我的联系人php页面上,它要求提供图像&它有重新加载,一切正常。我似乎无法找到验证它的方法。
以下是创建验证码图像的代码:
<?php
session_start();
$word_1 = '';
$word_2 = '';
for ($i = 0; $i < 4; $i++)
{
$word_1 .= chr(rand(97, 122));
}
for ($i = 0; $i < 4; $i++)
{
$word_2 .= chr(rand(97, 122));
}
$_SESSION['random_number'] = $word_1.' '.$word_2;
$dir = '/addons/fonts/';
$image = imagecreatetruecolor(165, 50);
$font = "recaptchaFont.ttf"; // font style
$color = imagecolorallocate($image, 0, 0, 0);// color
$white = imagecolorallocate($image, 255, 255, 255); // background color white
imagefilledrectangle($image, 0,0, 709, 99, $white);
imagettftext ($image, 22, 0, 5, 30, $color, $dir.$font, $_SESSION['random_number']);
header("Content-type: image/png");
imagepng($image);
?>
这就是该文件中的所有内容。
接下来是我的实际表格中的代码(联系我们页面):
<form id="contactForm" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<table>
<tr>
<td><span class="greyText">Enter text shown:</span></td>
<td>
<div id="captcha-wrap">
<div class="captcha-box">
<img src="captcha.php" alt="" id="captcha" />
</div>
<div class="text-box">
<label>Type the two words:</label>
<input name="captcha-code" type="text" id="captcha-code">
</div>
<div class="captcha-action">
<img src="./images/captcha-refresh.png" alt="" id="captcha-refresh" />
</div>
</div>
<span id="captchaInfo">*</span>
</td>
</tr>
<tr>
<td colspan="2">
<div class="seperator"> </div>
<input type="submit" name="submit" class="styleButton" style="float:right;margin-right:10px" value="SUBMIT" /></td>
</tr>
</table>
</form>
我在该表中有其他行名称,电子邮件等,但我刚删除它以缩短它。
&安培;在联系页面的文档就绪功能中,我有这个代码在单击按钮时刷新验证码:
// refresh captcha
$('img#captcha-refresh').click(function() {
change_captcha();
});
function change_captcha()
{
document.getElementById('captcha').src='jquery-captcha.php?rnd=' + Math.random();
}
接下来是我对整个表单本身的验证。它适用于除验证码之外的所有内容:
$(document).ready(function(){
//global vars
var form = $("#contactForm");
var name = $("#name");
var nameInfo = $("#nameInfo");
var telephone = $("#telephone");
var telephoneInfo = $("#telephoneInfo");
var email = $("#email");
var emailInfo = $("#emailInfo");
var message = $("#message");
var messageInfo = $("#messageInfo");
var captcha = $("#captcha-code");
var captchaInfo = $("#captchaInfo");
//On blur
name.blur(validateName);
telephone.blur(validatePhone);
email.blur(validateEmail);
message.blur(validateMessage);
captcha.blur(validateCaptcha);
//On key press
name.keyup(validateName);
telephone.keyup(validatePhone);
message.keyup(validateMessage);
captcha.keyup(validateCaptcha);
//On Submitting
form.submit(function(){
if(validateName() & validateEmail() & validatePhone() & validateMessage() & validateCaptcha())
return true
else
return false;
});
function validateName(){
//if it's NOT valid
if(name.val().length < 4){
name.addClass("error");
nameInfo.text("* Name Required");
nameInfo.addClass("error");
return false;
}
//if it's valid
else{
name.removeClass("error");
nameInfo.text("*");
nameInfo.removeClass("error");
return true;
}
}
function validateCaptcha(){
$.post("captchaValidate.php?"+$("#contactForm").serialize(), {
}, function(response){
if(response==1)
{
captcha.removeClass("error");
captchaInfo.text("*");
captchaInfo.removeClass("error");
return true;
}
else
{
captchaInfo.text("* Please enter the words you see in the box above. If you are having trouble seeing it, click the refresh button.");
captchaInfo.addClass("error");
captchaInfo.css({'float': 'left', 'margin-left': '5px'});
return false;
}
});
}
});
我再次删除了上面的一些代码,使其更短,但我离开了validateName函数,这样你就可以看到我几乎完成了其余的代码。
在validateCaptcha代码中,它指向此页面/代码:
<?php
session_start();
if(@strtolower($_REQUEST['captcha-code']) == strtolower($_SESSION['random_number']))
{
echo 1;// YAY!
