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PHP bot for meteo google

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This is a mini bot I’ve made for meteo that retrieves informations from italian Google servers about weather forecast of a specified city (not only italian cities).

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  1. function dayadd($days,$date=null , $format="d/m/Y"){
  2. 	//add days to a date function
  3. 	return date($format,strtotime($days." days",strtotime( $date ? $date : date($format) )));
  4. }
  5.  
  6. function attr($s,$attrname) {
  7. 	//get the attribute value of an html tag
  8. 	preg_match_all('#\s*('.$attrname.')\s*=\s*["|\']([^"\']*)["|\']\s*#i', $s, $x); 
  9. 	if (count($x)>=3) return $x[2][0];
  10. 	return "";
  11. }
  12.  
  13. function doGoogleMeteo($q,$date) {
  14. 	if ($date>dayadd(3,date("Y-m-d"),"Y-m-d"))return "";
  15.  
  16. 	// grab google page with meteo query
  17. 	$web_page = file_get_contents( "http://www.google.it/search?q=meteo+" . urlencode($q) );
  18.  
  19. 	//parse html to find data, and store them in an array
  20. 	preg_match_all('#<div class=e>(.*)</table>#Us', $web_page, $m);
  21. 	if (count($m)>0) {
  22. 		$p = array();
  23. 		preg_match_all('#<img([^>]*)?>#Us', $m[0][0], $img);
  24. 		for ($i=0;$i<count($img[0]);$i++) {
  25. 			$tag = str_replace("src=\"/","src=\"http://www.google.it/",$img[0][$i]);
  26. 			$p[dayadd($i,date("Y-m-d"),"Y-m-d")]["title"] = attr($tag,"title");
  27. 			$p[dayadd($i,date("Y-m-d"),"Y-m-d")]["img"] = attr($tag,"src");
  28. 		}
  29. 		preg_match_all('#<nobr>(.*)</nobr>#Uis', $m[0][0], $nobr);
  30. 		for ($i=0;$i<count($nobr[1]);$i++) {
  31. 			$temp= explode("|",$nobr[1][$i]);
  32. 			$p[dayadd($i,date("Y-m-d"),"Y-m-d")]["min"] = trim($temp[1]);
  33. 			$p[dayadd($i,date("Y-m-d"),"Y-m-d")]["max"] = trim($temp[0]);
  34. 		}
  35. 		return $p[$date];
  36. 	}
  37.  
  38. 	return "nada.";
  39. }
  40.  
  41. print_r ( doGoogleMeteo("milano","2009-12-25") );
  42. //Array ( 
  43. // [title] => Rovesci 
  44. // [img] => http://www.google.it/images/weather/rain.gif 
  45. // [min] => -4°C 
  46. // [max] => 7°C 
  47. //)

URL: http://www.barattalo.it/2009/12/24/php-meteo-bot-for-google/

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