记录与PHP的PK经历

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本文链接: php查询alexa排名的代码

   1: <?PHP

   2: /*

   3: update: askie 

   4: Homepage: http://www.pkphp.com

   5: email: askie@sohu.com

   6: */

   7: class Alexa 

   8: {

   9: private $badclasses;

  10: private $site;

  11: private $cache;

  12:  

  13: function alexa() 

  14: {

  15: preg_match_all('#\.([a-z0-9]+) \{#i',file_get_contents('http://client.alexa.com/common/css/scramble.css'),$this->badclasses); 

  16: }

  17: private function descramble ($matches) {

  18: return in_array($matches[1],$this->badclasses[1])?'':$matches[2];

  19: }

  20: public function stats ($site, $section = 4, $item = 5) 

  21: {

  22: if (!is_array($this->cache[$site])) {

  23: $items = array();

  24: $html = preg_replace('# #','',preg_replace('#(?:<|<)!--.+?--(?:>|>)#','',file_get_contents('http://www.alexa.com/data/details/traffic_details/' . $site)));

  25: preg_match_all('#

  26:  

  27: .+? 

  28: #',$html,$tables);

  29:  

  30: for ($i=0,$len=count($tables[0]); $i<$len; $i++) {

  31: preg_match_all('#

  32:  

  33: (.+?) 

  34: #',$tables[0][$i],$info);

  35: for ($i2=0,$len2=count($info[1]); $i2<$len2; $i2++) {

  36: $info[1][$i2] = preg_replace('##','$1 ',$info[1][$i2]);

  37: $items[$i][] = preg_replace_callback('#(.+?)#im',array(get_class($this), 'descramble'),$info[1][$i2]);

  38: }

  39: }

  40: $this->cache[$site] = $items;

  41: }

  42: if ($section == 4 && $item == 5) {

  43: return $this->cache[$site];

  44: } elseif ($item == 5) {

  45: return $this->cache[$site][$section];

  46: } else {

  47: return $this->cache[$site][$section][$item];

  48: }

  49: }

  50: public function threeMothAlexa($site)

  51: {

  52: $urlinfo=parse_url($site);

  53: $site=$urlinfo["host"];

  54: $score=$this->stats($site,1);

  55: return $score[2];

  56: }

  57: }

  58: //

  59: //$alexa = new Alexa();

  60: //print_r($alexa->stats('www.pkphp.com'));

  61: //print_r($alexa->stats('www.pkphp.com',1));

  62: //print_r($alexa->stats('www.pkphp.com',1,1));

  63: //print_r($alexa->threeMothAlexa('http://www.pkphp.com/'));

  64: ?>

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