Traditional Culture Encyclopedia - Weather inquiry - How does php capture the weather forecast?
How does php capture the weather forecast?
Here is a passage for you. I have a source code for my friends in Taiwan Province Province.
& lt? Server-side programming language (abbreviation of professional hypertext preprocessor)
Title (\ "Content Type:? Text/html; ? charset = utf-8 \ ");
Function? getWeather($city){
$ TERM Toure? =? \"
$ city . htm \ ";
$post? =? array();
$ch? =? curl _ init();
$options? =? Array (
CURLOPT _ REFERER = & gt'',
CURLOPT _ URL = & gt$toURL,
CURLOPT _ VERBOSE = & gt0,
CURLOPT _ RETURNTRANSFER => Yes,
CURLOPT _ USERAGENT = & gt“Mozilla/4.0? (compatible; )\",
CURLOPT _ POST => Yes,
CURLOPT _ POSTFIELDS = & gthttp_build_query($post),
);
curl_setopt_array($ch,? $ options);
$ Results? =? curl _ exec($ ch); ?
curl _ close($ ch);
//Connect to central weather bureau.
Echo? & ltpre & gt';
preg _ match _ all('/& lt; Table? class=\"FcstBoxTable0 1\ "? 【^>; ]*[^>; ]* & gt; (.*)& lt; \/div & gt; /si ',$result,$matches,? PREG _ SET _ ORDER);
preg _ match _ all('/& lt; td? nowrap=\"nowrap\ "? 【^>; ]*[^>; ]* & gt; (.*)& lt; \/TD & gt; /si ',$matches[0][ 1],? $m 1,? PREG _ SET _ ORDER);
$m2? =? Explosion ('</TD >' ,$ m 1[0][ 1]);
//? print _ r($ m2); //Get daily data m2[0~6]
$ The weather? =? array();
for($ I = 0; $ i & lt=6; $i++){
preg_match_all('/src=[^>; ]*[^>; ](.*)/si ',$m2[$i],? $m5,? PREG _ SET _ ORDER); //Get the weather map file
$m6? =? explode('\ " ',$ M5[0][0]);
$wi= '
($m6[ 1],' \。 \./\.\./');
$wtitle? =? $ M6[3];
print _ r($ w title);
$weather[$i]['date']? =? Date (\"m-d\ ",? mktime(0,? 0,? 0,? Date (\"m\ "),? date(\"d\")+$i,date(\ " Y \ "));
$ Weather [$i][' temperature']? =? trim(strip _ tags($ m2[$ I]));
$weather[$i]['title']? =? $ wtitle
$weather[$i]['img']? =? $ wi
}
Return ($ weather);
}
$weather=getWeather(\ "Taipei _ city \")? ; ?
Print _ r($ weather);
//? header(\ " Location:loc . PHP \ ");
& gt first
$ TERM Toure? =? \ " http://www . cwb . gov . tw/V7/forecast/Taiwan/Inc/city/$ city . htm \ "; This is the website for reading information.
The above is central weather bureau, Taiwan Province Province.
preg _ match _ all('/& lt; Table? class=\"FcstBoxTable0 1\ "? 【^>; ]*[^>; ]* & gt; (.*)& lt; \/div & gt; /si ',$result,$matches,? PREG _ SET _ ORDER);
preg _ match _ all('/& lt; td? nowrap=\"nowrap\ "? 【^>; ]*[^>; ]* & gt; (.*)& lt; \/TD & gt; /si ',$matches[0][ 1],? $m 1,? PREG _ SET _ ORDER); The following is the webpage information table class = \ "fcstboxtable 01\" [>] * [> ]* & gt; (.*)& lt; \/div & gt; and
$m2? =? Explosion ('</TD >' ,$ m 1[0][ 1]);
//? print _ r($ m2); //Get daily data m2[0~6] Here is the daily data.
preg_match_all('/src=[^>; ]*[^>; ](.*)/si ',$m2[$i],? $m5,? PREG _ SET _ ORDER); //get the weather map file here is the map file to get the weather.
$m6? =? explode('\ " ',$ M5[0][0]);
$wi= '
($m6[ 1],' \。 \./\.\./');
$wtitle? =? $ M6[3];
print _ r($ w title);
$weather[$i]['date']? =? Date (\"m-d\ ",? mktime(0,? 0,? 0,? Date (\"m\ "),? date(\"d\")+$i,date(\ " Y \ "));
$ Weather [$i][' temperature']? =? trim(strip _ tags($ m2[$ I]));
$weather[$i]['title']? =? $ wtitle
$weather[$i]['img']? =? $ wi Here are the returned websites, dates, titles, drawings and files, etc.
$weather=getWeather(\ "Taipei _ city \")? ; ?
Print _ r($ weather); This is a week's weather forecast for this area.
Conclusion: If you want to intercept the weather forecast from the website.
In php, you can use preg_match_all (a table of a web page, the number of columns tr of the table, the field td of the table, or a wider tag div, etc.). )
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