php经过长时间的发展，很多用户都很了解php了，我们现在可以利用php函数实现采集器程序。何为采集器，通常又叫小偷程序，主要是用来抓取别人网页内容的。关于采集器的制作，其实并不难，就是远程打开要采集的网页，然后用正则表达式将需要的内容匹配出来，只要稍微有点正则表达式的基础，都能做出自己的采集器来的。
这样还不够，还需要一个切取PHP函数：
<OL class=dp-xml><LI class=alt><SPAN><SPAN>function cut($string,$start,$end){ </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>message</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>explode</FONT></SPAN><SPAN>($start,$string); </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>message</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>explode</FONT></SPAN><SPAN>($end,$message[1]); return $message[0];}其中$string为要被切取的内容，$start为开始的地方，$end为结束的地方。取出分类号： </SPAN></SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>start</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>"Html/Book/"</FONT></SPAN><SPAN>; </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>end</FONT></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN>= </SPAN><SPAN class=attribute-value><FONT color=#0000ff>"List.shtm"</FONT></SPAN><SPAN>; </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>typeid</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>cut</FONT></SPAN><SPAN>($typeid[0][0],$start,$end); </SPAN></SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>typeid</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>explode</FONT></SPAN><SPAN>("/",$typeid);[/php] </SPAN></SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>这样，$typeid[0]就是我们要找的分类号了。方法如下： </SPAN><LI class=""><SPAN> </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>ustart</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>""</FONT></SPAN><SPAN>"; </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>uend</FONT></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN>= </SPAN><SPAN class=attribute-value><FONT color=#0000ff>""</FONT></SPAN><SPAN>"; </SPAN></SPAN><LI class=""><SPAN>//t表示title的缩写 </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>tstart</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>">"</FONT></SPAN><SPAN>; </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>tend</FONT></SPAN><SPAN> </SPAN></SPAN><LI class=alt><SPAN>= </SPAN><SPAN class=attribute-value><FONT color=#0000ff>"<"</FONT></SPAN><SPAN>; </SPAN></SPAN><LI class=""><SPAN>//取路径,例如:123.shtm,2342.shtm,233.shtm </SPAN><LI class=alt><SPAN>preg_match_all("/"[0-9]{1,}.(shtm)"/is",$chapterurl,$url); </SPAN><LI class=""><SPAN>//取标题,例如:第一章 九世善人 </SPAN><LI class=alt><SPAN>preg_match_all("/</SPAN><STRONG><FONT color=#006699><SPAN class=tag><</SPAN><SPAN class=tag-name>a</SPAN></FONT></STRONG><SPAN> </SPAN><SPAN class=attribute><FONT color=#ff0000>href</FONT></SPAN><SPAN>="[0-9]{1,}.shtm"(.*?)</SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>/a</SPAN><SPAN class=tag><STRONG><FONT color=#006699>></FONT></STRONG></SPAN><SPAN>/is",$file,$title); </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute-value><FONT color=#0000ff>count</FONT></SPAN><SPAN class=attribute><FONT color=#ff0000>countcount</FONT></SPAN><SPAN> = count($url[0]); </SPAN></SPAN><LI class=alt><SPAN>for($</SPAN><SPAN class=attribute><FONT color=#ff0000>i</FONT></SPAN><SPAN>=</SPAN><SPAN class=attribute-value><FONT color=#0000ff>0</FONT></SPAN><SPAN>;$i</SPAN><SPAN class=tag><STRONG><FONT color=#006699><</FONT></STRONG></SPAN><SPAN>=$count;$i++) </SPAN></SPAN><LI class=""><SPAN>{ </SPAN><LI class=alt><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>u</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>cut</FONT></SPAN><SPAN>($url[0][$i],$ustart,$uend); </SPAN></SPAN><LI class=""><SPAN>$</SPAN><SPAN class=attribute><FONT color=#ff0000>t</FONT></SPAN><SPAN> = </SPAN><SPAN class=attribute-value><FONT color=#0000ff>cut</FONT></SPAN><SPAN>($title[0][$i],$tstart,$tend); </SPAN></SPAN><LI class=alt><SPAN>$array[$u] = $t; </SPAN><LI class=""><SPAN>} </SPAN></LI></OL>$array数组就是所有的章节地址了，到这里，采集器就完成一半了，剩下的就是循环打开每个章节地址，读取，然后将内容匹配出来。这个比较简单，这里就不详细叙述了。好了，今天就先写到这吧，第一次写这么长的文章，语言组织方面难免有问题，还请大家多包涵！
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