求大神帮忙抓取这个网页http://sports.sohu.com/zhongchao.shtml的排行榜部分的数据(包括积分榜和射手榜)
回复讨论(解决方案)
抓取 研究研究 phpquery
$url = 'http://sports.sohu.com/zhongchao.shtml';$s = file_get_contents($url);preg_match_all('/(?<=<div class="turn cons">)\s<table.+table>/isU', $s, $m);print_r(preg_grep('/名次/', $m[0]));
Array( [2] => <table border=0 cellSpacing=0 cellPadding=0 width="100%"><tbody><tr><th width="15%">名次</th><th width="47%">球队</th><th width="9%">场次</th><th width="29%">积分</th></tr><tr><td>01</td><td><a href="http://sports.sohu.com/s2010/7742/s277701524/" target="_blank">广州恒大</a></td><td>20</td><td>45</td></tr><tr><td>02</td><td><a href="http://sports.sohu.com/s2006/7742/s242155493/" target="_blank">北京国安</a></td>......接下来自己做
可以使用preg_match去抓取对应的HTML代码然后再正则过滤你想要的数据即可。
给你推荐个类 simple_html_dom
include "simple_html_dom.class.php";$url = "http://sports.sohu.com/zhongchao.shtml";$dom = new simple_html_dom();$html = $dom->load(file_get_contents($url));$res = $html->find("div#turnIDB div.turn");# 积分榜echo $res[0]->outertext;# 射手榜echo $res[1]->outertext;
结果
$str=file_get_contents("http://sports.sohu.com/zhongchao.shtml");preg_match_all('/<tr>\s*<td>(.+?)<\/td>\s*<td>(.+?)<\/td>\s*<td>(\d+)<\/td>\s*<td>(.+?)<\/td>\s*<\/tr>/i',$str,$match1);foreach($match1 as $k=>$v){ if($k!=0){ foreach($v as $k1=>$v1){ if($k1<=15){ $jifen[$k][]=$v1; }else{ $sheshou[$k][]=$v1; } } }}echo "<pre class="brush:php;toolbar:false">";print_r($jifen);print_r($sheshou);echo "";/*Array( [1] => Array ( [0] => 01 [1] => 02 [2] => 03 [3] => 04 [4] => 05 [5] => 06 [6] => 07 [7] => 08 [8] => 09 [9] => 10 [10] => 11 [11] => 12 [12] => 13 [13] => 14 [14] => 15 [15] => 16 ) [2] => Array ( [0] => 广州恒大 [1] => 北京国安 [2] => 广州富力 [3] => 上海东亚 [4] => 贵州茅台 [5] => 山东鲁能 [6] => 天津泰达 [7] => 江苏舜天 [8] => 上海绿地 [9] => 长春亚泰 [10] => 杭州绿城 [11] => 大连阿尔滨 [12] => 上海申鑫 [13] => 河南建业 [14] => 辽宁宏运 [15] => 哈尔滨毅腾 ) [3] => Array ( [0] => 20 [1] => 19 [2] => 19 [3] => 19 [4] => 19 [5] => 19 [6] => 19 [7] => 18 [8] => 20 [9] => 19 [10] => 19 [11] => 19 [12] => 19 [13] => 19 [14] => 19 [15] => 18 ) [4] => Array ( [0] => 45 [1] => 41 [2] => 34 [3] => 31 [4] => 30 [5] => 28 [6] => 27 [7] => 25 [8] => 23 [9] => 21 [10] => 21 [11] => 20 [12] => 19 [13] => 17 [14] => 16 [15] => 12 ))Array( [1] => Array ( [0] => 01 [1] => 02 [2] => 03 [3] => 04 [4] => 04 [5] => 04 [6] => 04 [7] => 08 [8] => 09 [9] => 09 [10] => 09 [11] => 09 [12] => 09 [13] => 09 [14] => 15 [15] => 15 ) [2] => Array ( [0] => 埃尔克森 [1] => 哈默德 [2] => 海森 [3] => 达维 [4] => 多利 [5] => 洛维 [6] => 拉蒙 [7] => 德扬 [8] => 巴塔拉 [9] => 布鲁诺 [10] => 里卡多 [11] => 武磊 [12] => 埃尼奥 [13] => 尤里 [14] => 莫雷诺 [15] => 雷内 ) [3] => Array ( [0] => 17 [1] => 16 [2] => 13 [3] => 9 [4] => 9 [5] => 9 [6] => 9 [7] => 8 [8] => 7 [9] => 7 [10] => 7 [11] => 7 [12] => 7 [13] => 7 [14] => 6 [15] => 6 ) [4] => Array ( [0] => 广州恒大 [1] => 广州富力 [2] => 上海东亚 [3] => 广州富力 [4] => 哈尔滨毅腾 [5] => 山东鲁能 [6] => 杭州绿城 [7] => 北京国安 [8] => 北京国安 [9] => 大连阿尔滨 [10] => 哈尔滨毅腾 [11] => 上海东亚 [12] => 长春亚泰 [13] => 贵州茅台 [14] => 上海绿地 [15] => 广州恒大 ))*/
后面的自己处理吧
$url = 'http://sports.sohu.com/zhongchao.shtml';$s = file_get_contents($url);preg_match_all('/(?<=<div class="turn cons">)\s<table.+table>/isU', $s, $m);print_r(preg_grep('/名次/', $m[0]));
