网学网为需要PHP的朋友们搜集整理了php切割页面div内容的实现代码分享相关资料,希望对各位网友有所帮助!
亮点:
1、利用php也能实现对页面div的切割处理。这里的做法抛砖引玉,希望读者能够提供更加完美的解决方案。
2、切割处理方法已经封装成一个方法,可以直接引用。
3、顺便加上标签云的截取。//getWebDiv(''id="taglist"'',''http://www.jb51.net/tag/'');
复制代码 代码如下:
<?php
header("Content-type: text/html; charset=utf-8");
function getWebDiv($div_id,$url=false,$data=false){
if($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(''/<div/i'',$data,$pre_matches,PREG_OFFSET_CAPTURE); //获取所有div前缀
preg_match_all(''/<\/div/i'',$data,$suf_matches,PREG_OFFSET_CAPTURE); //获取所有div后缀
$hit = strpos($data,$div_id);
if($hit == -1) return false; //未命中
$divs = array(); //合并所有div
foreach($pre_matches[0] as $index=>$pre_div){
$divs[(int)$pre_div] = ''p'';
$divs[(int)$suf_matches[0][$index]] = ''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){
//<div $hit <div+1 时div被命中
if(($pre_matches[0][$index] < $hit) && ($hit < $pre_matches[0][$index+1])){
$deeper = 0;
//弹出被命中div前的div
while(array_shift($sort) != $pre_matches[0][$index] && ($count--)) continue;
//对剩余div进行匹配,若下一个为前缀,则向下一层,$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];
break;
}else {
$deeper--;
}
}
$hitDivString = substr($data,$pre_matches[0][$index],$length).''</div>'';
break;
}
}
return $hitDivString;
}
echo getWebDiv(''id="taglist"'',''http://www.jb51.net/tag/'');
//End_php
考虑到id符号
问题,id="u"由用户自己填写。
声明:此段php只针对带 id div内容的读取。
完善:匹配任意可闭合带id标签
复制代码 代码如下:
View Code
<?php
header("Content-type: text/html; charset=utf-8");
function getWebTag($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(''/<''.$tag.''/i'',$data,$pre_matches,PREG_OFFSET_CAPTURE); //获取所有div前缀
preg_match_all(''/<\/''.$tag.''/i'',$data,$suf_matches,PREG_OFFSET_CAPTURE); //获取所有div后缀
$hit = strpos($data,$tag_id);
if($hit == -1) return false; //未命中
$divs = array(); //合并所有div
foreach($pre_matches[0] as $index=>$pre_div){
$