保存图像的php-curl脚本---实际上是验证码图像

Question

我有一个叫做Curl的卷发类。

让我们假设我有这样的代码：

$url = 'http://www.google.com' 
$fields = array('q'=>'search term'); //maybe some other arguments. but let's keep it simple. 
$curl = new Curl(); 
$page = $curl->post($url,$fields); 

$页面都会有一些图片至极卷曲默认不加载它们。我需要知道如何在不使用卷曲的情况下保存特定图像。一旦我使用$ page = $ curl-> post（..）我需要知道如何在不使用另一个$ curl-> post（_image_location_）来获取该文件的情况下保存该图像。

需要此功能的原因是从表单中保存验证码图像。我需要访问表单并获取正在加载的特定图像。如果我尝试访问图像的URL，它将是一个不同的验证码图像。

Answer 1

你所描述的是不可能的。对于网页中的每个外部资源（即任何不属于HTML内容本身的内容，例如图像，脚本，样式表等），您都必须提出一个单独的请求来检索它。这就是所有浏览器的操作方式。

许多验证码在会话的基础上工作。您向HTML页面的初始请求可能会创建一个会话cookie，该cookie将作为响应头文件的一部分发回。当请求图片时，这个cookie将会被预期。如果你只是对图像做一个简单的卷曲请求，你不会发送该cookie，因此你会得到一个不同的图像。

您将不得不分析该页面并确定究竟会进行什么类型的会话管理，并适当修改您的Curl请求，但正如我所提到的，我怀疑它会基于Cookie。您可能需要查看CURLOPT_COOKIEJAR curl_setopt()参数才能开始。你也可以谷歌pretty straightforward examples以及。

Answer 2

这是entiree类，如果你有问题，我可以更好地解释你。

<?php 

/** 
* Description of class-curl 
* 
* @author NEO 
*/ 
class cURL { 

    public $headers; 
    public $user_agent; 
    public $compression; 
    public $cookie_file; 
    public $proxy; 
    public $process; 
    public $url; 
    public $hash; 
    public $content; 

    public function __construct($url) { 
     $this->url = $url; 
     $this->process = curl_init($this->url); 
     $cookiename = uniqid('cookie_') . '.txt'; 
     $this->cURL($cookies = TRUE, $cookiename); 
    } 

    public function cURL($cookies = TRUE, $cookie = 'cookie.txt', $compression = 'gzip', $proxy = '') { 
     $this->headers[] = 'Accept: image/gif, image/x-bitmap, image/jpeg, image/pjpeg'; 
     $this->headers[] = 'Connection: Keep-Alive'; 
     $this->headers[] = 'Content-type: application/x-www-form-urlencoded;charset=UTF-8'; 
     $this->user_agent = 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0)'; 
     $this->compression = $compression; 
     $this->proxy = $proxy; 
     $this->cookies = $cookies; 
     if ($this->cookies == TRUE) 
      $this->cookie($cookie); 
    } 

    public function cookie($cookie_file) { 
     if (file_exists($cookie_file)) { 
      $this->cookie_file = $cookie_file; 
     } else { 
      fopen($cookie_file, 'w') or $this->error('The cookie file could not be opened. Make sure this directory has the correct permissions'); 
      $this->cookie_file = $cookie_file; 
      @fclose($this->cookie_file); 
     } 
    } 

    //Capturar todo el codigo fuente de la web solicitada 
    public function get() { 
     curl_setopt($this->process, CURLOPT_HTTPHEADER, $this->headers); 
     curl_setopt($this->process, CURLOPT_HEADER, 0); 
     curl_setopt($this->process, CURLOPT_USERAGENT, $this->user_agent); 
     if ($this->cookies == TRUE) { 
      curl_setopt($this->process, CURLOPT_COOKIEFILE, $this->cookie_file); 
      curl_setopt($this->process, CURLOPT_COOKIEJAR, $this->cookie_file); 
     } 
     curl_setopt($this->process, CURLOPT_ENCODING, $this->compression); 
     curl_setopt($this->process, CURLOPT_TIMEOUT, 90); 
     if ($this->proxy) 
      curl_setopt($this->process, CURLOPT_PROXY, $this->proxy); 
     curl_setopt($this->process, CURLOPT_RETURNTRANSFER, 1); 
     //curl_setopt($this->process, CURLOPT_FOLLOWLOCATION, 1); 
     $return = curl_exec($this->process); 
     //curl_close($this->process); 
     return $return; 
    } 

