大家都知道网站需要时效性强的内容，那么泛目录更注重这点，内容时效性强且及时更新就是泛目录首先要解决的问题。今天，错误博客（cuowu.com）分享的内容为《PHP24小时自动更新采集标题》。希望对大家有所帮助。

php网站信息更新,php实时采集方案

一、自动采集原理

自动采集用的是三个php文件，每个文章均放一个header("refresh;url")，A里面放B，B里面放C，C里面放A，开始只需要运行A，那么B过一定时间就会运行一次，B运行时会运行C一次，C运行时会回到A，周而复始，这样子就可以让三个php文件24小时内自动采集了。

header("refresh:600;url=./cuowucom_biaotiA.php");

header("refresh:6;url=./cuowucom_biaotiB.php");

header("refresh:26;url=./cuowucom_biaoti.php");

如下图所示为采集到的标题：

php网站信息更新,php实时采集方案

二、PHP采集标题到txt

泛目录程序中需要调用一些时效性强的标题，采用PHP程序实现自动采集并存放到txt中，会很方便。至少比以前介绍的利用宝塔来定时访问要好很多，因为宝塔定时访问可能会增加不少问题出现概率。三个PHP采集中国新闻网的源码如下：

cuowu_biaoti.php

<?php

$txtnames ="cuowucom/biaoti/cuowucom-biaoti.txt";header("refresh:6;url=./cuowucom_biaotiA.php");set_time_limit(0);$imgline="";function preg_substr($start, $end, $str){$temp = preg_split($start, $str);$content = preg_split($end, $temp[1]);return $content[0];}function str_substr($start, $end, $str){$temp = explode($start, $str, 2);$content = explode($end, $temp[1], 2);return $content[0];}function microtime_float(){list($usec, $sec) = explode(" ", microtime());return ((float)$usec + (float)$sec);}function getiurl($id){global $imgline;$str=$imgline[$id];return $str;}

$abcd=file_get_contents("http://www.chinanews.com/theory.shtml");$hello = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd));

$abcd2=file_get_contents("http://www.chinanews.com/jiankang.shtml");$hello2 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd2));

$abcd3=file_get_contents("http://www.chinanews.com/scroll-news/news2.html");$hello3 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd3));

$abcd4=file_get_contents("http://www.chinanews.com/society.shtml");$hello4 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd4));

$abcd5=file_get_contents("http://www.chinanews.com/scroll-news/news2.html");$hello5 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abc5));

$abcd6=file_get_contents("http://www.chinanews.com/jiankang.shtml");$hello6 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd6));

$abcd7=file_get_contents("http://www.chinanews.com/theory.shtml");$hello7 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd7));

$abcd8=file_get_contents("http://www.chinanews.com/society.shtml");$hello8 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd8));

$abcd9=file_get_contents("http://www.chinanews.com/world.shtml");$hello9 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd9));

$abcd10=file_get_contents("http://www.chinanews.com/scroll-news/news1.html");$hello10 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd10));

$abcd11=file_get_contents("http://www.chinanews.com/scroll-news/news2.html");$hello11 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd11));

$abcd12=file_get_contents("http://www.chinanews.com/scroll-news/news3.html");$hello12 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd12));$abcd13=file_get_contents("http://www.chinanews.com/scroll-news/news4.html");$hello13 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd13));

$myfile = fopen($txtnames, "w") or die("错误博客 cuowu.com Unable to open file!");

for($index=0;$index<count($hello)-1;$index++){$hello[$index]=str_substr('shtml">', '</a>', $hello[$index]);echo $hello[$index]."</br>";fwrite($myfile, $hello[$index]."");}

for($index=0;$index<count($hello2)-1;$index++){$hello2[$index]=str_substr('shtml">', '</a>', $hello2[$index]);echo $hello2[$index]."</br>";fwrite($myfile, $hello2[$index]."");}

for($index=0;$index<count($hello3)-1;$index++){$hello3[$index]=str_substr('shtml">', '</a>', $hello3[$index]);echo $hello3[$index]."</br>";fwrite($myfile, $hello3[$index]."");}

