Question

好到目前为止，我已经能够使用Google Feed显示来自用户/相册的缩略图。一切都显示正常，除非我想要显示更大的缩略图。我似乎无法显示大图像，不知道在这里使用什么......这是我的代码：

<?php
$user = '100483307985144997386';
$albumid = '5092093264124561713';
$picasaURL = "http://picasaweb.google.com/$user/";
$albumfeedURL = "http://picasaweb.google.com/data/feed/api/user/$user/albumid/$albumid";

$sxml_album = simplexml_load_file($albumfeedURL);
echo '<table cellpadding="3" cellspacing="3">';
echo "<tr>";
$i = 0;
foreach( $sxml_album->entry as $album_photo )
{   

   //$title = $album_photo->title;
    $summary = $album_photo->summary;
    // Write thumbnail to file
    $media = $album_photo->children('http://search.yahoo.com/mrss/');
    $thumbnail = $media->group->thumbnail[1];

    $gphoto = $album_photo->children('http://schemas.google.com/photos/2007/');
    $linkName = $gphoto->group->attributes()->{'url'};    
    // Direct address to thumbnail
    $thumbAddy = $thumbnail->attributes()->{'url'};    
    if($i%4==0) { echo '</tr><tr>'; } 

    echo '<td style="width:90px; overflow:hidden; word-wrap:break-word; font-size:12px;">';
    echo '<a class="fancybox-buttons" data-fancybox-group="button" href="'. $linkName . '"><img src="'. $thumbAddy . '" /></a>';         
    echo '<p>'. $summary . '</p></td>';
    $i++; 
}

echo '</tr></table>';

Answer 1

每张照片的Feed / api包含3张拇指和一张大图片，可在以下原生http rest api上访问：

"media$thumbnail":[
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/s72/DSC01612.JPG",
"height":72,
"width":48
},
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/s144/DSC01612.JPG",
"height":144,
"width":96
},
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/s288/DSC01612.JPG",
"height":288,
"width":192
}
],

LARGE ONE:

"media$group":{
"media$content":[
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/DSC01612.JPG",
"height":512,
"width":341,
"type":"image/jpeg",
"medium":"image"
}

similar reference

将客户端编码为底层REST api时，通常可以帮助您更好地掌握本机协议以及线路上的字符流（请求/响应）。然后你将PHP / Curl改编为http协议中的内容。

谷歌oauth游乐场是一个很棒的工具，用于测试针对任何gdata apis（包括picasa）开发所涉及的来回对话... ...

playground

这是获取拇指的游乐场请求代码和给定相册/照片的大图片...

GET //data/entry/api/user/rowntreerob/albumid/5682316071017984417/photoid/5682316083381958690?fields=media%3Agroup%2Fmedia%3Athumbnail%5B%40url%5D%2Cmedia%3Agroup%2Fmedia%3Acontent%5B%40url%5D&alt=json HTTP/1.1


Host: picasaweb.google.com
Authorization: OAuth ya29.AHES6ZT123y3Y5Cy3rILYg4Ah4q....
HTTP/1.1 200 OK
status: 200
gdata-version: 1.0
content-length: 756
x-xss-protection: 1; mode=block
content-location: https://picasaweb.google.com//data/entry/api/user/rowntreerob/albumid/5682316071017984417/photoid/5682316083381958690?fields=media%3Agroup%2Fmedia%3Athumbnail%5B%40url%5D%2Cmedia%3Agroup%2Fmedia%3Acontent%5B%40url%5D&alt=json
x-content-type-options: nosniff
set-cookie: _rtok=a1p2m3PiHFkc; Path=/; Secure; HttpOnly, S=photos_html=sX3EHuLxGEre_OMvR0LTPg; Domain=.google.com; Path=/; Secure; HttpOnly
expires: Wed, 16 May 2012 03:23:51 GMT
vary: Accept, X-GData-Authorization, GData-Version, Cookie
x-google-cache-control: remote-fetch
-content-encoding: gzip
server: GSE
last-modified: Fri, 06 Jan 2012 17:57:33 GMT
via: HTTP/1.1 GWA
cache-control: private, max-age=0, must-revalidate, no-transform
date: Wed, 16 May 2012 03:23:51 GMT
access-control-allow-origin: *
content-type: application/json; charset=UTF-8
x-frame-options: SAMEORIGIN

以及对上述内容的回应通过一张漂亮的印刷品......

"version":"1.0",
"encoding":"UTF-8",
"entry":{
"xmlns":"http://www.w3.org/2005/Atom",
"xmlns$media":"http://search.yahoo.com/mrss/",
"media$group":{
"media$content":[
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/DSC01612.JPG",
"height":512,
"width":341,
"type":"image/jpeg",
"medium":"image"
}
],
"media$thumbnail":[
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/s72/DSC01612.JPG",
"height":72,
"width":48
},
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/s144/DSC01612.JPG",
"height":144,
"width":96
},
{
"url":"https://lh3.googleusercontent.com/-_FFMNGPU1TQ/TtukXyN4eCI/AAAAAAAACso/EzPmut2iKVQ/s288/DSC01612.JPG",
"height":288,
"width":192

Answer 2

您可以使用imgmax参数指定大小（imgmax = d表示原始图像）。 https://developers.google.com/picasa-web/docs/2.0/reference#Parameters

Answer 3

您是否尝试过print_r（$ album_photo）来检查对象的确切格式及其包含的内容？

我很确定您可以在该API中指定一些其他参数来访问不同大小的图片和缩略图。检查文档。

我之前使用json-script格式访问过此API，从内存中可以指定很多选项。

Answer 4

我已经搜遍整个互联网，试图找到这个问题的答案。实际上没有人回答这个问题。为了将来参考任何其他阅读或我未来的自我，以获得大图像：

echo $album_photo->content->attributes()->{'src'};

这是WAAAAYY比它应该更复杂，普通的XML用户可能已经知道如何做到这一点。：/

php picasa api显示大图像

4 个答案: