抓取最近八天天气(非利用接口,直接从网站提取)
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2022-05-22 17:46:18
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php代码
<?php /* *特别注意,第一天没有最高气温数据,第八天没有最低气温数据 *注意对数字进行过滤时不要忘记对负号进行判断 *对风力过滤时要考虑到3-5级这种格式 */ class weatherfetch{ private $f; function getNum($string) { $tmpstr = ''; $strlen = strlen($string); for($i=0; $i<$strlen; $i++) { $str=substr($string, $i, 1); $str1=trim($str); if(is_numeric($str1)){ $tmpstr.=$str1+0; } if($str1=="-"&&is_numeric(substr($string, $i-1, 1))){ $tmpstr.= $str1; } } return $tmpstr; } function __construct(){ $this->f= new SaeFetchurl(); } function getChineseNum($string){ $tmpstr = ''; $arr = array(1,2,3,4,5,6,7,8,9,0); $strlen = strlen($string); for($i=0; $i<$strlen; $i++) { $str=substr($string, $i, 1); $str1=trim($str); if( ord($str)>0xA0 ){ $tmpstr.= substr($string, $i, 3); $i = $i+2; } if(is_numeric($str1)){ $tmpstr.= $str1; } if($str1=="-"&&is_numeric(substr($string, $i-1, 1))&&is_numeric(substr($string, $i+1, 1))){ $tmpstr.= $str1; } } return $tmpstr; } function getChinese($string,$encode="GBK") { switch($encode){ case "GBK" :$codelength=2;break; case "GB2312" :$codelength=3;break; case "UTF-8" :$codelength=3;break; case "UTF-16" :$codelength=4;break; } $tmpstr = ''; $arr = array(1,2,3,4,5,6,7,8,9,0); $strlen = strlen($string); for($i=0; $i<$strlen; $i++) { $str=substr($string, $i, 1); $str1=trim($str); if( ord($str)>0xA0 ){ $tmpstr.= substr($string, $i, $codelength); $i = $i+$codelength-1; } } return $tmpstr; } function get($cityid){ $url="http://www.weather.com.cn/weather/".$cityid.".shtml"; $data=$this->f->fetch($url); $sun=explode('<div class="weatherTopright">',$data); $sun=explode("<dl>",$sun[1]); $sun=explode("</dl>",$sun[1]); $sun=explode("</strong>",$sun[0]); $sunrise=strlen($sun[0]); $sunrise=substr($sun[0],$sunrise-5);//日出时间 $sunset=strlen($sun[1]); $sunset=substr($sun[1],$sunset-5);//日落时间 $sunhour=substr($sunset,0,2)-substr($sunrise,0,2); $sunminute=$sunhour*60+substr($sunset,-2)-substr($sunrise,-2);//日照时间 $yubao=explode('class="yuBaoTable"',$data); $num=count($yubao); $tl=array(); $th=array(); $fx=array(); $fl=array(); $weather=array(); //第一天 $tr=explode("</tr>",$yubao[1]); $td=explode("</td>",$tr[0]); $weather[]=$this->getChinese($td[3],"UTF-8");//晚上天气 $fx[]=$this->getChinese($td[5],"UTF-8");//晚上风向 $fl[]=substr($this->getChineseNum($td[6],"UTF-8"),5);//晚上风力 $tltemp=explode("<strong>",$td[4]);//最低气温 $tl[]=$this->getNum($tltemp[1]); //从第二天到第七天 for($i=2;$i<$num-1;$i++){ $tr=explode("</tr>",$yubao[$i]); $td=explode("</td>",$tr[0]); $weather[]=$this->getChinese($td[3],"UTF-8");//白天天气 $fx[]=$this->getChinese($td[5],"UTF-8");//白天风向 $fltemp=substr($this->getChineseNum($td[6],"UTF-8"),5); $fl[]=$fltemp;//白天风力 $thtemp=explode("<strong>",$td[4]); $th[]=$this->getNum($thtemp[1]);//最高气温 $td=explode("</td>",$tr[1]); $tltemp=explode("<strong>",$td[3]); $tl[]=$this->getNum($tltemp[1]);//最低气温 } //第八天 $tr=explode("</tr>",$yubao[$num-1]); $td=explode("</td>",$tr[0]); $weather[]=$this->getChinese($td[3],"UTF-8");//白天天气 $fx[]=$this->getChinese($td[5],"UTF-8");//白天风向 $fl[]=substr($this->getChineseNum($td[6],"UTF-8"),5);//白天风力 $thtemp=explode("<strong>",$td[4]); $th[]=$this->getNum($thtemp[1]);//最高气温 if(count($weather)==8){ return array("weather"=>$weather,"tl"=>$tl,"th"=>$th,"fx"=>$fx,"fl"=>$fl,"sunset"=>$sunset,"sunrise"=>$sunrise,"sunminute"=>$sunminute); }else{ return 1; } } function getday1($cityid){ $url="http://www.weather.com.cn/weather/".$cityid.".shtml"; $data=$this->f->fetch($url); $yubao=explode('class="yuBaoTable"',$data); $tr=explode("</tr>",$yubao[1]); $td=explode("</td>",$tr[0]); $thtemp=explode("<strong>",$td[4]); return $this->getNum($thtemp[1]); } }
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