Spread Operator for arrays with string keys in PHP [duplicate]

Question

$ary = [3, 4, 5];
return [1, 2, ...$ary]; // same as [1, 2, 3, 4, 5]

Now I am trying a simple spread operator on 'Object' but it is failing

 $a = ['a' => 1];
 $b = ['b' => 2];
 $c = [...$a, ...$b]; // Expected $c = ['a' => 1, 'b' => 2]

Am I missing something?

Cannot unpack array with string keys

I don't understand why you call this "Object". Apart from that, doesn't the error message already tell you what's up? — Ulrich Eckhardt
– Ulrich Eckhardt, Commented May 23, 2021 at 6:07
Dear this functionality will be coming in php 8.1 and so on, right now its not supported. — Muhammad Asif
– Muhammad Asif, Commented May 23, 2021 at 6:31
Even the question you linked to specifically addresses this in the answer: "Caveat: The unpacked array/Traversable can only have integer keys." — El_Vanja
– El_Vanja, Commented May 23, 2021 at 7:55

Sami Akkawi · Accepted Answer · 2021-05-23 06:17:10Z

0

php simply does not support that,,, to obtain the expected result you would need to use array_merge

$a = ['a' => 1];
$b = ['b' => 2];
$c = array_merge($a, $b); // this will have $c = ['a' => 1, 'b' => 2]

answered May 23, 2021 at 6:17

Sami Akkawi

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