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@ 2021-02-09T15:30:53Z

<?php

$source = ["a" => 1, "b" => 2, "c" => 3];
echo json_encode(["d" => 4, "b" => 10] + $source) . PHP_EOL;
echo json_encode(array_merge($source, ["d" => 4, "b" => 10])) . PHP_EOL;

Output
Performance
VLD
References
Branches

array_merge: documentation ( source)
json_encode: documentation ( source)

preferences:dark modelive previewkey bindings

26 ms | 405 KiB | 5 Q