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<?php function generator(): iterable { yield 'x' => 1; yield 2; yield 3; } $iterable = generator(); var_dump($iterable); var_export([...$iterable]);
Output for 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
object(Generator)#1 (1) { ["function"]=> string(9) "generator" } array ( 'x' => 1, 0 => 2, 1 => 3, )
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30
object(Generator)#1 (0) { } array ( 'x' => 1, 0 => 2, 1 => 3, )
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
object(Generator)#1 (0) { } Fatal error: Uncaught Error: Cannot unpack Traversable with string keys in /in/UkdLD:14 Stack trace: #0 {main} thrown in /in/UkdLD on line 14
Process exited with code 255.
Output for 7.3.0 - 7.3.33
Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/UkdLD on line 14
Process exited with code 255.

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