for($index=0;$index<count($hello4)-1;$index++){$hello4[$index]=str_substr('shtml">', '</a>', $hello4[$index]);echo $hello4[$index]."</br>";fwrite($myfile, $hello4[$index]."");}

for($index=0;$index<count($hello5)-1;$index++){$hello5[$index]=str_substr('shtml">', '</a>', $hello5[$index]);echo $hello5[$index]."</br>";fwrite($myfile, $hello5[$index]."");}

for($index=0;$index<count($hello6)-1;$index++){$hello6[$index]=str_substr('shtml">', '</a>', $hello6[$index]);echo $hello6[$index]."</br>";fwrite($myfile, $hello6[$index]."");}

for($index=0;$index<count($hello7)-1;$index++){$hello7[$index]=str_substr('shtml">', '</a>', $hello7[$index]);echo $hello7[$index]."</br>";fwrite($myfile, $hello7[$index]."");}

for($index=0;$index<count($hello8)-1;$index++){$hello8[$index]=str_substr('shtml">', '</a>', $hello8[$index]);echo $hello8[$index]."</br>";fwrite($myfile, $hello8[$index]."");}for($index=0;$index<count($hello9)-1;$index++){$hello9[$index]=str_substr('shtml">', '</a>', $hello9[$index]);echo $hello9[$index]."</br>";fwrite($myfile, $hello9[$index]."");}

for($index=0;$index<count($hello10)-1;$index++){$hello10[$index]=str_substr('shtml">', '</a>', $hello10[$index]);echo $hello10[$index]."</br>";fwrite($myfile, $hello10[$index]."");}

for($index=0;$index<count($hello11)-1;$index++){$hello11[$index]=str_substr('shtml">', '</a>', $hello11[$index]);echo $hello11[$index]."</br>";fwrite($myfile, $hello11[$index]."");}

for($index=0;$index<count($hello12)-1;$index++){$hello12[$index]=str_substr('shtml">', '</a>', $hello12[$index]);echo $hello12[$index]."</br>";fwrite($myfile, $hello12[$index]."");}

for($index=0;$index<count($hello13)-1;$index++){$hello13[$index]=str_substr('shtml">', '</a>', $hello13[$index]);echo $hello13[$index]."</br>";fwrite($myfile, $hello13[$index]."");}

fclose($myfile);

cuowu_biaotiA.php

<?php

$txtnames ="cuowucom/biaoti/cuowucom-biaotiA.txt";header("refresh:6;url=./cuowucom_biaotiB.php");set_time_limit(0);$imgline="";function preg_substr($start, $end, $str){$temp = preg_split($start, $str);$content = preg_split($end, $temp[1]);return $content[0];}function str_substr($start, $end, $str){$temp = explode($start, $str, 2);$content = explode($end, $temp[1], 2);return $content[0];}function microtime_float(){list($usec, $sec) = explode(" ", microtime());return ((float)$usec + (float)$sec);}function getiurl($id){global $imgline;$str=$imgline[$id];return $str;}

$abcd=file_get_contents("http://www.chinanews.com/society.shtml");$hello = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd));

$abcd2=file_get_contents("http://www.chinanews.com/scroll-news/news5.html");$hello2 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd2));

$abcd3=file_get_contents("http://www.chinanews.com/scroll-news/news6.html");$hello3 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd3));

$abcd4=file_get_contents("http://www.chinanews.com/scroll-news/news7.html");$hello4 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd4));$abcd5=file_get_contents("http://www.chinanews.com/scroll-news/news8.html");$hello5 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd5));

$abcd6=file_get_contents("http://www.chinanews.com/mil/news.shtml");$hello6 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd6));

$abcd7=file_get_contents("http://www.chinanews.com/scroll-news/news5.html");$hello7 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd7));

$abcd8=file_get_contents("http://www.chinanews.com/scroll-news/news6.html");$hello8 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd8));

$abcd9=file_get_contents("http://www.chinanews.com/scroll-news/news7.html");$hello9 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd9));$abcd10=file_get_contents("http://www.chinanews.com/scroll-news/news2.html");$hello10 = explode('<div class="dd_time">',str_substr('<div class="content_list">', '<div id="footerAd">', $abcd10));

$myfile = fopen($txtnames, "w") or die(" Unable to open file!");