Online PHP editor | output for sMTSV

@ 2016-08-02T13:50:47Z

<?php

$lists = [['email' => 'test@test.lv', 'mvars' => ['name' => 'bob']],['email' => 'test@test.lv', 'mvars' => ['name' => 'bob']]];

foreach($lists as $list){
 array_map(function($key){
  var_dump($key);
  if($key == 'name'){
   unset($key);
   $key = 'newkey';
  } else {
   
  }
 },array_keys($list['mvars']));
 return $list['mvars'];
};

var_dump($lists);

Output for 5.6.0 - 5.6.24, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: string(4) "name"
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(4) "name"

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