php中使用tesseract识别验证码，并且模拟登录，验证码错误

代码如下：

<?php
header("Content-type:text/html;charset=utf-8");
/**
 * 模拟登录
 */

//1.初始化变量
$cookie_file = tempnam('./temp','cookie');
$login_url = "http://210.32.33.91:8080/reader/redr_verify.php";//登录页面
$verify_code_url = "http://210.32.33.91:8080/reader/captcha.php";//验证码页面

//2.获取cookies
echo "正在获取COOKIE...<br>";
$curl = curl_init();
$timeout = 5;
curl_setopt($curl, CURLOPT_URL, $login_url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($curl,CURLOPT_COOKIEJAR,$cookie_file); //获取COOKIE并存储
$contents = curl_exec($curl);
curl_close($curl);
//3.取出验证码
echo "COOKIE获取完成，正在取验证码...<br>";
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $verify_code_url);
curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_file);//保存cookie
curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);//使用cookie
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$img = curl_exec($curl);
curl_close($curl);

$codename = time();
$fp = fopen("/home/wwwroot/default/tesseract/Test/images/$codename.png","w");
echo "<img src='./images/$codename.png'>";
fwrite($fp,$img);
fclose($fp);
//开始识别验证码
echo "验证码取出完成，正在休眠，正在识别验证码...<br>";

passthru("/usr/bin/tesseract  /home/wwwroot/default/tesseract/Test/images/$codename.png /home/wwwroot/default/tesseract/Test/images/$codename");
$code = file_get_contents("./images/$codename.txt");

echo "验证码成功取出：$code<br>";

echo "正在准备模拟登录...<br>";

$post_url = "http://210.32.33.91:8080/reader/redr_verify.php";
//为安全性，此处密码不提供。
$post = "number=1111111&passwd=111111&captcha=$code&select=cert_no&returnUrl=";
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $post_url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER,1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $post);
curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_file);
curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
$result=curl_exec($curl);
curl_close($curl);
echo str_replace('captcha.php','http://210.32.33.91:8080/reader/captcha.php',$result);

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网上的评论是 识别率低

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2016/1/25 14:51更新

Linux的话captcha目录,cookies目录给写权限
你一步步断点调试,看你那个程序生成的结果是多少,图片是多少,

代码在:https://github.com/rainwsy/sf/tree/master/library-OCR-login

---

更新:
你应该
1.将验证码存下来,跟文字结果对比下,
2.对比每次的session_id是否一致
3.CURLOPT_COOKIEJAR第一次用的时候存session_id就可以了,后面的操作用CURLOPT_COOKIEFILE来读取session_id,其实你可以对比下几次请求返回header头中的session_id是否一致
我的验证码识别结果:

写了个DEMO:

指出几个问题,获取session在获取验证码的那一步一并获取就OK,没必要先取得session再取验证码,
当看到账号密码隐藏的时候我再想这是给校友回答的吗?

<?php
require_once 'OCR.php';
$loginUrl = "http://210.32.33.91:8080/reader/redr_verify.php"; // 登录页面
$captchaUrl = "http://210.32.33.91:8080/reader/captcha.php"; // 验证码页面

$cookie_file = __DIR__ . DIRECTORY_SEPARATOR . 'cookies' . DIRECTORY_SEPARATOR . date('YmdHis') . '.txt';

// 获取验证码
$captchaString = get($captchaUrl, $cookie_file, true);
$tempCaptchaFile = __DIR__ . DIRECTORY_SEPARATOR . 'captcha' . DIRECTORY_SEPARATOR . date('YmdHis') . '.gif';
file_put_contents($tempCaptchaFile, $captchaString);
/*既然你说不是验证码的问题,我就不发出来了*/
$ocr = new OCR($tempCaptchaFile);
$captcha = $ocr->getCaptcha();

/* 开始登陆 */
$username = '用户名';
$passwd = '密码';
$postArray = [
    'number' => $username,
    'passwd' => $passwd,
    'captcha' => $captcha,
    'select' => 'cert_no',
    'returnUrl' => ''
];
$postData = http_build_query($postArray);
echo post($loginUrl, $postData, $cookie_file);

function get($url, $cookie_file, $isCookiesSave = false)
{
    // 初始化
    $curl = curl_init($url);
    $header = array();
    $header[] = 'User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36';
    curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
    // 不输出header头信息
    curl_setopt($curl, CURLOPT_HEADER, 0);
    if ($isCookiesSave) {
        curl_setopt($curl, CURLOPT_COOKIEJAR, $cookie_file); // 存储cookies
    } else {
        curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
    }
    // 保存到字符串而不是输出
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    // 是否抓取跳转后的页面
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
    $info = curl_exec($curl);
    curl_close($curl);
    return $info;
}

function post($url, $data, $cookie_file)
{
    // 初始化
    $curl = curl_init($url);
    $header = array();
    $header[] = 'User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36';
    curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
    // 不输出header头信息
    curl_setopt($curl, CURLOPT_HEADER, 0);
    // 保存到字符串而不是输出
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie_file);
    // post数据
    curl_setopt($curl, CURLOPT_POST, 1);
    // 请求数据
    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
    // 是否抓取跳转后的页面
    curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
    $response = curl_exec($curl);
    curl_close($curl);
    return $response;
}