    public function post($data) { 
     curl_setopt($this->process, CURLOPT_HTTPHEADER, $this->headers); 
     curl_setopt($this->process, CURLOPT_HEADER, 1); 
     curl_setopt($this->process, CURLOPT_USERAGENT, $this->user_agent); 
     if ($this->cookies == TRUE) 
      curl_setopt($this->process, CURLOPT_COOKIEFILE, $this->cookie_file); 
     if ($this->cookies == TRUE) 
      curl_setopt($this->process, CURLOPT_COOKIEJAR, $this->cookie_file); 
     curl_setopt($this->process, CURLOPT_ENCODING, $this->compression); 
     curl_setopt($this->process, CURLOPT_TIMEOUT, 30); 
     if ($this->proxy) 
      curl_setopt($this->process, CURLOPT_PROXY, $this->proxy); 
     curl_setopt($this->process, CURLOPT_POSTFIELDS, $data); 
     curl_setopt($this->process, CURLOPT_RETURNTRANSFER, 1); 
     //curl_setopt($this->process, CURLOPT_FOLLOWLOCATION, 1); 
     curl_setopt($this->process, CURLOPT_POST, 1); 
     $return = curl_exec($this->process); 
     //curl_close($this->process); 
     return $return; 
    } 

    public function error($error) { 
     echo "<center><div style='width:500px;border: 3px solid #FFEEFF; padding: 3px; background-color: #FFDDFF;font-family: verdana; font-size: 10px'><b>cURL Error</b><br>$error</div></center>"; 
     die; 
    } 

    public function grab_image() { 
     //obener una imagen desde la url especificada, se puede mejorar para que 
     //se le de una url y me mande todas las imagenes que encuentre 
     curl_setopt($this->process, CURLOPT_HEADER, 0); 
     curl_setopt($this->process, CURLOPT_RETURNTRANSFER, 1); 
     curl_setopt($this->process, CURLOPT_BINARYTRANSFER, 1); 
     $raw = curl_exec($this->process); 
     $name = explode("/", $this->url); 
     $name = array_pop($name); 
     if (file_exists($name)) { 
      unlink($name); 
     } 
     $fp = fopen($name, 'x'); 
     fwrite($fp, $raw); 
     fclose($fp); 
     return $name; 
     //return $raw; 
    } 

    public function cURLclose() { 
     unlink($this->cookie_file); 
     curl_close($this->process); 
     unset($this); 
    } 

    public function saveCaptcha($source) { 
     preg_match('/ipt" src="(h[^"]+)/', $source, $result); 
     $captcha = $this->get($result[1]); 
      $ch = curl_init(); 
      curl_setopt($ch, CURLOPT_URL, $result[1]); 
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
      $captcha = curl_exec($ch); 
      curl_close($ch); 
     $hash = explode("challenge :", $captcha); 
     $hash1 = explode("'", $hash[1]); 
     $cont = $hash1[1]; 
     $img = 'http://www.google.com/recaptcha/api/image?c=' . $cont; 
      $ch = curl_init($img); 
      curl_setopt($ch, CURLOPT_HEADER, 0); 
      curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
      curl_setopt($ch, CURLOPT_BINARYTRANSFER,1); 
      $rawdata=curl_exec($ch); 
      curl_close($ch); 
      $name = uniqid('captcha_'); 
      $fp = fopen("$name.jpg",'w'); 
      fwrite($fp, $rawdata); 
      fclose($fp); 
     //ese cont hay que guardarlo en BD y generar otro para la imagen 
     //$picturename = $this->grab_image1($img); 
     $picturename = $name.".jpg"; 
     $picture = array('name' => $picturename, 'hash' => $cont); 
     return $picture; 
    } 
} 

?> 

所以你只能做这样的判断卷曲类：

include 'class-Curl.php'; 

//Pedir un nuevo captcha con una nueva cookie 
$url = 'http://lok.myvnc.com/insertar-anuncio.html'; 
//Crear el objeto Curl 
$captcha = new cURL($url); 
//Capturar el codigo funte de la pagina 
$source = $captcha->get(); 
//Parsear el codigo javascripts del captcha y bajarla al disco 
$captchaimg = $captcha->saveCaptcha($source); 
//Guardar en Base de Datos las variables ID, picturename, picturehash, cookie 


var_dump($captchaimg); 
?> 
<IMG src="<?php echo $_SERVER['DOCUMENT_ROOT']."/sms/".$captchaimg['name'] ?>">