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采集哦
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[email protected] authored and [email protected] committed May 9, 2018
1 parent e16dec5 commit 889e97b
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315 changes: 315 additions & 0 deletions QueryList.class.php
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<?php
/**
* 合肥多元速---最专业的网页设计培训基地 欢迎大家加入
* http://www.doysu.com
* 培训咨询电话：0551-65118915 唐老师
* 多元速学员QQ交流群：316273374
* QueryList
*
* 一个基于phpQuery的通用列表采集类
* @version 2.2.1
*
* @example
*
//获取CSDN移动开发栏目下的文章列表标题
$hj = QueryList::Query('http://mobile.csdn.net/',array("title"=>array('.unit h1','text')));
print_r($hj->jsonArr);
//回调函数1
function callfun1($content,$key)
{
return '回调函数1：'.$key.'-'.$content;
}
class HJ{
//回调函数2
static public function callfun2($content,$key)
{
return '回调函数2：'.$key.'-'.$content;
}
}
//获取CSDN文章页下面的文章标题和内容
$url = 'http://www.csdn.net/article/2014-06-05/2820091-build-or-buy-a-mobile-game-backend';
$reg = array(
'title'=>array('h1','text','','callfun1'), //获取纯文本格式的标题,并调用回调函数1
'summary'=>array('.summary','text','-input strong'), //获取纯文本的文章摘要，但保strong标签并去除input标签
'content'=>array('.news_content','html','div a -.copyright'), //获取html格式的文章内容，但过滤掉div和a标签,去除类名为copyright的元素
'callback'=>array('HJ','callfun2') //调用回调函数2作为全局回调函数
);
$rang = '.left';
$hj = QueryList::Query($url,$reg,$rang,'curl');
print_r($hj->jsonArr);
//继续获取右边相关热门文章列表的标题以及链接地址
$hj->setQuery(array('title'=>array('','text'),'url'=>array('a','href')),'#con_two_2 li');
//输出json数据
echo $hj->getJson();
*/
require 'phpQuery/phpQuery.php';
class QueryList
{
private $regArr;
public $jsonArr;
private $regRange;
private $html;
private $outputEncoding;
private $htmlEncoding;
private static $ql;
private function __construct() {
}
/**
*
*
* 静态方法，访问入口
* @param string $page 要抓取的网页URL地址(支持https);或者是html源代码
* @param array $regArr 【选择器数组】说明：格式array("名称"=>array("选择器","类型"[,"标签过滤列表"][,"回调函数"]),.......[,"callback"=>"全局回调函数"]);
* 【选择器】说明:可以为任意的jQuery选择器语法
* 【类型】说明：值 "text" ,"html" ,"HTML标签属性" ,
* 【标签过滤列表】:可选，当标签名前面添加减号(-)时（此时标签可以为任意的元素选择器），表示移除该标签以及标签内容，否则当【类型】值为text时表示需要保留的HTML标签，为html时表示要过滤掉的HTML标签
* 【回调函数】/【全局回调函数】：可选，字符串（函数名） 或 数组（array("类名","类的静态方法")），回调函数应有俩个参数，第一个参数是选择到的内容，第二个参数是选择器数组下标，回调函数会覆盖全局回调函数
*
* @param string $regRange 【块选择器】：指 先按照规则 选出 几个大块 ，然后再分别再在块里面 进行相关的选择
* @param string $getHtmlWay 【源码获取方式】指是通过curl抓取源码，还是通过file_get_contents抓取源码
* @param string $outputEncoding【输出编码格式】指要以什么编码输出(UTF-8,GB2312,.....)，防止出现乱码,如果设置为 假值 则不改变原字符串编码
*/
public static function Query($page, $regArr, $regRange = '', $getHtmlWay = 'curl', $outputEncoding = false)
{
if(!(self::$ql instanceof self))
{
self::$ql = new self();
}
self::$ql->_query($page, $regArr, $regRange, $getHtmlWay, $outputEncoding);
return self::$ql;
}
/**
* 重新设置选择器
* @param array $regArr 选择器数组
* @param string $regRange 块选择器
*/
public function setQuery($regArr, $regRange = '')
{
$this->jsonArr = array();
$this->regArr = $regArr;
$this->regRange = $regRange;
$this->_getList();
}
/**
* 得到JSON结构的结果
* @return string
*/
public function getJSON()
{
return json_encode($this->jsonArr);
}
private function _query($page, $regArr, $regRange, $getHtmlWay, $outputEncoding)
{
$this->jsonArr = array();
$this->outputEncoding = $outputEncoding;
if ($this->_isURL($page)) {
if ($getHtmlWay == 'curl') {
//为了能获取https://
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $page);
curl_setopt($ch, CURLOPT_HEADER,true);
curl_setopt($ch, CURLOPT_NOBODY,false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT,3);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION,true);
curl_setopt($ch, CURLOPT_MAXREDIRS,20);
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.0)");
$this->html = curl_exec($ch);
curl_close($ch);
} else {
$this->html = file_get_contents($page);
}
} else {
$this->html = $page;
}
//获取编码格式
$this->htmlEncoding = $this->_getEncode($this->html);
// $this->html = $this->_removeTags($this->html,array('script','style'));
if (!empty($regArr)) {
$this->regArr = $regArr;
$this->regRange = $regRange;
$this->_getList();
}
}
private function _getList()
{
$hobj = phpQuery::newDocumentHTML($this->html);
if (!empty($this->regRange)) {
$robj = pq($hobj)->find($this->regRange);
$i = 0;
foreach ($robj as $item) {
while (list($key, $reg_value) = each($this->regArr)) {
if($key=='callback')continue;
$tags = isset($reg_value[2])?$reg_value[2]:'';
$iobj = pq($item)->find($reg_value[0]);

