Üyelik Tarihi: 08.04.2006
Yer: İstanbul
Mesaj: 136
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Trackback(Geri-İzleme) Mantığı Nedir?
Arkadaşlar Wordpress ile haşır neşir olan ya da bloglar ile ilgili olan varsa biraz bilirler. Mesela bir konu açıyorum ve trackback adresi oluşturuluyor.
Bende kendi kodladığım bloğumda kullanmak istiyorum bu özelliği.
www.siteadi.com/php-sitemap-yapimi/ sayfamız olsun diyelim
www.siteadi.com/php-sitemap-yapimi/trackback de trackback (geri-izleme)sayfamızın linki olsun.
Eğer birisi bizim trackback adresimizi kendi sitesinde yayınlarsa, bizim www.siteadi.com/php-sitemap-yapimi/ adresli konumuzda ufak bir geri-izleme linki beliriyor.
Mesela XXXX.com da bu konudan bahsedilmiş gibi. Bununla alakalı bir class da buldum ama hala da anlamadım açıkçası.
Link: http://phptrackback.sourceforge.net/
Kodları buraya koyayım belki indirmek istemeyen olabilir:
<?PHP
/**
* PHP Class to handle TrackBacks (send/ping, receive, retreive, detect, seed, etc...)
*
* <code><?PHP
* include('trackback_cls.PHP');
* $trackback = new Trackback('BLOGish', 'Ran Aroussi', 'UTF-8');
* ?></code>
*
* ==============================================================================
*
* @version $Id: trackback_cls.PHP,v 1.2 2004/12/11 18:54:32 Ran Exp $
* @copyright Copyright (c) 2004 Ran Aroussi (http://www.blogish.org)
* @author Ran Aroussi <ran@blogish.org>
* @license http://opensource.org/licenses/gpl-license.PHP GNU General Public License (GPL)
*
* ==============================================================================
*/
/**
* Trackback - The main class
*
* @param string $blog_name
* @param string $author
* @param string $encoding
*/
class Trackback {
var $blog_name = ''; // Default blog name used throughout the class (ie. BLOGish)
var $author = ''; // Default author name used throughout the class (ie. Ran Aroussi)
var $encoding = ''; // Default encoding used throughout the class (ie. UTF-8)
var $get_id = ''; // Retreives and holds $_GET['id'] (if not empty)
var $post_id = ''; // Retreives and holds $_POST['id'] (if not empty)
var $url = ''; // Retreives and holds $_POST['url'] (if not empty)
var $title = ''; // Retreives and holds $_POST['title'] (if not empty)
var $expert = ''; // Retreives and holds $_POST['expert'] (if not empty)
/**
* Class Constructure
*
* @param string $blog_name
* @param string $author
* @param string $encoding
* @return
*/
function Trackback($blog_name, $author, $encoding = "UTF-8")
{
$this->blog_name = $blog_name;
$this->author = $author;
$this->encoding = $encoding;
// Gather $_POST information
if (isset($_GET['id'])) {
$this->get_id = $HTTP_GET_VARS['id'];
}
if (isset($_POST['id'])) {
$this->post_id = $HTTP_POST_VARS['id'];
}
if (isset($_POST['url'])) {
$this->url = $HTTP_POST_VARS['url'];
}
if (isset($_POST['title'])) {
$this->title = $HTTP_POST_VARS['url'];
}
if (isset($_POST['expert'])) {
$this->expert = $HTTP_POST_VARS['expert'];
}
}
/**
* Sends a trackback ping to a specified trackback URL.
* allowing clients to auto-discover the TrackBack Ping URL.
