Question

我还在学习php数组，我正在尝试回应

array(8) { [0]=> string(9) "site_name" [1]=> string(3) "url" [2]=> string(5) "title" [3]=> string(11) "description" [4]=> string(4) "type" [5]=> string(5) "image" [6]=> string(11) "image:width" [7]=> string(12) "image:height" } NULL site_name => Playbuzzurl => http://www.playbuzz.com/jordonr10/what-modern-societal-archetype-fits-your-personalitytitle => What Modern Societal Archetype Fits Your Personality?description => It's 2017, so it's about time we update the books!type => articleimage => http://cdn.playbuzz.com/cdn/aef166e1-1574-4d57-9823-3f38f30bcfc4/810f1d3e-0a97-4797-8235-b4c988562a1c.jpgimage:width => 1600image:height => 842

array（8）{[0] =＆gt; string（9）“site_name”[1] =＆gt; string（3）“url”[2] =＆gt; string（5）“title”[3] =＆gt; string（11）“description”[4] =＆gt;串（4） “type”[5] =＆gt; string（5）“image”[6] =＆gt; string（11）“image：width”[7] =＆gt; string（12）“image：height”} NULL site_name =＆gt; Playbuzzurl =＆gt; http://www.playbuzz.com/jordonr10/what-modern-societal-archetype-fits-your-personalitytitle =＆GT;什么样的现代社会原型适合你的个性？description =＆gt;这是2017年，所以现在是我们更新书籍的时候了！type =＆gt; articleimage =＆GT; http://cdn.playbuzz.com/cdn/aef166e1-1574-4d57-9823-3f38f30bcfc4/810f1d3e-0a97-4797-8235-b4c988562a1c.jpgimage:width =＆gt; 1600image：height =＆gt; 842

我正在尝试仅回显description It's 2017, so it's about time we update the books!

的值

我尝试过几种不同的东西，但没有任何作用。非常感谢任何帮助。

echo $array[0]['description'];      // returns nothing
var_dump($key);                     // returns string(12) "image:height"

当前代码

<?php
require_once('OpenGraph.php');

$graph = OpenGraph::fetch('http://www.playbuzz.com/jordonr10/what-modern-societal-archetype-fits-your-personality');
var_dump($graph->keys());
var_dump($graph->schema);

foreach ($graph as $key => $value) {
    echo "$key => $value<br><hr>";
}
echo "Value Below<hr>";
echo $array['description'];

?>

Answer 1

如果密钥已存在，您的代码似乎可以直接从$graph获取描述值。你也试图在这里展示$array['description'];我可以看到$ array定义任何地方

尝试

 echo $graph['description']; // if $graph is array

OR

echo $graph->description; // If its an object

Answer 2

致电

echo $array[3];

或者使用可以被称为

的关联数组

echo $array['description'];

http://php.net/manual/en/language.types.array.php

在php中回显数组的特定部分

2 个答案: