彩票网站怎么做系统,惠州 家具 网站上线,聊城网站建设项目,网模php获取页面指定标签内容的实现代码分享可以匹配任意可闭合带id标签header ( Content-type: text/html; charsetutf-8 );/** 参数说明: $tag_id:所要获取的元素Tag Id $url:所要获取页面的Url $tag:所要获取的标签 $data*/function getWebTag($tag_id, $url false…php获取页面指定标签内容的实现代码分享可以匹配任意可闭合带id标签header ( Content-type: text/html; charsetutf-8 );/** 参数说明: $tag_id:所要获取的元素Tag Id $url:所要获取页面的Url $tag:所要获取的标签 $data*/function getWebTag($tag_id, $url false, $tag div, $data false) {if ($url ! false) {$data file_get_contents ( $url );}$charset_pos stripos ( $data, charset );if ($charset_pos) {if (stripos ( $data, utf-8, $charset_pos )) {$data iconv ( utf-8, utf-8, $data );} else if (stripos ( $data, gb2312, $charset_pos )) {$data iconv ( gb2312, utf-8, $data );} else if (stripos ( $data, gbk, $charset_pos )) {$data iconv ( gbk, utf-8, $data );}}preg_match_all ( /preg_match_all ( /$hit strpos ( $data, $tag_id );if ($hit - 1)return false; // 未命中$divs array (); // 合并所有divforeach ( $pre_matches [0] as $index $pre_div ) {$divs [( int ) $pre_div [1]] p;$divs [( int ) $suf_matches [0] [$index] [1]] s;}// 对div进行排序$sort array_keys ( $divs );asort ( $sort );$count count ( $pre_matches [0] );foreach ( $pre_matches [0] as $index $pre_div ) {// if (($pre_matches [0] [$index] [1] $hit) ($hit $pre_matches [0] [$index 1] [1])) {$deeper 0;// 弹出被命中div前的divwhile ( array_shift ( $sort ) ! $pre_matches [0] [$index] [1] ($count --) )continue;// 对剩余div进行匹配若下一个为前缀则向下一层$deeper加1// 否则后退一层$deeper减1$deeper为0则命中匹配计算div长度foreach ( $sort as $key ) {if ($divs [$key] p)$deeper ;else if ($deeper 0) {$length $key - $pre_matches [0] [$index] [1];break;} else {$deeper --;}}$hitDivString substr ( $data, $pre_matches [0] [$index] [1], $length ) . . $tag . ;break;}}return $hitDivString;}