*
* <code><?PHP
* include('trackback_cls.PHP');
* $trackback = new Trackback('BLOGish', 'Ran Aroussi', 'UTF-8');
* if ($trackback->ping('http://tracked-blog.com', 'http://your-url.com', 'Your entry title')) {
* echo "Trackback sent successfully...";
* } else {
* echo "Error sending trackback....";
* }
* ?></code>
*
* @param string $tb
* @param string $url
* @param string $title
* @param string $excerpt
* @return boolean
*/
function ping($tb, $url, $title = "", $excerpt = "")
{
$response = "";
$reason = "";
// Set default values
if (empty($title)) {
$title = "Trackbacking your entry...";
}
if (empty($excerpt)) {
$excerpt = "I found your entry interesting do I've added a Trackback to it on my weblog :)";
}
// Parse the target
$target = parse_url($tb);
if ((isset($target["query"])) && ($target["query"] != "")) {
$target["query"] = "?" . $target["query"];
} else {
$target["query"] = "";
}
if ((isset($target["port"]) && !is_numeric($target["port"])) || (!isset($target["port"]))) {
$target["port"] = 80;
}
// Open the socket
$tb_sock = fsockopen($target["host"], $target["port"]);
// Something didn't work out, return
if (!is_resource($tb_sock)) {
return '$trackback->ping: can\'t connect to: ' . $tb . '.';
exit;
}
// Put together the things we want to send
$tb_send = "url=" . rawurlencode($url) . "&title=" . rawurlencode($title) . "&blog_name=" . rawurlencode($this->blog_name) . "&excerpt=" . rawurlencode($excerpt);
// Send the trackback
fputs($tb_sock, "POST " . $target["path"] . $target["query"] . " HTTP/1.1\r\n");
fputs($tb_sock, "Host: " . $target["host"] . "\r\n");
fputs($tb_sock, "Content-type: application/x-www-form-urlencoded\r\n");
fputs($tb_sock, "Content-length: " . strlen($tb_send) . "\r\n");
fputs($tb_sock, "Connection: close\r\n\r\n");
fputs($tb_sock, $tb_send);
// Gather result
while (!feof($tb_sock)) {
$response .= fgets($tb_sock, 128);
}
// Close socket
fclose($tb_sock);
// Did the trackback ping work
strpos($response, '<error>0</error>') ? $return = true : $return = false;
// send result
return $return;
}
/**
* Produces XML response for trackbackers with ok/error message.
*
* <code><?PHP
* // Set page header to XML
* header('Content-Type: text/XML'); // MUST be the 1st line
* //
* // Instantiate the class
* //
* include('trackback_cls.PHP');
* $trackback = new Trackback('BLOGish', 'Ran Aroussi', 'UTF-8');
* //
* // Get trackback information
* //
* $tb_id = $trackback->post_id; // The id of the item being trackbacked
* $tb_url = $trackback->url; // The URL from which we got the trackback
* $tb_title = $trackback->title; // Subject/title send by trackback
* $tb_expert = $trackback->expert; // Short text send by trackback
* //
* // Do whatever to log the trackback (save in DB, flatfile, etc...)
* //
* if (TRACKBACK_LOGGED_SUCCESSFULLY) {
* // Logged successfully...
* echo $trackback->recieve(true);
* } else {
* // Something went wrong...
* echo $trackback->recieve(false, 'Explain why you return error');
* }
* ?></code>
*
* @param boolean $success
* @param string $err_response
* @return boolean
*/
function recieve($success = false, $err_response = "")
{
// Default error response in case of problems...
if (!$success && empty($err_response)) {
$err_response = "An error occured while tring to log your trackback...";
}
// Start response to trackbacker...
$return = '<?XML version="1.0" encoding="' . $this->encoding . '"?>' . "\n";
$return .= "<response> \n";
// Send back response...
if ($success) {
// Trackback received successfully...
$return .= " <error>0</error> \n";
} else {
// Something went wrong...
$return .= " <error>1</error> \n";
$return .= " <message>" . $this->xml_safe($err_response) . "</message>\n";
}
// End response to trackbacker...
$return .= "</response>";
return $return;
}
/**
* Feteched trackback information and produces an RSS-0.91 feed.
*
* <code><?PHP
* // 1
* header('Content-Type: text/XML'); // MUST be the 1st line
* // 2
* include('trackback_cls.PHP');
* $trackback = new Trackback('BLOGish', 'Ran Aroussi', 'UTF-8');
* // 3
* $tb_id = $trackback->get_id;
* // 4
* Do whatever to get trackback information by ID (search db, etc...)
* if (GOT_TRACKBACK_INFO) {
* // Successful - pass trackback info as array()...
