使用新的 YouTube API v3 解析 YouTube 订阅者数量

Question

我想使用新的 API v3 从我的 youtube 频道获取订阅者数量。

1. 我在这里为 youtube 创建了一个 Google API 应用程序：Google API Console
2. 我有 APP 密钥和 youtube 频道 ID
3. 我使用“json_decode”来获取对象

<?php
    $url_yt = "https://www.googleapis.com/youtube/v3/channels?part=statistics&id=CHANNELID&key=APIKEY";
    $yt_array = file_get_contents($url_yt);
    $ytcount = json_decode($yt_array, true);
    $ytsubscribers = $ytcount['items'][0]['subscriberCount'];
     
    echo $ytsubscribers;
?>

即使代码 sn-p 看起来没问题，我也会遇到一些错误。

Warning: file_get_contents() [function.file-get-contents]: SSL: Success in /ytsub2.php on line 4

Warning: file_get_contents() [function.file-get-contents]: Failed to enable crypto in /ytsub2.php on line 4

Warning: file_get_contents(https://www.googleapis.com/youtube/v3/channels?part=statistics&id=CHANNELID&key=APIKEY) [function.file-get-contents]: failed to open stream: operation failed in /ytsub2.php on line 4

我不知道如何解决这个错误。我的站点服务器似乎无法正确获取 JSON。

编辑：

我尝试使用 cURL 没有任何结果：

<?php

	//function to get the remote data
	function url_get_contents ($url) {
	    if (function_exists('curl_exec')){ 
	        $conn = curl_init($url);
	        curl_setopt($conn, CURLOPT_SSL_VERIFYPEER, true);
	        curl_setopt($conn, CURLOPT_FRESH_CONNECT,  true);
	        curl_setopt($conn, CURLOPT_RETURNTRANSFER, 1);
	        $url_get_contents_data = (curl_exec($conn));
	        curl_close($conn);
	    }elseif(function_exists('file_get_contents')){
	        $url_get_contents_data = file_get_contents($url);
	    }elseif(function_exists('fopen') && function_exists('stream_get_contents')){
	        $handle = fopen ($url, "r");
	        $url_get_contents_data = stream_get_contents($handle);
	    }else{
	        $url_get_contents_data = false;
	    }
	return $url_get_contents_data;
	} 
	


	$url_yt = "https://www.googleapis.com/youtube/v3/channels?part=statistics&id=CHANNELID&key=APIKEY";
	$yt_array = url_get_contents($url_yt);
	$ytcount = json_decode($yt_array, true);
	$ytsubscribers = $ytcount['items'][0]['subscriberCount'];



// echo the youtube follower count
    echo $ytsubscribers;

?>

Answer 1

这是使用 cURL 的正确工作代码：

	# url_get_contents function by Andy Langton: http://andylangton.co.uk/
	function url_get_contents($url,$useragent='cURL',$headers=false, $follow_redirects=false,$debug=false) {
	# initialise the CURL library
	$ch = curl_init();
	# specify the URL to be retrieved
	curl_setopt($ch, CURLOPT_URL,$url);
	# we want to get the contents of the URL and store it in a variable
	curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
	# specify the useragent: this is a required courtesy to site owners
	curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
	# ignore SSL errors
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	# return headers as requested
	if ($headers==true){
	curl_setopt($ch, CURLOPT_HEADER,1);
	}
	# only return headers
	if ($headers=='headers only') {
	curl_setopt($ch, CURLOPT_NOBODY ,1);
	}
	# follow redirects - note this is disabled by default in most PHP installs from 4.4.4 up
	if ($follow_redirects==true) {
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); 
	}
	# if debugging, return an array with CURL's debug info and the URL contents
	if ($debug==true) {
	$result['contents']=curl_exec($ch);
	$result['info']=curl_getinfo($ch);
	}
	# otherwise just return the contents as a variable
	else $result=curl_exec($ch);
	# free resources
	curl_close($ch);
	# send back the data
	return $result;
	}
 
 	$url_yt = "https://www.googleapis.com/youtube/v3/channels?part=statistics&id=YOUR_CHANNEL_ID&key=YOUR_API_KEY";
	url_get_contents($url_yt);
	$yt_array = url_get_contents($url_yt);
	$ytcount = json_decode($yt_array, true);
	$ytsubscribers = $ytcount['items'][0]['statistics']['subscriberCount'];

然后在你想显示它的地方调用变量 $ytsubscribers。

echo $ytsubscribers;

Answer 2

确保您在 Google Developers Console 中允许从您的 IP 地址进行访问。

另外，更改这一行：

$ytsubscribers = $ytcount['items'][0]['subscriberCount'];

到这里：

$ytsubscribers = $ytcount['items'][0]['statistics']['subscriberCount'];