php WordPress 回显数组
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WordPress echo out array
提问by Cameron
I have the following line of code: $terms = get_the_terms( $the_post->ID, 'posts_tags' ); echo $terms;The idea is to echo out the array in the format of the tags but instead it just returns the word Array?
我有以下代码行：$terms = get_the_terms( $the_post->ID, 'posts_tags' ); echo $terms;这个想法是以标签的格式回显数组，但它只是返回单词 Array?
How do I do this? The tags should be presented like this: 'tag1, tag2, tag3'
我该怎么做呢？标签应如下所示：'tag1, tag2, tag3'
回答by Nanne
try
尝试
foreach($terms as $term){
echo $term;
}
you might want to add something to separate them, like a $echo ","or something, but you get the idea
You can also use this
你可能想添加一些东西来分隔它们，比如 a$echo ","或什么，但你明白了
你也可以使用这个
$termsString = implode (',' , $terms);
echo $termsString;
As requested:
按照要求：
The terms is indeed an array, see for instance @ProdigySim 's answer for how it looks. You could indeed print them for debuggin purposes with var_dumpor print_r, but that would not help you in a production environment.
这些术语确实是一个数组，例如，请参阅@ProdigySim 的答案，了解它的外观。您确实可以使用var_dump或出于调试目的打印它们print_r，但这在生产环境中对您没有帮助。
Assuming that it is not an associative array, you could find the first tag like this:
假设它不是关联数组，您可以找到第一个标签，如下所示：
echo $terms[0]
and the rest like
其余的喜欢
echo $terms[1]
Right up until the last one (count($terms)-1).
The foreach prints each of these in order. The second, as you can find in the manualjust makes one string of them.
直到最后一个（count($terms)-1）。
foreach 按顺序打印每一个。第二个，正如您在手册中所见，只制作其中的一串。
In the end, as you asked in the comments: Just paste this.
最后，正如您在评论中所问：只需粘贴即可。
$terms = get_the_terms( $the_post->ID, 'posts_tags' );
$termsString = implode (',' , $terms);
echo $termsString;
回答by ProdigySim
回答by Ryre
Arrays are an amazing feature in every programming language I've ever used. I highly suggest spending some time reading up on them, especially if you're customizing wordpress.
在我使用过的每一种编程语言中，数组都是一个了不起的特性。我强烈建议花一些时间阅读它们，特别是如果您正在自定义 wordpress。
The reason it only echos array is because echo can only return strings. Try print_r($terms) or var_dump($terms) for more information.
它只回显数组的原因是因为回显只能返回字符串。尝试 print_r($terms) 或 var_dump($terms) 以获取更多信息。
