curl.php

<?php

class Curl {

//     public $cookie_file = 'curl_cookie.txt';
    public $headers = array();
    public $options = array();
    public $referer = '';
    public $user_agent = '';

    protected $error = '';

    public function __construct() {
        $this->user_agent = $_SERVER['HTTP_USER_AGENT'];
    }

    public function delete($url, $vars = array()) {
        return $this->request('DELETE', $url, http_build_query($vars));
    }

    public function error() {
        return $this->error;
    }

    public function get($url, $vars = array()) {
        if (!empty($vars)) {
            $url .= (stripos($url, '?') !== false) ? '&' : '?';
            $url .= http_build_query($vars);
        }
        return $this->request('GET', $url);
    }

    public function post($url, $vars = array()) {
        return $this->request('POST', $url, http_build_query($vars));
    }

    public function put($url, $vars = array()) {
        return $this->request('PUT', $url, http_build_query($vars));
    }

    protected function request($method, $url, $vars = array()) {
        $handle = curl_init();

        # Set some default CURL options
//         curl_setopt($handle, CURLOPT_COOKIEFILE, $this->cookie_file);
//         curl_setopt($handle, CURLOPT_COOKIEJAR, $this->cookie_file);
        curl_setopt($handle, CURLOPT_FOLLOWLOCATION, true);
        curl_setopt($handle, CURLOPT_HEADER, true);
        curl_setopt($handle, CURLOPT_REFERER, $this->referer);
        curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($handle, CURLOPT_URL, $url);
        curl_setopt($handle, CURLOPT_USERAGENT, $this->user_agent);
        curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, FALSE);

        # Format custom headers for this request and set CURL option
        $headers = array();
        foreach ($this->headers as $key => $value) {
            $headers[] = $key.': '.$value;
        }
        curl_setopt($handle, CURLOPT_HTTPHEADER, $headers);
        # Determine the request method and set the correct CURL option
        switch ($method) {
            case 'GET':
                curl_setopt($handle, CURLOPT_HTTPGET, true);
                break;
            case 'POST':
                curl_setopt($handle, CURLOPT_POST, true);
                break;
            default:
                curl_setopt($handle, CURLOPT_CUSTOMREQUEST, $method);
        }
        // Need to set post fields after the request method
        if (!empty($vars)) curl_setopt($handle, CURLOPT_POSTFIELDS, $vars);

        # Set any custom CURL options
        foreach ($this->options as $option => $value) {
            curl_setopt($handle, constant('CURLOPT_'.str_replace('CURLOPT_', '', strtoupper($option))), $value);
        }

        $response = curl_exec($handle);
        if ($response) {
            $response = new CurlResponse($response);
        } else {
            $this->error = curl_errno($handle).' - '.curl_error($handle);
        }
        curl_close($handle);
        return $response;
    }

}

class CurlResponse {

    public $body = '';
    public $headers = array();

    public function __construct($response) {
        # Extract headers from response
        $pattern = '#HTTP/\d\.\d.*?$.*?\r\n\r\n#ims';
        preg_match_all($pattern, $response, $matches);
        $headers = explode("\r\n", str_replace("\r\n\r\n", '', array_pop($matches[0])));
        # Extract the version and status from the first header
        $version_and_status = array_shift($headers);
        preg_match('#HTTP/(\d\.\d)\s(\d\d\d)\s(.*)#', $version_and_status, $matches);
        $this->headers['Http-Version'] = $matches[1];
        $this->headers['Status-Code'] = $matches[2];
        $this->headers['Status'] = $matches[2].' '.$matches[3];

        # Convert headers into an associative array
        foreach ($headers as $header) {
            preg_match('#(.*?)\:\s(.*)#', $header, $matches);
            $this->headers[$matches[1]] = $matches[2];
        }

        # Remove the headers from the response body
        $this->body = preg_replace($pattern, '', $response);
    }

    public function __toString() {
        return $this->body;
    }

}

?>