switch ($reg_value[1]) {
case 'text':
$this->jsonArr[$i][$key] = $this->_allowTags(pq($iobj)->html(),$tags);
break;
case 'html':
$this->jsonArr[$i][$key] = $this->_stripTags(pq($iobj)->html(),$tags);
break;
default:
$this->jsonArr[$i][$key] = pq($iobj)->attr($reg_value[1]);
break;
}

if(isset($reg_value[3])){
$this->jsonArr[$i][$key] = call_user_func($reg_value[3],$this->jsonArr[$i][$key],$key);
}else if(isset($this->regArr['callback'])){
$this->jsonArr[$i][$key] = call_user_func($this->regArr['callback'],$this->jsonArr[$i][$key],$key);
}
}
//重置数组指针
reset($this->regArr);
$i++;
}
} else {
while (list($key, $reg_value) = each($this->regArr)) {
if($key=='callback')continue;
$hobj = phpQuery::newDocumentHTML($this->html);
$tags = isset($reg_value[2])?$reg_value[2]:'';
$lobj = pq($hobj)->find($reg_value[0]);
$i = 0;
foreach ($lobj as $item) {
switch ($reg_value[1]) {
case 'text':
$this->jsonArr[$i][$key] = $this->_allowTags(pq($item)->html(),$tags);
break;
case 'html':
$this->jsonArr[$i][$key] = $this->_stripTags(pq($item)->html(),$tags);
break;
default:
$this->jsonArr[$i][$key] = pq($item)->attr($reg_value[1]);
break;
}

if(isset($reg_value[3])){
$this->jsonArr[$i][$key] = call_user_func($reg_value[3],$this->jsonArr[$i][$key],$key);
}else if(isset($this->regArr['callback'])){
$this->jsonArr[$i][$key] = call_user_func($this->regArr['callback'],$this->jsonArr[$i][$key],$key);
}

$i++;
}
}
}
if ($this->outputEncoding) {
//编码转换
$this->jsonArr = $this->_arrayConvertEncoding($this->jsonArr, $this->outputEncoding, $this->htmlEncoding);
}
phpQuery::$documents = array();
}
/**
* 获取文件编码
* @param $string
* @return string
*/
private function _getEncode($string)
{
return mb_detect_encoding($string, array('ASCII', 'GB2312', 'GBK', 'UTF-8'));
}
/**
* 转换数组值的编码格式
* @param array $arr
* @param string $toEncoding
* @param string $fromEncoding
* @return array
*/
private function _arrayConvertEncoding($arr, $toEncoding, $fromEncoding)
{
eval('$arr = '.iconv($fromEncoding, $toEncoding.'//IGNORE', var_export($arr,TRUE)).';');
return $arr;
}
/**
* 简单的判断一下参数是否为一个URL链接
* @param string $str
* @return boolean
*/
private function _isURL($str)
{
if (preg_match('/^http(s)?:\\/\\/.+/', $str)) {
return true;
}
return false;
}
/**
* 去除特定的html标签
* @param string $html
* @param string $tags_str 多个标签名之间用空格隔开
* @return string
*/
private function _stripTags($html,$tags_str)
{
$tagsArr = $this->_tag($tags_str);
$html = $this->_removeTags($html,$tagsArr[1]);
$p = array();
foreach ($tagsArr[0] as $tag) {
$p[]="/(<(?:\/".$tag."|".$tag.")[^>]*>)/i";
}
$html = preg_replace($p,"",trim($html));
return $html;
}
/**
* 保留特定的html标签
* @param string $html
* @param string $tags_str 多个标签名之间用空格隔开
* @return string
*/
private function _allowTags($html,$tags_str)
{
$tagsArr = $this->_tag($tags_str);
$html = $this->_removeTags($html,$tagsArr[1]);
$allow = '';
foreach ($tagsArr[0] as $tag) {
$allow .= "<$tag> ";
}
return strip_tags(trim($html),$allow);
}
private function _tag($tags_str)
{
$tagArr = preg_split("/\s+/",$tags_str,-1,PREG_SPLIT_NO_EMPTY);
$tags = array(array(),array());
foreach($tagArr as $tag)
{
if(preg_match('/-(.+)/', $tag,$arr))
{
array_push($tags[1], $arr[1]);
}else{
array_push($tags[0], $tag);
}
}
return $tags;
}
/**
* 移除特定的html标签
* @param string $html
* @param array $tags 标签数组
* @return string
*/
private function _removeTags($html,$tags)
{
$tag_str = '';
if(count($tags))
{
foreach ($tags as $tag) {
$tag_str .= $tag_str?','.$tag:$tag;
}
phpQuery::$defaultCharset = $this->htmlEncoding;
$doc = phpQuery::newDocumentHTML($html);
pq($doc)->find($tag_str)->remove();
$html = pq($doc)->htmlOuter();
$doc->unloadDocument();
}
return $html;
}
}



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