php获取搜索引擎关键字来源(支持百度、谷歌等搜索引擎)的函数

3. //获取来自搜索引擎入站关键词

4. //by bbs.it-home.org
5. function get_keyword($url,$kw_start)
6. {
7. $start=stripos($url,$kw_start);
8. $url=substr($url,$start+strlen($kw_start));
9. $start=stripos($url,'&');
10. if ($start>0)
11. {
12. $start=stripos($url,'&');
13. $s_s_keyword=substr($url,0,$start);
14. }
15. else
16. {
17. $s_s_keyword=substr($url,0);
18. }
19. return $s_s_keyword;
20. }

21. $url=isset($_SERVER['HTTP_REFERER'])?$_SERVER['HTTP_REFERER']:'';//获取入站url。

22. $search_1="google.com"; //q= utf8
23. $search_2="baidu.com"; //wd= gbk
24. $search_3="yahoo.cn"; //q= utf8
25. $search_4="sogou.com"; //query= gbk
26. $search_5="soso.com"; //w= gbk
27. $search_6="bing.com"; //q= utf8
28. $search_7="youdao.com"; //q= utf8

29. $google=preg_match("/\b{$search_1}\b/",$url);//记录匹配情况，用于入站判断。

30. $baidu=preg_match("/\b{$search_2}\b/",$url);
31. $yahoo=preg_match("/\b{$search_3}\b/",$url);
32. $sogou=preg_match("/\b{$search_4}\b/",$url);
33. $soso=preg_match("/\b{$search_5}\b/",$url);
34. $bing=preg_match("/\b{$search_6}\b/",$url);
35. $youdao=preg_match("/\b{$search_7}\b/",$url);
36. $s_s_keyword="";
37. $bul=$_SERVER['HTTP_REFERER'];
38. //获取没参数域名
39. preg_match('@^(?:http://)?([^/]+)@i',$bul,$matches);
40. $burl=$matches[1];
41. //匹配域名设置
42. $curl="bbs.it-home.org";
43. if($burl!=$curl){
44. if ($google)
45. {//来自google
46. $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。
47. $s_s_keyword=urldecode($s_s_keyword);
48. $urlname="谷歌：";
49. $_SESSION["urlname"]=$urlname;
50. $_SESSION["s_s_keyword"]=$s_s_keyword;
51. //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
52. }
53. else if($baidu)
54. {//来自百度
55. $s_s_keyword=get_keyword($url,'wd=');//关键词前的字符为"wd="。
56. $s_s_keyword=urldecode($s_s_keyword);
57. $s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
58. $urlname="百度：";
59. $_SESSION["urlname"]=$urlname;
60. $_SESSION["s_s_keyword"]=$s_s_keyword;
61. }
62. else if($yahoo)
63. {//来自雅虎
64. $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。
65. $s_s_keyword=urldecode($s_s_keyword);
66. //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
67. $urlname="雅虎：";
68. $_SESSION["urlname"]=$urlname;
69. $_SESSION["s_s_keyword"]=$s_s_keyword;
70. }
71. else if($sogou)
72. {//来自搜狗
73. $s_s_keyword=get_keyword($url,'query=');//关键词前的字符为"query="。
74. $s_s_keyword=urldecode($s_s_keyword);
75. $s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
76. $urlname="搜狗：";
77. $_SESSION["urlname"]=$urlname;
78. $_SESSION["s_s_keyword"]=$s_s_keyword;
79. }
80. else if($soso)
81. {//来自搜搜
82. $s_s_keyword=get_keyword($url,'w=');//关键词前的字符为"w="。
83. $s_s_keyword=urldecode($s_s_keyword);
84. $s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
85. $urlname="搜搜：";
86. $_SESSION["urlname"]=$urlname;
87. $_SESSION["s_s_keyword"]=$s_s_keyword;
88. }
89. else if($bing)
90. {//来自必应
91. $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。
92. $s_s_keyword=urldecode($s_s_keyword);
93. //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
94. $urlname="必应：";
95. $_SESSION["urlname"]=$urlname;
96. $_SESSION["s_s_keyword"]=$s_s_keyword;
97. }
98. else if($youdao)
99. {//来自有道
100. $s_s_keyword=get_keyword($url,'q=');//关键词前的字符为"q="。
101. $s_s_keyword=urldecode($s_s_keyword);
102. //$s_s_keyword=iconv("GBK","UTF-8",$s_s_keyword);//引擎为gbk
103. $urlname="有道：";
104. $_SESSION["urlname"]=$urlname;
105. $_SESSION["s_s_keyword"]=$s_s_keyword;
106. }
107. else{
108. $urlname=$burl;
109. $s_s_keyword="";
110. $_SESSION["urlname"]=$urlname;
111. $_SESSION["s_s_keyword"]=$s_s_keyword;
112. }
113. $s_urlname=$urlname;
114. $s_urlkey=$s_s_keyword;
115. }
116. else{
117. $s_urlname=$_SESSION["urlname"];
118. $s_urlkey=$_SESSION["s_s_keyword"];
119. }
120. ?>

