Using volist and foreach tags for array loops in ThinkPHP6 templates

ThinkPHP6 provides two template tags, volist and foreach , for looping over arrays in view files.

volist tag

Syntax:

<code>{volist name="" id="" key="" offset="" length=""}
    // loop body
{/volist}</code>

Attributes:

name : the variable name of the array passed to the template.

id : the variable representing each item in the loop.

key : the index, default starts at 1.

offset : the starting row number.

length : the number of rows to retrieve.

Example PHP code defining an array and assigning it to the view:

<code>&lt;?php
namespace app\controller;
use think\facade\View;
class Test {
    public function index(){
        $arr = [
            ['id'=>1,'name'=>'cmcc'],
            ['id'=>2,'name'=>'cctv'],
            ['id'=>1,'name'=>'cmqq']
        ];
        View::assign('arr', $arr);
        return View::fetch();
    }
}
?&gt;</code>

Template usage:

<code>{volist name="arr" id="vv" key="kk" offset="1" length="1"}
    &lt;div&gt;{$kk} --- {$vv['name']}&lt;/div&gt;
{/volist}</code>

The output shows only the second element ("cctv") because the loop starts at offset 1 and retrieves one record.

foreach tag

Syntax:

<code>{foreach $name as $key=&gt;$id}
    // loop body
{/foreach}</code>

Attributes:

name : the variable name of the array in the template.

id : the variable representing each item.

key : the index, default starts at 0.

Example template usage:

<code>{foreach $arr as $k=&gt;$v}
    &lt;div&gt;{$k} --- {$v['name']}&lt;/div&gt;
{/foreach}</code>

The result lists all array elements with their indices. The article notes that the foreach tag requires a leading $ for variable names, whereas volist does not.