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我發現了一個php script，它在理論上符合我的需求，但是我不能讓它工作，我想知道腳本是否過時，或者如果我做錯了什麼。Yahoo Answers API + php Scraper
腳本是這樣的：
<?php
/**
* @package Yahoo Answer
* @author The HungryCoder
* @link http://hungrycoder.xenexbd.com/?p=953
* @version 1.0
* @license GPL, This class does not come with any expressed or implied warranties! Use at your own risks!
*/
class yahooAnswer{
var $appID;
var $searchQuestionURL = 'http://answers.yahooapis.com/AnswersService/V1/questionSearch?';
var $getQuestionURL = 'http://answers.yahooapis.com/AnswersService/V1/getQuestion?';
private $numResults = 10;
private $numStart = 0;
function __construct($appid) {
$this->appID=$appid;
}
function set_numResults($num_results){
$this->numResults = $num_results;
}
/**
* Search for questions for the given keywords. Returned results can be associative array or XML
* @param <string> $kewyord
* @return <string> Returns the results set either in XML format or associative array.
*/
function search_questions($params){
if(!is_array($params)){
throw new Exception('The parameters must be an array!');
}
$defaults = array(
'search_in' => '',
'category_name' => '',
'date_range' => '', //7, 7-30, 30-60, 60-90, more90
'sort' => 'relevance', //relevance, date_desc, date_asc
'type' => 'all',
'output' => 'php',
'results' => $this->numResults,
'start' => $this->numStart,
'region' => 'us',
'appid' => $this->appID,
);
$params = array_merge($defaults,$params);
if(!$params['appid']){
throw new Exception('APP ID is empty!', 404);
}
if(!$params['query']) {
throw new Exception('Query is not set!', '404');
}
$req_params = $this->array2query_string($params);
$url = $this->searchQuestionURL.$req_params;
$results = $this->make_call($url);
if($params['output']=='php'){
$results = unserialize($results);
return $results['Questions'];
}
return $results;
}
/**
* Get all answers of a given question ID
* @param <array> $params keys are: question_id, output, appid
* @return <string> Returns all answers in expected format. default format is php array
*/
function get_question($params){
if(!is_array($params)){
throw new Exception('The parameter must be an array!');
}
$defaults = array(
'question_id' => '',
'output' => 'php',
'appid' => $this->appID,
);
$params = array_merge($defaults,$params);
if(!$params['appid']){
throw new Exception('APP ID is empty!', 404);
}
if(!$params['question_id']) {
throw new Exception('Question ID is not set!', '404');
}
$req_params = $this->array2query_string($params);
$url = $this->getQuestionURL.$req_params;
$results = $this->make_call($url);
if($params['output']=='php'){
$results = unserialize($results);
return $results['Questions'][0];
}
return $results;
}
protected function make_call($url){
if(function_exists('curl_init')){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1);
curl_setopt($ch, CURLOPT_TIMEOUT,60);
$result = curl_exec($ch);
curl_close($ch);
return $result;
} else if(function_exists('file_get_contents')) {
return file_get_contents($url);
} else {
throw new Exception('No method available to contact remote server! We must need cURL or file_get_contents()!', '500');
}
}
protected function array2query_string($array){
if(!is_array($array)) throw new Exception('Parameter must be an array', '500');
$params ='';
foreach($array as $key=>$val){
$params .= "$key=$val&";
}
return $params;
}
}
$appid = 'MYAPPID';
$params = array(
'query' => 'test', //enter your keyword here. this will be searched on yahoo answer
'results' => 2, //number of questions it should return
'type' => 'resolved', //only resolved questiosn will be returned. other values can be all, open, undecided
'output' => 'php', //result will be PHP array. Other values can be xml, json, rss
);
$question_id = 'test'; //without this i get an error "Question ID is not set!"
$yn = new yahooAnswer($appid);
//search questions
try{
$questions = $yn->search_questions($params);
} catch (Exception $e){
echo ($e->getMessage());
}
foreach ($questions as $question) {
//now get the answers for the question_id;
try{
$answers = $yn->get_question(array('question_id'=>$question_id));
echo '<pre>';
print_r($answers);
echo '<pre>';
} catch (Exception $e){
echo($e->getMessage());
}
}
?>
但不是一個有效的輸出我得到這個：
Array
(
[id] =>
[type] =>
[Subject] =>
[Content] =>
[Date] =>
[Timestamp] =>
[Link] => http://answers.yahoo.com/question/?qid=
[Category] => Array
(
[id] =>
[content] =>
)
[UserId] =>
[UserNick] =>
[UserPhotoURL] =>
[NumAnswers] =>
[NumComments] =>
[ChosenAnswer] =>
[ChosenAnswererId] =>
[ChosenAnswererNick] =>
[ChosenAnswerTimestamp] =>
[ChosenAnswerAwardTimestamp] =>
)
我與其他關鍵詞試了一下，但結果總是相同。
這部分$question_id = 'test';不包含在官方腳本中，但沒有它我一直得到Question ID is not set!。
我也試圖去改變它，在另一個地方腳本等等一切我能想到的它添加，但結果卻總是陣列除了[Link]
任何信息自從我得到幾乎爲零的PHP經驗，我甚至不在哪裏開始尋找一個錯誤：/會很高興，如果有人能指引我在正確的方向！
問候！
p.s.當然「MYAPPID」更改爲我的真實雅虎應用程序ID。