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@ 2017-07-06T12:35:55Z

<?php
$aggs['aggs']['name'] = "name";

function addEnd(&$item, $key)
{
    if(is_array($item)){
        return;
    }elseif($key=='aggs'){
        $item=['name'=> ['aggs' => $item]];
    }else{
        $item=['aggs' => $item];
    }
}
 
for($i=0; $i<5; $i++){ // your loop
    array_walk_recursive($aggs, 'addEnd');
}

var_dump($aggs);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_walk_recursive: documentation ( source)

preferences:dark modelive preview

27.57 ms | 402 KiB | 5 Q