本文实例讲述了php实现专业获取网站SEO信息类。具体如下：
这个seo类的功能包括：
- 检查指定的网站响应
- 获取从该网站主页的语言和其他meta标签数据的
- 获取网站的导入链接，从Alexa的流量排名
- 获取网站的导入链接，由谷歌索引的网页数量
- 获取网站的信任，从WOT排名。
- 获取，因为它是第一个注册的网站域名年龄
- 获取的Twitter网站页面的数量
- 获取的Facebook链接的网站页面
- 获取网站谷歌网页速度等级
- 获取网站的谷歌网页排名
<?php
/**
*
* SEO report for different metrics
*
* @category SEO
* @author Chema <chema@garridodiaz.com>
* @copyright (c) 2009-2012 Open Classifieds Team
* @license GPL v3
* Based on seo report script http://www.phpeasycode.com && PHP class SEOstats
*
*/
class seoreport{
/**
*
* check if a url is online/alive
* @param string $url
* @return bool
*/
public static function is_alive($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADERFUNCTION, 'curlHeaderCallback');
curl_setopt($ch, CURLOPT_FAILONERROR, 1);
curl_exec ($ch);
$int_return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close ($ch);
if ($int_return_code != 200 && $int_return_code != 302 && $int_return_code != 304)
{
return FALSE;
}
else return TRUE;
}
/**
* HTTP GET request with curl.
*
* @param string $url String, containing the URL to curl.
* @return string Returns string, containing the curl result.
*
*/
protected static function get_html($url)
{
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,5);
curl_setopt($ch,CURLOPT_FOLLOWLOCATION,1);
curl_setopt($ch,CURLOPT_MAXREDIRS,2);
if(strtolower(parse_url($url, PHP_URL_SCHEME)) == 'https')
{
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,1);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,1);
}
$str = curl_exec($ch);
curl_close($ch);
return ($str)?$str:FALSE;
}
/**
*
* get the domain from any URL
* @param string $url
*/
public static function domain_name($url)
{
$nowww = ereg_replace('www\.','',$url);
$domain = parse_url($nowww);
if(!empty($domain["host"]))
return $domain["host"];
else
return $domain["path"];
}
/**
*
* get the metas from a url and the language of the site
* @param string $url
* @return array
*/
public static function meta_info($url)
{
//doesn't work at mediatemple
/*$html = new DOMDocument();
if(!$html->loadHtmlFile($url))
return FALSE;*/
if (!$html_content = self::get_html($url))
return FALSE;
$html = new DOMDocument();
$html->loadHtml($html_content);
$xpath = new DOMXPath( $html );
$url_info = array();
$langs = $xpath->query( '//html' );
foreach ($langs as $lang)
{
$url_info['language'] = $lang->getAttribute('lang');
}
$metas = $xpath->query( '//meta' );
foreach ($metas as $meta)
{
if ($meta->getAttribute('name'))
{
$url_info[$meta->getAttribute('name')] = $meta->getAttribute('content');
}
}
return $url_info;
}
/**
*
* Alexa rank
* @param string $url
* @return integer
*/
public static function alexa_rank($url)
{
$domain = self::domain_name($url);
$request = "http://data.alexa.com/data?cli=10&dat=s&url=" . $domain;
$data = self::get_html($request);
preg_match('/<POPULARITY URL="(.*?)" TEXT="([\d]+)"\/>/si', $data, $p);
return ($l[2]) ? $l[2] : NULL;
}
/**
*
* Alexa inbounds link
* @param string $url
* @return integer
*/
public static function alexa_links($url)
{
$domain = self::domain_name($url);
$request = "http://data.alexa.com/data?cli=10&dat=s&url=" . $domain;
$data = self::get_html($request);
preg_match('/<LINKSIN NUM="([\d]+)"\/>/si', $data, $l);
return ($l[1]) ? $l[1] : NULL;
}
/**
* Returns total amount of results for any Google search,
* requesting the deprecated Websearch API.
*
* @param string $query String, containing the search query.
* @return integer Returns a total count.
*/
public static function google_pages($url)
{
//$query = self::domain_name($url);
$url = 'http://ajax.googleapis.com/ajax/services/search/web?v=1.0&rsz=1&q='.$url;
$str = self::get_html($url);
$data = json_decode($str);
return (!isset($data->responseData->cursor->estimatedResultCount))
? '0'
: intval($data->responseData->cursor->estimatedResultCount);
}
/**
*
* gets the inbounds links from a site
* @param string $url
* @param integer
*/
public static function google_links($url)
{
$request = "http://www.google.com/search?q=" . urlencode("link:" . $url) . "&hl=en";
$data = self::get_html($request);
preg_match('/<p id=resultStats>(About )?([\d,]+) result/si', $data, $l);
return ($l[2]) ? $l[2] : NULL;
}
/**
*
* web of trust rating
* @param string $url
* @reutn integer
*/
public static function WOT_rating($url)
{
$domain = self::domain_name($url);
$request = "http://api.mywot.com/0.4/public_query2?target=" . $domain;
$data = self::get_html($request);
preg_match_all('/<application name="(\d+)" r="(\d+)" c="(\d+)"\/>/si', $data, $regs);
$trustworthiness = ($regs[2][0]) ? $regs[2][0] : NULL;
return (is_numeric($trustworthiness))? $trustworthiness:NULL;
}
/**
*
* how old is the domain?