* $tb_info = array('title' => string TRACKBACK_TITLE,
* 'expert' => string TRACKBACK_EXPERT,
* 'permalink' => string PERMALINK_URL,
* 'trackback' => string TRACKBACK_URL
* );
* echo $trackback->fetch(true, $tb_info);
* } else {
* // Something went wrong - tell my why...
* echo $trackback->fetch(false, string RESPONSE);
* }
* ?></code>
*
* @param boolean $success
* @param string $response
* @return string XML response to the caller
*/
function fetch($success = false, $response = "")
{
if (!$success && empty($response)) {
$response = "An error occured while tring to retreive trackback information...";
}
// Start response to caller
$return = '<?XML version="1.0" encoding="' . $this->encoding . '"?>' . "\n";
$return .= "<response> \n";
// Send back response...
if ($success) {
// Trackback retreived successfully...
// Sending back an RSS (0.91) - trackback information from $response (array)...
$return .= " <error>0</error> \n";
$return .= " <RSS version=\"0.91\"> \n";
$return .= " <channel> \n";
$return .= " <title>" . $this->xml_safe($response['title']) . "</title> \n";
$return .= " <link>" . $this->xml_safe($response['trackback']) . "</link> \n";
$return .= " <description>" . $this->xml_safe($response['expert']) . "</description> \n";
$return .= " <item> \n";
$return .= " <title>" . $this->xml_safe($response['title']) . "</title> \n";
$return .= " <link>" . $this->xml_safe($response['permalink']) . "</link> \n";
$return .= " <description>" . $this->xml_safe($response['expert']) . "</description> \n";
$return .= " </item> \n";
$return .= " </channel> \n";
$return .= " </RSS> \n";
} else {
// Something went wrong - provide reason from $response (string)...
$return .= " <error>1</error> \n";
$return .= " <message>" . $this->xml_safe($response) . "</message>\n";
}
// End response to trackbacker
$return .= "</response>";
return $return;
}
/**
* Produces embedded RDF representing metadata about the entry,
* allowing clients to auto-discover the TrackBack Ping URL.
*
* NOTE: DATE should be string in RFC822 Format - Use RFC822_from_datetime().
*
* <code><?PHP
* include('trackback_cls.PHP');
* $trackback = new Trackback('BLOGish', 'Ran Aroussi', 'UTF-8');
*
* echo $trackback->rdf_autodiscover(string DATE, string TITLE, string EXPERT, string PERMALINK, string TRACKBACK [, string AUTHOR]);
* ?></code>
*
* @param string $RFC822_date
* @param string $title
* @param string $expert
* @param string $permalink
* @param string $trackback
* @param string $author
* @return string
*/
function rdf_autodiscover($RFC822_date, $title, $expert, $permalink, $trackback, $author = "")
{
if (!$author) {
$author = $this->author;
}
$return = "<!-- \n";
$return .= "<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\" \n";
$return .= " xmlns:dc=\"http://purl.org/dc/elements/1.1/\" \n";
$return .= " xmlns:trackback=\"http://madskills.com/public/XML/RSS/module/trackback/\"> \n";
$return .= "<rdf:Description \n";
$return .= " rdf:about=\"" . $this->xml_safe($permalink) . "\" \n";
$return .= " dc:identifier=\"" . $this->xml_safe($permalink) . "\" \n";
$return .= " trackback:ping=\"" . $this->xml_safe($trackback) . "\" \n";
$return .= " dc:title=\"" . $this->xml_safe($title) . "\" \n";
$return .= " dc:subject=\"TrackBack\" \n";
$return .= " dc:description=\"" . $this->xml_safe($this->cut_short($expert)) . "\" \n";
$return .= " dc:creator=\"" . $this->xml_safe($author) . "\" \n";
$return .= " dc:date=\"" . $RFC822_date . "\" /> \n";
$return .= "</rdf:RDF> \n";
$return .= "--> \n";
return $return;
}
/**
* Search text for links, and searches links for trackback URLs.
*
* <code><?PHP
*
* include('trackback_cls.PHP');
* $trackback = new Trackback('BLOGish', 'Ran Aroussi', 'UTF-8');
*
* if ($tb_array = $trackback->auto_discovery(string TEXT)) {
* // Found trackbacks in TEXT. Looping...
