<?php
namespace QL;
use phpQuery,Exception,ReflectionClass;
/**
* QueryList
*
* 一个基于phpQuery的通用列表采集类
*
* @author Jaeger
* @email 734708094@qq.com
* @link http://git.oschina.net/jae/QueryList
* @version 3.1.2
*
* @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->data);
//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';
$rules = 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,$rules,$rang);
print_r($hj->data);
//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');
//输出数据
echo $hj->getData();
*/
class QueryList
{
public $data;
public $html;
private $pqHtml;
private $outputEncoding = false;
private $inputEncoding = false;
private $htmlEncoding;
public static $instances;
public 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 $rules 【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，要过滤的选择器名，多个用空格隔开,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 $range 【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 $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
* @param string $inputEncoding 【输入编码格式】明确指定输入的页面编码格式(UTF-8,GB2312,.....)，防止出现乱码,如果设置为 假值 则自动识别
* @param bool|false $removeHead 【是否移除页面头部区域】 乱码终极解决方案
* @return mixed
*/
public static function Query($page,array $rules, $range = '', $outputEncoding = null, $inputEncoding = null,$removeHead = false)
{
return self::getInstance()->_query($page, $rules, $range, $outputEncoding, $inputEncoding,$removeHead);
}
/**
* 运行QueryList扩展
* @param $class
* @param array $args
* @return mixed
* @throws Exception
*/
public static function run($class,$args = array())
{
$extension = self::getInstance("QL\\Ext\\{$class}");
return $extension->run($args);
}
/**
* 获取任意实例
* @return mixed
* @throws Exception
*/
public static function getInstance()
{
$args = func_get_args();
count($args) || $args = array('QL\QueryList');
$key = md5(serialize($args));
$className = array_shift($args);
if(!class_exists($className)) {
throw new Exception("no class {$className}");
}
if(!isset(self::$instances[$key])) {
$rc = new ReflectionClass($className);
self::$instances[$key] = $rc->newInstanceArgs($args);
}
return self::$instances[$key];
}
/**
* 获取目标页面源码(主要用于调试)
* @param bool|true $rel
* @return string
*/
public function getHtml($rel = true)
{
return $rel?$this->qpHtml:$this->html;
}
/**
* 获取采集结果数据
* @param callback $callback
* @return array
*/
public function getData($callback = null)
{
if(is_callable($callback)){
return array_map($callback,$this->data);
}
return $this->data;
}
/**
* 重新设置选择器
* @param $rules
* @param string $range
* @param string $outputEncoding
* @param string $inputEncoding
* @param bool|false $removeHead
* @return QueryList
*/
public function setQuery(array $rules, $range = '',$outputEncoding = null, $inputEncoding = null,$removeHead = false)
{
return $this->_query($this->html,$rules, $range, $outputEncoding, $inputEncoding,$removeHead);
}
private function _query($page,array $rules, $range, $outputEncoding, $inputEncoding,$removeHead)
{
$this->data = array();
$this->html = $this->_isURL($page)?$this->_request($page):$page;
$outputEncoding && $this->outputEncoding = $outputEncoding;
$inputEncoding && $this->inputEncoding = $inputEncoding;
$removeHead && $this->html = $this->_removeHead($this->html);
$this->pqHtml = '';
if(empty($this->html)){
trigger_error("The received content is empty!",E_USER_NOTICE);
}
//获取编码格式
$this->htmlEncoding = $this->inputEncoding?$this->inputEncoding:$this->_getEncode($this->html);
// $this->html = $this->_removeTags($this->html,array('script','style'));
$this->regArr = $rules;
$this->regRange = $range;
$this->_getList();
return $this;
}
private function _getList()
{
$this->inputEncoding && phpQuery::$defaultCharset = $this->inputEncoding;
$document = phpQuery::newDocumentHTML($this->html);
$this->qpHtml = $document->htmlOuter();
if (!empty($this->regRange)) {
$robj = pq($document)->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':
$this->data[$i][$key] = $this->_allowTags(pq($iobj)->html(),$tags);
break;
case 'html':
$this->data[$i][$key] = $this->_stripTags(pq($iobj)->html(),$tags);
break;
default:
$this->data[$i][$key] = pq($iobj)->attr($reg_value[1]);
break;
}
if(isset($reg_value[3])){
$this->data[$i][$key] = call_user_func($reg_value[3],$this->data[$i][$key],$key);
}else if(isset($this->regArr['callback'])){
$this->data[$i][$key] = call_user_func($this->regArr['callback'],$this->data[$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;
$document = phpQuery::newDocumentHTML($this->html);
$tags = isset($reg_value[2])?$reg_value[2]:'';
$lobj = pq($document)->find($reg_value[0]);
$i = 0;
foreach ($lobj as $item) {
switch ($reg_value[1]) {
case 'text':
$this->data[$i][$key] = $this->_allowTags(pq($item)->html(),$tags);
break;
case 'html':
$this->data[$i][$key] = $this->_stripTags(pq($item)->html(),$tags);
break;
default:
$this->data[$i][$key] = pq($item)->attr($reg_value[1]);
break;
}
if(isset($reg_value[3])){
$this->data[$i][$key] = call_user_func($reg_value[3],$this->data[$i][$key],$key);
}else if(isset($this->regArr['callback'])){
$this->data[$i][$key] = call_user_func($this->regArr['callback'],$this->data[$i][$key],$key);
}
$i++;
}
}
}
if ($this->outputEncoding) {
//编码转换
$this->data = $this->_arrayConvertEncoding($this->data, $this->outputEncoding, $this->htmlEncoding);
}
phpQuery::$documents = array();
}
/**
* URL请求
* @param $url
* @return string
*/
private function _request($url)
{
if(function_exists('curl_init')){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_REFERER, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
curl_close($ch);
}elseif(version_compare(PHP_VERSION, '5.0.0')>=0){
$opts = array(
'http' => array(
'header' => "Referer:{$url}"
)
);
$result = file_get_contents($url,false,stream_context_create($opts));
}else{
$result = file_get_contents($url);
}
return $result;
}
/**
* 移除页面head区域代码
* @param $html
* @return mixed
*/
private function _removeHead($html)
{
return preg_replace('/<head.+?>.+<\/head>/is','<head></head>',$html);
}
/**
* 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 = $this->inputEncoding?$this->inputEncoding:$this->htmlEncoding;
$doc = phpQuery::newDocumentHTML($html);
pq($doc)->find($tag_str)->remove();
$html = pq($doc)->htmlOuter();
$doc->unloadDocument();
}
return $html;
}
}
/*
class Autoload
{
public static function load($className)
{
$files = array(
sprintf('%s/extensions/%s.php',__DIR__,$className),
sprintf('%s/extensions/vendors/%s.php',__DIR__,$className)
);
foreach ($files as $file) {
if(is_file($file)){
require $file;
return true;
}
}
return false;
}
}
spl_autoload_register(array('Autoload','load'));
*/