01.function nGRam($str_new)
02.{
03.
04. $a = "";
05. $b = "";
06. $c = "";
07.
08. foreach ($str_new as $k => $v)
09. {
10. if (strlen($v)>0)
11. {
12. if (strlen($a)<=0) $a = $v;
13. elseif (strlen($b)<=0) $b = $v;
14. elseif (strlen($c)<=0)
15. {
16. $c = $v;
17. $triGram=$a.$b.$c;
18.
19. $sql="select * from trigram where w_one ='$a' AND w_two='$b' AND w_three='$c'";
20. $result = mysql_query($sql ) or die(mysql_error());
21.
22.
23. $row = mysql_num_rows($result);
24. if ($row>0)
25. {
26. for ($i=0; $i<$row; $i++)
27. {
28. $table = mysql_fetch_array($result);
29. $w_one = $table["w_one"];
30. $w_two =$table["w_two"];
31. $w_three = $table["w_three"];
32. $frequency_tri =$table["frequency"];
33.
34. $sr_trigram[] = $w_one.$w_two.$w_three;
35. $StrtriGram[]=$sr_trigram.':'.$frequency_tri;
36. foreach($StrtriGram as $key=>$Str_trigram)
37. {
38. $WordtriGram=$Str_trigram;
39. }
40. return$WordtriGram;
41.
42. }
43.
44. }
45.
46. $a = $b;
47. $b = $c;
48. $c = "";
49.
50. }
51. }
52. }
53.
54.}
