/**
* 根据URL采集网页内容
*
* @param string $url 链接地址
* @return string
*/
private function fetchbyurl($url){
$handle = fopen($url, ‘r’);
$content = ”;
while (!feof($handle)){
$content .= fgets($handle, 10000);
}
return $content;
//?$this->utf8_iconv($content):”;
}
/*获取所有匹配的内容
* @param string $str 内容
* @param string $start 起始匹配
* @param string $end 中止匹配
* @return array
*/
private function utf8_iconv($content){
return iconv(‘GBK’, ‘UTF-8’, $content);
}
private function strCutAll($str,$start,$end){
$content = explode($start,$str);
$matchs = array();
$sum = count($content);
for( $i = 1;$i < $sum;$i++ ){
$tmp = explode($end,$content[$i]);
$matchs[] = $tmp[0];
unset($tmp);
}
return $matchs;
}
/*获取第一个匹配的内容
* @param string $str 内容
* @param string $start 起始匹配
* @param string $end 中止匹配
* @return string
*/
private function strCut($str, $start, $end){
$content = strstr( $str, $start );
$content = substr( $content, strlen( $start ), strpos( $content, $end ) - strlen( $start ) );
return $content;
}
测试:
[code lang="php"]
/*采集程序*/
header("content-Type: text/html; charset=utf-8");
//$nr = file_get_contents('http://shanmao.me/webback/php/php-yi-ju-hua-hou-men-zhuan');
$nr = $this->fetchbyurl('http://shanmao.me/webback/php/php-yi-ju-hua-hou-men-zhuan');//推荐,还可以用curl
dump($this->strCut($nr,'<div class="context">','<div class="betterrelated">'));//得到内容。需要进一步过滤用(preg_match_all)
dump($this->strCutAll($nr,'<title>','</title>')); 得到标题
[/code]