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@ 2018-12-28T09:50:47Z

<?php

$r = [
  '123' => "1",
  'W' => "123",
];

var_dump($r);
print_r($r['W']);

$r['W'] = '999';

var_dump($r);
print_r($r['W']);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive preview

68.85 ms | 402 KiB | 5 Q