}
else
{
echo 0; // invalid code
}
?>
任何对此的帮助都会非常感激我已经被困住了这么久!我已经尝试了一些东西,但似乎没有任何效果。
答案 0 :(得分:3)
阅读本文: -
PHP jQuery验证CAPTCHA代码示例
http://captcha.biz/doc/php/samples/php-jquery-validation-captcha-sample.html
PHP验证码
http://www.9lessons.info/2011/01/php-captcha-code.html
jquery-validation / demo / captcha
https://github.com/jzaefferer/jquery-validation/blob/master/demo/captcha/index.php
答案 1 :(得分:0)
如果你不介意使用简单的数学验证码,这个很容易集成到你自己的代码中。它使用PHP和jQuery,因此无论是否启用Javascript都可以使用它。我写了一个关于它的教程,并提供项目下载,其中包含开箱即用的所有项目文件。
使用jQuery和PHP制作一个简单的Math Captcha http://www.sinawiwebdesign.com/blog/topics/programming/jquery-and-php-and-catcha-tutorial/
我希望这会有所帮助。
答案 2 :(得分:0)
使用jquery验证在php中创建简单的capcha示例如果您对此有任何帮助
创建capcha代码需要三个文件
capcha.php
form.php
check-capcha.php
中添加的字体arial.ttf
<?php
session_start();
$string = '';
for ($i = 0; $i < 5; $i++) {
// this numbers refer to numbers of the ascii table (lower case)
$string .= chr(rand(97, 122));
}
$_SESSION['random_code'] = $string;
$data['code'] = $string;
$dir = 'fonts/';
if(!is_dir($dir)){
mkdir($dir);
}
$image = imagecreatetruecolor(170, 60);
$black = imagecolorallocate($image, 0, 0, 0);
$color = imagecolorallocate($image, 200, 100, 90); // red
$white = imagecolorallocate($image, 255, 255, 255);
imagefilledrectangle($image,0,0,399,99,$white);
imagettftext ($image, 30, 0, 10, 40, $color, $dir."arial.ttf", $_SESSION['random_code']);
$save= "test.png";
imagepng($image,$save);
ob_start();
imagedestroy($image);
echo json_encode($data);
?>
form.php
<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.15.0/jquery.validate.js"></script>
<script type="application/javascript">
$(document).ready(function(e) {
$('#test').validate({
rules:{
capcha:{required: true,
remote: {
url: "check-capcha.php",
type: "post",
data:{hiddencapcha:function(){return $('#hidden_capcha').val()}}
}
}
},
messages:{
capcha:{
remote:"invalid capcha"
}
}
});
$.ajax({
url: "capcha.php",
success: function( result ) {
var newd = JSON.parse(result);
$('input[name=hidden_capcha]').val(newd.code);
$('#capchas').attr('src',"test.png?"+ new Date().getTime());
},error: function(){ alert(result)}
});
$('#generate_capcha').click(function(){
$.ajax({
url: "capcha.php",
success: function( result ) {
var newd = JSON.parse(result);
$('input[name=hidden_capcha]').val(newd.code);
$('#capchas').attr('src',"test.png?"+ new Date().getTime());
},error: function(){ alert(result)}
});
});
});
</script>
<form name="test" id="test">
<span id="capchas_images"><img id="capchas" src="test.png" /></span> <a href="javascript:void(0)" id="generate_capcha">Refresh</a>
<input type="text" name="capcha" />
<input type="hidden" name="hidden_capcha" id="hidden_capcha" />
</form>
check-capch.php
<?php
if($_POST['capcha']==$_POST['hiddencapcha'])
{
echo "true";
}else{
echo "false";
}
?>
http://myphpinformation.blogspot.in/2016/05/create-simple-capcha-in-php-with-jquery-validation.html