Array( [2] => <table border=0 cellSpacing=0 cellPadding=0 width="100%"><tbody><tr><th width="15%">名次</th><th width="47%">球队</th><th width="9%">场次</th><th width="29%">积分</th></tr><tr><td>01</td><td><a href="http://sports.sohu.com/s2010/7742/s277701524/" target="_blank">广州恒大</a></td><td>20</td><td>45</td></tr><tr><td>02</td><td><a href="http://sports.sohu.com/s2006/7742/s242155493/" target="_blank">北京国安</a></td>......接下来自己做
我输出出来的怎么是一个空数组
sohu的页面是gb2312的,采集后需要转utf8,否则会乱码
echo '<meta http-equiv="content-type" content="text/html;charset=utf-8">';$url = 'http://sports.sohu.com/zhongchao.shtml';$s = file_get_contents($url);$s = iconv('GBK','UTF8', $s); // gb2312转utf8preg_match_all('/(?<=<div class="turn cons">)\s<table.+table>/isU', $s, $m);// 获取积分榜preg_match_all('/<tr>\s*<td>(.+?)<\/td>\s*<td>(.+?)<\/td>\s*<td>(\d+)<\/td>\s*<td>(.+?)<\/td>\s*<\/tr>/i',$m[0][2],$scores);$scoreboard = array();for($i=0,$len=count($scores[1]); $i<$len; $i++){ $tmp = array($scores[1][$i],strip_tags($scores[2][$i]),$scores[3][$i],$scores[4][$i]); array_push($scoreboard, $tmp);}print_r($scoreboard);// 射手榜preg_match_all('/<tr>\s*<td>(.+?)<\/td>\s*<td>(.+?)<\/td>\s*<td>(\d+)<\/td>\s*<td>(.+?)<\/td>\s*<\/tr>/i',$m[0][3],$shooters);$shooterboard = array();for($i=0,$len=count($shooters[1]); $i<$len; $i++){ $tmp = array($shooters[1][$i],strip_tags($shooters[2][$i]),$shooters[3][$i],$shooters[4][$i]); array_push($shooterboard, $tmp);}print_r($shooterboard);
积分榜
Array( [0] => Array ( [0] => 01 [1] => 广州恒大 [2] => 20 [3] => 45 ) [1] => Array ( [0] => 02 [1] => 北京国安 [2] => 19 [3] => 41 ) [2] => Array ( [0] => 03 [1] => 广州富力 [2] => 19 [3] => 34 ) [3] => Array ( [0] => 04 [1] => 上海东亚 [2] => 19 [3] => 31 ) [4] => Array ( [0] => 05 [1] => 贵州茅台 [2] => 19 [3] => 30 ) [5] => Array ( [0] => 06 [1] => 山东鲁能 [2] => 19 [3] => 28 ) [6] => Array ( [0] => 07 [1] => 天津泰达 [2] => 19 [3] => 27 ) [7] => Array ( [0] => 08 [1] => 江苏舜天 [2] => 18 [3] => 25 ) [8] => Array ( [0] => 09 [1] => 上海绿地 [2] => 20 [3] => 23 ) [9] => Array ( [0] => 10 [1] => 长春亚泰 [2] => 19 [3] => 21 ) [10] => Array ( [0] => 11 [1] => 杭州绿城 [2] => 19 [3] => 21 ) [11] => Array ( [0] => 12 [1] => 大连阿尔滨 [2] => 19 [3] => 20 ) [12] => Array ( [0] => 13 [1] => 上海申鑫 [2] => 19 [3] => 19 ) [13] => Array ( [0] => 14 [1] => 河南建业 [2] => 19 [3] => 17 ) [14] => Array ( [0] => 15 [1] => 辽宁宏运 [2] => 19 [3] => 16 ) [15] => Array ( [0] => 16 [1] => 哈尔滨毅腾 [2] => 18 [3] => 12 ))
射手榜
Array( [0] => Array ( [0] => 01 [1] => 埃尔克森 [2] => 17 [3] => 广州恒大 ) [1] => Array ( [0] => 02 [1] => 哈默德 [2] => 16 [3] => 广州富力 ) [2] => Array ( [0] => 03 [1] => 海森 [2] => 13 [3] => 上海东亚 ) [3] => Array ( [0] => 04 [1] => 达维 [2] => 9 [3] => 广州富力 ) [4] => Array ( [0] => 04 [1] => 多利 [2] => 9 [3] => 哈尔滨毅腾 ) [5] => Array ( [0] => 04 [1] => 洛维 [2] => 9 [3] => 山东鲁能 ) [6] => Array ( [0] => 04 [1] => 拉蒙 [2] => 9 [3] => 杭州绿城 ) [7] => Array ( [0] => 08 [1] => 德扬 [2] => 8 [3] => 北京国安 ) [8] => Array ( [0] => 09 [1] => 巴塔拉 [2] => 7 [3] => 北京国安 ) [9] => Array ( [0] => 09 [1] => 布鲁诺 [2] => 7 [3] => 大连阿尔滨 ) [10] => Array ( [0] => 09 [1] => 里卡多 [2] => 7 [3] => 哈尔滨毅腾 ) [11] => Array ( [0] => 09 [1] => 武磊 [2] => 7 [3] => 上海东亚 ) [12] => Array ( [0] => 09 [1] => 埃尼奥 [2] => 7 [3] => 长春亚泰 ) [13] => Array ( [0] => 09 [1] => 尤里 [2] => 7 [3] => 贵州茅台 ) [14] => Array ( [0] => 15 [1] => 莫雷诺 [2] => 6 [3] => 上海绿地 ) [15] => Array ( [0] => 15 [1] => 雷内 [2] => 6 [3] => 广州恒大 ))

