PHP get Baidu related search and original degree _php tutorial

PHP to get Baidu related search and original degree
Get the original degree is get_em_times, the higher the value the longer the text length the less original.
Search engine optimization for acquisition projects

Class Baidu {

public static function Build_request_uri ($words) {

$words = UrlEncode (text::convert_encoding ($words, gbk,utf-8));

return/s?wd=. $words;

}

public static function Get_relate_search ($words) {

$content = Self::get_content ($words);

if (Preg_match ((?!).) *)/, $content, $result)) {

if (Preg_match_all (/).) *> (. *?) /, $result [1], $result)) return $result [2];

}

return FALSE;

}

/**

* According to the space participle, get Baidu keyword exactly match the number of times

* @param string $words

* @return int

*/

public static function Get_em_times ($words) {

$word = Explode (, $words);

$content = Self::get_content ($words);

Preg_match_all (/((?!).) *)/, $content, $result);

if (!isset ($result [1]) | | count ($result [1]) ==0)

return 0;

$word _table = Array_count_values ($result [1]);

$times = 0;

foreach ($word as $pice) {

if (Array_key_exists ($pice, $word _table)) $times + = $word _table[$pice];

}

return $times;

}

public static function Get_content ($words) {

static $loaded _contents = Array ();

if (!isset ($loaded _contents[$words])) {

$content = file_get_contents ("http://www.baidu.com". Self::build_request_uri ($words));

$content = text::convert_encoding ($content, UTF-8,GBK);

$loaded _contents[$words] = $content;

}

return $loaded _contents[$words];

}

function Check_veriy ($content) {

if (Strpos ($content, "http://verify.baidu.com/")!==false) {

Baidu requires verification, exception

}

}

}

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