从这一行得到 <topalbums artist="Adele">

Question

大家好，我正在尝试从 last.fm 获取信息，我正在获取专辑名称等，但我想从第 2 行获取。如何获取？

<topalbums artist="Adele" page="1" perPage="1" totalPages="55092" total="55092">

^从这里开始名称、页数、每页数和总页数

<lfm status="ok">
<topalbums artist="Adele" page="1" perPage="1" totalPages="55092" total="55092">
<album>

<name>21</name>
<playcount>52308837</playcount>
<mbid>c45e0e0e-48c9-4441-aac3-2f2b34202d3c</mbid>
<url>https://www.last.fm/music/Adele/21</url>
<artist>

<name>Adele</name>
<mbid>cc2c9c3c-b7bc-4b8b-84d8-4fbd8779e493</mbid>
<url>https://www.last.fm/music/Adele</url>
</artist>
<image size="small">
https://lastfm-img2.akamaized.net/i/u/34s/c894af1e6a735b9bbb2a0312c7719f40.png
</image>
<image size="medium">
https://lastfm-img2.akamaized.net/i/u/64s/c894af1e6a735b9bbb2a0312c7719f40.png
</image>
<image size="large">
https://lastfm-img2.akamaized.net/i/u/174s/c894af1e6a735b9bbb2a0312c7719f40.png
</image>
<image size="extralarge">
https://lastfm-img2.akamaized.net/i/u/300x300/c894af1e6a735b9bbb2a0312c7719f40.png
</image>
</album>
</topalbums>
</lfm>

Answer 1

一种基本方法是使用正则表达式：

preg_match('/artist="([^"]*)"\s*page="([^"]*)"\s*perPage="([^"]*)"\s*totalPages="([^"]*)"/', $lastfm_input, $result);
# $result[1] = name value
# $result[2] = page value
# $result[3] = perPage value
# $result[4] = totalPages value

如果属性的顺序（如 perPage）发生变化，您必须使用多个正则表达式。

Answer 2

$dom = new DOMDocument();
$dom->loadXML($xml);
$topAlbums = $dom->getElementsByTagName('topalbums')->item(0);
$artist = $topAlbums->getAttribute('artist');
echo $artist; // outputs Adele

Answer 3

伙计们，有趣的是我找到了最佳解决方案

<?php 
$attrs = $xml7->topalbums->attributes();
echo $attrs["total"];
?>

从这一行得到 <topalbums artist="Adele">

get from this line <topalbums artist="Adele">

php

api

last.fm