说明：在处理时，记得处理好编码的问题，因为不同的搜索引擎，返回的结果，有的可能是GBK，有的则可能是UTF-8格式的内容。

函数2，这个也不错，大家可以试试。 代码如下：

2. //获取搜索引擎的入口关键字
3. $_SERVER['HTTP_REFERER']='http://www.baidu.com/s?wd=http://bbs.it-home.org';
4. echo save_www_iiwnet_com_keyword('http://www.baidu.com/s?wd=http://bbs.it-home.org','http://www.baidu.com/s?wd=http://bbs.it-home.org');
5. function save_www_iiwnet_com_keyword($domain,$path){
6. if(strpos($domain, 'google.com.tw')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
7. $searchengine = 'GOOGLE TAIWAN';
8. $keywords = urldecode($regs[1]); // google taiwan
9. }
10. if(strpos($domain,'google.cn')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
11. $searchengine = 'GOOGLE CHINA';
12. $keywords = urldecode($regs[1]); // google china
13. }
14. if(strpos($domain,'google.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
15. $searchengine = 'GOOGLE';
16. $keywords = urldecode($regs[1]); // google
17. }elseif(strpos($domain,'baidu.')!==false && preg_match('/wd=([^&]*)/i',$path,$regs)){
18. $searchengine = 'BAIDU';
19. $keywords = urldecode($regs[1]); // baidu
20. }elseif(strpos($domain,'baidu.')!==false && preg_match('/word=([^&]*)/i',$path,$regs)){
21. $searchengine = 'BAIDU';
22. $keywords = urldecode($regs[1]); // baidu
23. }elseif(strpos($domain,'114.vnet.cn')!== false && preg_match('/kw=([^&]*)/i',$path,$regs)){
24. $searchengine = 'CT114';
25. $keywords = urldecode($regs[1]); // ct114
26. }elseif(strpos($domain,'iask.com')!==false && preg_match('/k=([^&]*)/i',$path,$regs)){
27. $searchengine = 'IASK';
28. $keywords = urldecode($regs[1]); // iask
29. }elseif(strpos($domain,'soso.com')!==false && preg_match('/w=([^&]*)/i',$path,$regs)){
30. $searchengine = 'SOSO';
31. $keywords = urldecode($regs[1]); // soso
32. }elseif(strpos($domain, 'sogou.com')!==false && preg_match('/query=([^&]*)/i',$path,$regs)){
33. $searchengine = 'SOGOU';
34. $keywords = urldecode($regs[1]); // sogou
35. }elseif(strpos($domain,'so.163.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
36. $searchengine = 'NETEASE';
37. $keywords = urldecode($regs[1]); // netease
38. }elseif(strpos($domain,'yodao.com')!== false && preg_match('/q=([^&]*)/i',$path,$regs)){
39. $searchengine = 'YODAO';
40. $keywords = urldecode($regs[1]); // yodao
41. }elseif(strpos($domain,'zhongsou.com')!==false && preg_match('/word=([^&]*)/i',$path,$regs)){
42. $searchengine = 'ZHONGSOU';
43. $keywords = urldecode($regs[1]); // zhongsou
44. }elseif(strpos($domain,'search.tom.com')!==false && preg_match('/w=([^&]*)/i',$path,$regs)){
45. $searchengine = 'TOM';
46. $keywords = urldecode($regs[1]); // tom
47. }elseif(strpos($domain,'live.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
48. $searchengine = 'MSLIVE';
49. $keywords = urldecode($regs[1]); // MSLIVE
50. }elseif(strpos($domain, 'tw.search.yahoo.com')!==false && preg_match('/p=([^&]*)/i',$path,$regs)){
51. $searchengine = 'YAHOO TAIWAN';
52. $keywords = urldecode($regs[1]); // yahoo taiwan
53. }elseif(strpos($domain,'cn.yahoo.')!==false && preg_match('/p=([^&]*)/i',$path,$regs)){
54. $searchengine = 'YAHOO CHINA';
55. $keywords = urldecode($regs[1]); // yahoo china
56. }elseif(strpos($domain,'yahoo.')!==false && preg_match('/p=([^&]*)/i',$path,$regs)){
57. $searchengine = 'YAHOO';
58. $keywords = urldecode($regs[1]); // yahoo
59. }elseif(strpos($domain,'msn.com.tw')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
60. $searchengine = 'MSN TAIWAN';
61. $keywords = urldecode($regs[1]); // msn taiwan
62. }elseif(strpos($domain,'msn.com.cn')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
63. $searchengine = 'MSN CHINA';
64. $keywords = urldecode($regs[1]); // msn china
65. }elseif(strpos($domain,'msn.com')!==false && preg_match('/q=([^&]*)/i',$path,$regs)){
66. $searchengine = 'MSN';
67. $keywords = urldecode($regs[1]); // msn
68. }
69. return $keywords;
70. }
71. ?>