php网络爬虫，实现采集功能

//获取天气预报网站的网页内容$html = file_get_contents("http://www.weather.com.cn/weather1d/101210101.shtml");//正则表达式$reg = ‘#hour3data.+?\[".+?,.+?,(?<tianqi>.+?),(?<wendu>.+?),#‘;//如果匹配成功，就输出温度相关的信息if(preg_match($reg, $html, $mat)){ ???echo "今天".$mat[‘tianqi‘].",温度".$mat[‘wendu‘];}

$url = "http://r.pengyou.com/fcg-bin/cgi_get_portrait.fcg?uins=1579715173";$html = file_get_contents($url);$reg = ‘#.+?\["(.+?)",.+?,.+?,.+?,.+?,.+?,"(.+?)"#‘;if(preg_match($reg, $html, $mat)){ ???//由于防盗链，无法直接使用腾讯的头像链接，所以要先下载到本地 ???file_put_contents("1.jpg",file_get_contents($mat[1])); ???echo "<img src=‘./1.jpg‘ />".$mat[2];}

$ip = "14.215.177.38";$html = file_get_contents("http://ip.chinaz.com/".$ip);$regex = ‘#<p class="WhwtdWrap bor-b1s col-gray03">[\s\S]+?<span class="Whwtdhalf w50-0">(.+?)</span>[\s\S]+?</p>#‘;if(preg_match($regex, $html, $mat)){ ???echo $mat[1];}

$html = file_get_contents("http://book.qidian.com/info/1004608738");$regex = ‘#<li data-rid="\d+?"><a href="(.+?)"[\s\S]+?>(.+?)</a>[\s\S]+?</li>#‘;if(preg_match_all($regex, $html, $mats)){ ???foreach($mats[1] as $k => $v){ ???????$html1 = file_get_contents("http:".$v); ???????$regex1 = ‘#<div class="read-content j_readContent">([\s\S]+?)</div>#‘; ???????//匹配内容 ???????if(preg_match($regex1, $html1, $mat)){ ???????????$mat[1] = preg_replace(‘#<.+?>|\s+?#‘, "",$mat[1]); ???????????$content = "\r\n".$mats[2][$k]."\r\n".$mat[1]; ???????????file_put_contents("1.txt", $content, FILE_APPEND); ???????} else { ???????????echo "内容没有匹配成功"; ???????} ???????echo $mats[2][$k]."\n"; ???}}