- array_map: documentation ( source)
- var_dump: documentation ( source)
- array_keys: documentation ( source)
<?php
$lists = [['email' => 'test@test.lv', 'mvars' => ['name' => 'bob']],['email' => 'test@test.lv', 'mvars' => ['name' => 'bob']]];
foreach($lists as $list){
$list = array_map(function($key){
var_dump($key);
if($key == 'name'){
unset($key);
$key = 'newkey';
} else {
}
},array_keys($list['mvars']));
};
var_dump($lists);