本文实例讲述了php实现专业获取网站seo信息类。分享给大家供大家参考。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('/<div 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;
希望本文所述对大家的php程序设计有所帮助。
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