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  Classes of Mr.Empty  >  PHP Click CAPTCHA  >  example_ajax.php  >  Download  
File: example_ajax.php
Role: Example script
Content type: text/plain
Description: Example script (Ajax)
Class: PHP Click CAPTCHA
CAPTCHA validation checking where the user clicks
Author: By
Last change:
Date: 1 year ago
Size: 4,560 bytes
 

Contents

Class file image Download
<?php
include('ClickCaptcha.class.php');
$ClickCaptcha = new ClickCaptcha();
$ClickCaptcha->bg './images/click_bg_ajax.png';
$ClickCaptcha->text './images/click_text_ajax.png';
// simple demonstration!
$request = isset($_GET['request']) ? $_GET['request'] : '';
if(
$request=='captcha'){
    
$ClickCaptcha->display();
    
//$ClickCaptcha->display([0-8]);
    //$ClickCaptcha->display([0-8], [3-10]);
    
return;
}else if(
$request=='submit'){
    
//sleep(1);
    
$position = isset($_POST['position']) ? $_POST['position'] : array(00);
    
$verifysession $ClickCaptcha->validate($position[0], $position[1]);
    
$verifysession $verifysession?'true':'false';
    echo 
json_encode(array($verifysession$position[0].', '.$position[1]));
    return;
}
?><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
        <title>ClickCaptcha (Ajax)</title>
        <script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
    </head>
    <body>
        <div style="TEXT-ALIGN: center">
            <span id="return" style="display:none">
                Captcha: <span>false</span>, Position: <span>unknown</span>
            </span>
            <span id="loading" style="display:none"><img src="./images/loading.gif" border="0" /> Checking...</span><br />
            <form id="Click" action="example_ajax.php?request=submit" method="POST">
                <input type="hidden" name="position[]" />
                <input type="hidden" name="position[]" />
                <input type="image" src="example_ajax.php?request=captcha" />
            </form>
        </div>
        <script type="text/javascript">
            var isNotRun = true;
            $("#Click input").eq(2).click(function(){
                $("#Click input").eq(0).val(getPosition().X);
                $("#Click input").eq(1).val(getPosition().Y);
                return isNotRun;
            });
            $("#Click").submit(function(){
                isNotRun = false;
                $('#return').hide();
                $('#loading').show();
                $.ajax({
                    url: $(this).attr('action'),
                    data: $(this).serialize(),
                    type: $(this).attr('method'),
                    error: function(request){},
                    success: function(json){
                        $('#loading').hide();
                        $('#return').show();
                        $('#return').children("span").eq(0).html(json[0]);
                        $('#return').children("span").eq(1).html(json[1]);
                        $("#Click input").eq(2).attr("src", "./example_ajax.php?request=captcha&r="+Math.random());
                        isNotRun = true;
                    },
                    dataType: 'json'
                });
                return false;
            });
            function getPosition(e){
                e = e || window.event;
                var obj = {
                    X: 0,
                    Y: 0,
                    getElementPosition:function(){
                        var pos = {
                            "top": 0,
                            "left": 0
                        };
                        if(obj.offsetParent){
                            while(obj.offsetParent){
                                pos.top += obj.offsetTop;
                                pos.left += obj.offsetLeft;
                                obj = obj.offsetParent
                            }
                        }else if(obj.x){
                            pos.left += obj.x
                        }else if(obj.y){
                            pos.top += obj.y
                        }
                        return {
                            Left: pos.left,
                            Top: pos.top
                        }
                    }
                };
                if(e.offsetX && e.offsetY){
                    obj.X = e.offsetX;
                    obj.Y = e.offsetY;
                }else if(e.layerX && e.layerY){
                    obj.X = e.layerX;
                    obj.Y = e.layerY;
                }else{
                    return null;
                }
                return obj;
            }
        </script>
    </body>
</html>