Dieser Beitrag ist Teil meiner Sourecode a Day-Aktion.

Eine simple nützliche Wrapper-Klasse, die den einfachen Umgang mit CURL ermöglicht. Cookies und Referer werden automatisch gespeichert.

<?php
/**
 * Simple CURL Wrapper
 *
 * @author Alexander Thiemann 
 */
class WebBrowser {
	/**
	 * saves curl session
	 *
	 * @var cURL
	 */
	private $ch = null;
	
	/**
	 * saves referer
	 *
	 * @var string
	 */
	private $ref = "";
	
	/**
	 * saves results
	 */
	public $result = "";
	
	/**
	 * init curl
	 *
	 */
	public function __construct() {
		$this->ch = curl_init();
	}
	
	/**
	 * destruct
	 *
	 */
	public function __destruct() {
		curl_close($this->ch);
	}
	
	/**
	 * post
	 *
	 * @param string $url
	 * @param string $data
	 */
	public function post($url, $data) {
		$this->result = "";
		curl_setopt($this->ch, CURLOPT_URL, $url);
		curl_setopt($this->ch, CURLOPT_POST, 1);
		curl_setopt($this->ch, CURLOPT_POSTFIELDS, $data);
		$this->refer($url);
		$this->setopts();
		ob_start();  
		$this->result = curl_exec($this->ch);
		ob_end_clean();
	}
	
	/**
	 * get
	 *
	 * @param string $url
	 */
	public function get($url) {
		$this->result = "";
		curl_setopt($this->ch, CURLOPT_URL, $url);
		$this->refer($url);
		$this->setopts();
		ob_start();  
		$this->result = curl_exec($this->ch);
		ob_end_clean();
	}
	
	/**
	 * update referer
	 *
	 * @param string $url
	 */
	private function refer($url) {
		curl_setopt ($this->ch, CURLOPT_REFERER, $this->ref);
		$this->ref = $url;
	}
	
	/**
	 * set global opts
	 *
	 */
	private function setopts() {
		curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, 1);
		curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true);
		// you may want to change this
		curl_setopt($this->ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.0; de; rv:1.9.0.9) Gecko/2009040821 Firefox/3.0.9 (.NET CLR 3.5.30729)");
		curl_setopt($this->ch, CURLOPT_COOKIEJAR, "cookie");
		curl_setopt($this->ch, CURLOPT_COOKIEFILE, "cookie");
	}
}
?>

Die Verwendung:

$browser = new WebBrowser();
// einfaches get request; Resultat in Datei speichern
$browser->get("http://google.de");
$fp = fopen("tmp.txt", "w+");
fwrite($fp, $browser->result);
fclose($fp);

// post request
$browser->post("http://localhost/post.php", "test_data=" . urlencode("asdfg"));
// response is in $browser->result