fb tool

fb tool

<?php 

	class ParserPages {
		
		public static $app_token = '124546464634646|3d8f4e8993a8abfddfdscxvcxve5';

		
		public static $max_times = 5;
		
		public static function api($ins){
			$token = self::$app_token;
			$link = (strpos($ins, '?') !== false) ? '&' : '?';

			$url = "https://graph.facebook.com/{$ins}{$link}access_token={$token}";
			// echo $url;
			$res = self::httpGet($url, 1);
			return $res; 
		}
		
		//取得網址按讚分享討論
		public static function get_url_info($urls = []){
			
			$urls = (gettype($urls) == 'array') ? implode(',', $urls) : $urls;
			
			return self::api("?fields=og_object{likes.limit(0).summary(1)},share&ids={$urls}");
			
		}
		
		public static function exchange_token($token){
			$config = explode('|', self::$app_token);
			$id     = $config[0];
			$secret = $config[1];
			
			$url = "https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token&client_id={$id}&client_secret={$secret}&fb_exchange_token={$token}";
			
			$res = self::httpGet($url);

			if($res){
				parse_str($res, $output);
				return $output; 
			} 
			
			return false;
			
		}
		

		//url 取得 fb object id
		public static function get_id_by_url($url){
			$token = self::$app_token;
			// $token = '';
			$url = "https://graph.facebook.com/{$url}?fields=likes,name,id&access_token={$token}";
			// echo $url;
			$res = self::httpGet($url);
			// show($res);
			return $res;
		}
		
		public static function set_max_times($num){
			self::$max_times = $num;
		}
		// parser message by id
		public static function parser($fb_id, $method = 'posts', $callback = null, $attr = false){
			
			$def_attr = [
				"until" =>false,
				"since" =>false,					
				"fields"=>false
			];
			
			$fields = [
				'full_picture',
				'message',
				'created_time',
				'type',
				'shares',
				'likes.limit(1).summary(true)',
				'comments.limit(1).summary(true)',
				'object_id'
			];
			
			
			$token = self::$app_token;
			$times = 0;
			
			if(false == $attr) $attr = $def_attr;
			
			$attr['fields'] =( false == $attr['fields']  )? $fields : $attr['fields'];
			
			if(is_array($attr['fields']) ) $attr['fields'] = implode(',', $attr['fields']);
			
			
			$fb_get_value = "access_token={$token}&";
			
			//$attr['access_token'] = $token;
			ksort($attr);
			foreach ($attr AS $key => $value){				
				if(false == $value) continue;		
				$fb_get_value .= "&{$key}={$value}";
			}
			
			
			$url = "https://graph.facebook.com/{$fb_id}/{$method}?{$fb_get_value}";
			
			// echo $url;
			while(true){
				
				$times++;
				$stop_now = false;
				$stop     = false;
				// echo $url.'<br/>';
				$res = [];
				$res = self::file_get_content($url, 1);
				// show($times);
				// echo '<br />';
				// show(self::$max_times);
				// echo '-----';
				if(!$res) break;
				
				if(is_callable($callback)){
					
					if(isset($res['paging'], $res['paging']['next'])){
						$url = $res['paging']['next'];
					} else{
						$stop_now = true;
					}
					// echo $url;
					$stop = $callback($res);
					
					// show($stop);
					$stop = ($stop === false) ? false : true;
					// show($stop);
					//使用者中止或到達最大次數中止
			           if(!$stop || $stop_now || $times > self::$max_times) break;
				}
			
			}
		}  
		
		
		public static function get_likes_info($id, $method = "feed"){
			
			if($method == 'feed'){
			
				$api_in = "{$id}?fields=shares,likes.limit(1).summary(true),comments.limit(1).summary(true)";
			}
			if($method == 'photos'){
				
				$api_in = "{$id}?fields=shares,likes.limit(1).summary(true),comments.limit(1).summary(true)";
			}
			if($method == 'videos'){
				
				$api_in = "{$id}?fields=likes.limit(1).summary(true),comments.limit(1).summary(true)";
			}			
			$res = self::api($api_in);
			// show($res);
			if(!isset($res['error'])){
				return array(
					'shares'   => isset($res['shares']) ? $res['shares']['count'] : 0,
					'likes'    => isset($res['likes']) ? $res['likes']['summary']['total_count'] : 0,
					'comments' => isset($res['comments']) ? $res['comments']['summary']['total_count'] : 0
				);
			}
			return false;
		}
		
		public static function get_reach($id){
			$res = self::api($id.'/Insights/post_impressions_unique?fields=values&limit=1', 1);
			// show($res );
			return isset($res['error']) ? false : 
					isset($res['data'][0], $res['data'][0]['values']) ? ['reach' => $res['data'][0]['values'][0]['value']] : ['reach' => 0];
		}
		
		//http get
		public static function httpGet($url, $json = false){
		  $ch = curl_init($url);
		  curl_setopt( $ch, CURLOPT_POST, false );
		  curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
		  curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7");
		  curl_setopt( $ch, CURLOPT_HEADER, false );
		  curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
		  $data = curl_exec( $ch );
		  return ($json) ? json_decode($data, 1) : $data;
		} 
		
		public static function file_get_content($url, $json = false){
			try {
			 $data = file_get_contents($url);
			 return ($json) ? json_decode($data, 1) : $data;
			} catch (Exception $e) {
				
				return false;
			}
			return false;
		}
	}