* foreach($tb_array as $tb_key => $tb_url) {
* // Attempt to ping each one...
* if ($trackback->ping($tb_url, string URL, [string TITLE], [string EXPERT])) {
* // Successful ping...
* echo "Trackback sent to <i>$tb_url</i>...\n";
* } else {
* // Error pinging...
* echo "Trackback to <i>$tb_url</i> failed....\n";
* }
* }
* } else {
* // No trackbacks in TEXT...
* echo "No trackbacks were auto-discover...\n"
* }
* ?></code>
*
* @param string $text
* @return array Trackback URLs.
*/
function auto_discovery($text)
{
// Get a list of UNIQUE links from text...
// ---------------------------------------
// RegExp to look for (0=>link, 4=>host in 'replace')
$reg_exp = "/(http)+(s)?:(\\/\\/)((\\w|\\.)+)(\\/)?(\\S+)?/i";
// Make sure each link ends with [sapce]
$text = eregi_replace("www.", "http://www.", $text);
$text = eregi_replace("http://http://", "http://", $text);
$text = eregi_replace("\"", " \"", $text);
$text = eregi_replace("'", " '", $text);
$text = eregi_replace(">", " >", $text);
// Create an array with unique links
$uri_array = array();
if (preg_match_all($reg_exp, strip_tags($text, "<a>"), $array, PREG_PATTERN_ORDER)) {
foreach($array[0] as $key => $link) {
foreach((array(",", ".", ":", ";")) as $t_key => $t_value) {
$link = trim($link, $t_value);
}
$uri_array[] = ($link);
}
$uri_array = array_unique($uri_array);
}
// Get the trackback URIs from those links...
// ------------------------------------------
// Loop through the URIs array and extract RDF segments
$rdf_array = array(); // <- holds list of RDF segments
foreach($uri_array as $key => $link) {
if ($link_content = implode("", @file($link))) {
preg_match_all('/(<rdf:RDF.*?<\/rdf:RDF>)/sm', $link_content, $link_rdf, PREG_SET_ORDER);
for ($i = 0; $i < count($link_rdf); $i++) {
if (preg_match('|dc:identifier="' . preg_quote($link) . '"|ms', $link_rdf[$i][1])) {
$rdf_array[] = trim($link_rdf[$i][1]);
}
}
}
}
// Loop through the RDFs array and extract trackback URIs
$tb_array = array(); // <- holds list of trackback URIs
if (!empty($rdf_array)) {
for ($i = 0; $i < count($rdf_array); $i++) {
if (preg_match('/trackback:ping="([^"]+)"/', $rdf_array[$i], $array)) {
$tb_array[] = trim($array[1]);
}
}
}
// Return Trackbacks
return $tb_array;
}
/**
* Other Useful functions used in this class
*/
/**
* Converts MySQL datetime to a standart RFC 822 date format
*
* @param string $datetime
* @return string RFC 822 date
*/
function RFC822_from_datetime($datetime)
{
$timestamp = mktime(
substr($datetime, 8, 2), substr($datetime, 10, 2), substr($datetime, 12, 2),
substr($datetime, 4, 2), substr($datetime, 6, 2), substr($datetime, 0, 4)
);
return date("r", $timestamp);
}
/**
* Converts a string into an XML-safe string (replaces &, <, >, " and ')
*
* @param string $string
* @return string
*/
function xml_safe($string)
{
return htmlspecialchars($string, ENT_QUOTES);
}
/**
* Cuts a string short (with "...") accroding to $max_length...
*
* @param string $string
* @param integer $max_length
* @return string
*/
function cut_short($string, $max_length = 255)
{
if (strlen($string) > $max_length) {
$string = substr($string, 0, $max_length) . '...';
}
return $string;
}
}
?>
edit: üzgünüm yanlış yere açmışım moderarör arkadaş PHP bölümüne alırsa sevinirim.
Mesaj ysfozy tarafından 30.12.2007 (10:36) yeniden düzenlendi..
Açıklama: Yanlış yere konu!
|
30.12.2007
Zoque'a hoşgeldiniz!