* @param string $domain
* @return integer unixtime
*/
public static function domain_age($domain)
{
$request = "http://reports.internic.net/cgi/whois?whois_nic=" . $domain . "&type=domain";
$data = self::get_html($request);
preg_match('/Creation Date: ([a-z0-9-]+)/si', $data, $p);
return (!$p[1])?FALSE:strtotime($p[1]);
}
/**
*
* counts how many tweets about the url
* @param string $url
* @return integer
*/
public static function tweet_count($url)
{
$url = urlencode($url);
$twitterEndpoint = "http://urls.api.twitter.com/1/urls/count.json?url=%s";
$fileData = file_get_contents(sprintf($twitterEndpoint, $url));
$json = json_decode($fileData, true);
unset($fileData); // free memory
return (is_numeric($json['count']))? $json['count']:NULL;
}
/**
* Returns the total amount of Facebook Shares for a single page
*
* @link https://graph.facebook.com/
* @param string The URL to check.
* @return integer Returns the total amount of Facebook
*/
public static function facebook_shares($q)
{
//Execution and result of Json
$str = self::get_html('http://graph.facebook.com/?id='.urlencode($q));
$data = json_decode($str);
//Return only number of facebook shares
$r = $data->shares;
return ($r != NULL) ? $r : intval('0');
}
/**
*
* get the pagespeed rank over 100
* @param string $url
* @return integer
*/
public static function page_speed($url)
{
$url = 'https://developers.google.com/_apps/pagespeed/run_pagespeed?url='.$url.'&format=json';
$str = self::get_html($url);
$data = json_decode($str);
return intval($data->results->score);
}
/**
*
* get google page rank
* @param string $url
* @return integer
*/
public static function page_rank($url)
{
$query = "http://toolbarqueries.google.com/tbr?client=navclient-auto&ch=".self::CheckHash(self::HashURL($url)). "&features=Rank&q=info:".$url."&num=100&filter=0";
$data = self::get_html($query);//die(print_r($data));
$pos = strpos($data, "Rank_");
if($pos === false)
{
return NULL;
}
else
{
$pagerank = substr($data, $pos + 9);
return $pagerank;
}
}
// functions for google pagerank
/**
* To calculate PR functions
*/
public static function StrToNum($Str, $Check, $Magic)
{
$Int32Unit = 4294967296; // 2^32
$length = strlen($Str);
for ($i = 0; $i < $length; $i++) {
$Check *= $Magic;
//If the float is beyond the boundaries of integer (usually +/- 2.15e+9 = 2^31),
// the result of converting to integer is undefined
// refer to http://www.php.net/manual/en/language.types.integer.php
if ($Check >= $Int32Unit) {
$Check = ($Check - $Int32Unit * (int) ($Check / $Int32Unit));
//if the check less than -2^31
$Check = ($Check < -2147483648) ? ($Check + $Int32Unit) : $Check;
}
$Check += ord($Str{$i});
}
return $Check;
}
/**
* Genearate a hash for a url
*/
public static function HashURL($String)
{
$Check1 = self::StrToNum($String, 0x1505, 0x21);
$Check2 = self::StrToNum($String, 0, 0x1003F);
$Check1 >>= 2;
$Check1 = (($Check1 >> 4) & 0x3FFFFC0 ) | ($Check1 & 0x3F);
$Check1 = (($Check1 >> 4) & 0x3FFC00 ) | ($Check1 & 0x3FF);
$Check1 = (($Check1 >> 4) & 0x3C000 ) | ($Check1 & 0x3FFF);
$T1 = (((($Check1 & 0x3C0) << 4) | ($Check1 & 0x3C)) <<2 ) | ($Check2 & 0xF0F );
$T2 = (((($Check1 & 0xFFFFC000) << 4) | ($Check1 & 0x3C00)) << 0xA) | ($Check2 & 0xF0F0000 );
return ($T1 | $T2);
}
/**
* genearate a checksum for the hash string
*/
public static function CheckHash($Hashnum)
{
$CheckByte = 0;
$Flag = 0;
$HashStr = sprintf('%u', $Hashnum) ;
$length = strlen($HashStr);
for ($i = $length - 1; $i >= 0; $i --) {
$Re = $HashStr{$i};
if (1 === ($Flag % 2)) {
$Re += $Re;
$Re = (int)($Re / 10) + ($Re % 10);
}
$CheckByte += $Re;
$Flag ++;
}
$CheckByte %= 10;
if (0 !== $CheckByte) {
$CheckByte = 10 - $CheckByte;
if (1 === ($Flag % 2) ) {
if (1 === ($CheckByte % 2)) {
$CheckByte += 9;
}
$CheckByte >>= 1;
}
}
return '7'.$CheckByte.$HashStr;
}
}使用范例
<?php
include 'seoreport.php';
ini_set('max_execution_time', 180);
$url = (isset($_GET['url']))?$_GET['url']:'http://phpclasses.org';
$meta_tags = seoreport::meta_info($url);
//die(var_dump($meta_tags));
//first check if site online
if ($meta_tags!==FALSE)
{
$stats = array();
$stats['meta'] = $meta_tags;
$stats['alexa']['rank'] = seoreport::alexa_rank($url);
$stats['alexa']['links'] = seoreport::alexa_links($url);
$stats['domain']['WOT_rating'] = seoreport::WOT_rating($url);
$stats['domain']['domain_age'] = seoreport::domain_age($url);
$stats['social']['twitter'] = seoreport::tweet_count($url);
$stats['social']['facebook'] = seoreport::facebook_shares($url);
$stats['google']['page_rank'] = seoreport::page_rank($url);
$stats['google']['page_speed'] = seoreport::page_speed($url);
$stats['google']['pages'] = seoreport::google_pages($url);
$stats['google']['links'] = seoreport::google_links($url);
var_dump($stats);
}
else 'Site not online. '.$url;总结：以上就是本篇文的全部内容，希望能对大家的学习有所帮助。
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