Smarty：放大数组并将其分配给var

Question

I want to archieve the following:

"I am a descriptive sentence"

I put it in an array (for creating keywords for meta tags) via:

[{assign var='meta_key_arr' value=' '|explode:$oEntry->FCLONGDESC_1}]                  

That works so far. My result is an array like that:

array([I],[am],[a],[descriptive],[sentence])

The goal is to get a String like that "I,am,a,descriptive,sentence"

I wanted to implode the array seperated by a comma: [{', '|implode:$meta_key_arr}]

This works fine, but I want to assign the values to another variable $meta_key. Which does not work. I read the manual but the only thing I could find was the syntax above.

[{assign var='meta_key' value=' '|', '|implode:$meta_key_arr}]

did not work. And this didn't work either.

[{assign var='meta_key' value=' ' ', '|implode:$meta_key_arr}]

How can I use the implode function correct? There is a much easier way for sure.

Answer 1

The solution:

[{foreach from=$meta_key_arr item=mkey}]
   [{assign var='meta_key' value=', '|implode:$meta_key_arr}]
[{/foreach}]

Answer 2

您为什么不只使用原始字符串并用逗号替换空格？

[{assign var='meta_key' value=$oEntry->FCLONGDESC_1|replace:' ':', '}]