探究Ptcms⼩说采集规则
[]
表⽰数组⽽⾮排列，即不按固定次序位置排列；
在[]内的字符可以任意次序出现。
[ABC]+
可以匹配"AAABBBCCC,BBBAAACCC,BACCBACAACBAC,…"，不是⼀定按固定A…B…C…的次序排列。
[\w./-+]+
是匹配\w [0-9a-zA-Z_] 或 . 或 / 或 - 或 + 字符；
在[./-+]内均表⽰字符本⾝；
廉洁文化进校园征文在[]+外表⽰{1,}⾄少1次或多次；
在[.]内点，不是任意字符的意思，就是匹配点.字符本⾝，点.可以不需要加反斜杠.。
在[]内特殊字符，表⽰匹配特殊字符本⾝，不需要加反斜杠，
在[]外特殊字符，表⽰匹配特殊字符本⾝，必须要加反斜杠。
()⽤于捕获匹配的字符串,⽐如：a(.?)b捕获a和b之间的任何字符(除了换⾏符外)
⽽且()还⽤于括起正则表达式中的⼩组，⽐如：^(a|b).$匹配以a或b开头的任何字符串
另外,(?:pattern)是⼀个⾮捕获匹配，就是匹配但不捕获字符串
(?<=pattern)逆序肯定环视，表⽰所在位置左侧能够匹配pattern
(?<!pattern)逆序否定环视，表⽰所在位置左侧不能匹配pattern
(?=pattern)顺序肯定环视，表⽰所在位置右侧能够匹配pattern
(?!pattern)顺序否定环视，表⽰所在位置右侧不能匹配pattern
这些都和()是不同的概念，不要混淆
[]⽤于定义匹配的字符集或字符范围,⽐如：[a-z]匹配⼀个英⽂⼩写字母范围从a到z
{}⽤于定义匹配的次数,⽐如：a{1,}匹配a⾄少⼀次
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<a href="/">⾎红⼩说⽹</a> > <a href="/xuanhuan/1.html">⽞幻⼩说</a> > ⼭村最强⼩农民最新章节列表
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<h1>⼭村最强⼩农民</h1>
<p>作 ；者：赵⼩刚</p>
<p>动 ；作：<a href="javascript:;" onClick="showpop('/modules/article/addbookca.php?bid=5875&ajax_request=1');">加⼊书架</a>, <a href="javascript:;" onClick="showpop('/modules/article/urvote.php?id=5875&ajax_request=1');">投推荐票</a>, <a href="#footer">直达底部</a ></p>
<p>最后更新：2018-10-03 21:14</p>
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<p>⼤哥死的突然，留下⼀个仙⼥⼀般的嫂⼦让赵⼩刚照顾，但是村⾥⼈都说她是扫把星，克夫命，赵⼩刚却不信邪，于是……</p>
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<em>作者：冷⾯加糖 </em><em>状态：连载中 </em><em>更新时间：10-04</em><em>最新章节：<a href="40372978.html">第⼀千⼆百九⼗三章试仙⽯开启</a></em>
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三界众⽣，我为修罗。战天⽃地，不死不灭！
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