绝对会话超时从会话创建时开始计时,闲置会话超时则从用户无操作时开始计时。绝对会话超时适用于需要严格控制会话生命周期的场景,如金融应用;闲置会话超时适合希望用户长时间保持会话活跃的应用,如社交媒体。

服务器会话失效可以通过以下步骤解决:1.检查服务器配置,确保会话设置正确。2.验证客户端cookies,确认浏览器支持并正确发送。3.检查会话存储服务,如Redis,确保其正常运行。4.审查应用代码,确保会话逻辑正确。通过这些步骤,可以有效诊断和修复会话问题,提升用户体验。

session_start()iscucialinphpformanagingusersessions.1)ItInitiateSanewsessionifnoneexists,2)resumesanexistingsessions,and3)setsasesessionCookieforContinuityActinuityAccontinuityAcconActInityAcconActInityAcconAccRequests,EnablingApplicationsApplicationsLikeUseAppericationLikeUseAthenticationalticationaltication and PersersonalizedContentent。

设置httponly标志对会话cookie至关重要,因为它能有效防止XSS攻击,保护用户会话信息。具体来说,1)httponly标志阻止JavaScript访问cookie,2)在PHP和Flask中可以通过setcookie和make_response设置该标志,3)尽管不能防范所有攻击,但应作为整体安全策略的一部分。

phpsessions solvathepromblymaintainingStateAcrossMultipleHttpRequestsbyStoringDataTaNthEserVerAndAssociatingItwithaIniquesestionId.1)他们储存了AtoredAtaserver side,通常是Infilesordatabases,InseasessessionIdStoreDistordStoredStoredStoredStoredStoredStoredStoreDoreToreTeReTrestaa.2)

tostartaphpsession,usesesses_start()attheScript'Sbeginning.1)placeitbeforeanyOutputtosetThesessionCookie.2)useSessionsforuserDatalikeloginstatusorshoppingcarts.3)regenerateSessiveIdStopreventFentfixationAttacks.s.4)考虑使用AttActAcks.s.s.4)

会话再生是指在用户进行敏感操作时生成新会话ID并使旧ID失效,以防会话固定攻击。实现步骤包括:1.检测敏感操作,2.生成新会话ID,3.销毁旧会话ID,4.更新用户端会话信息。


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