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<?php function gen_one_to_three() { for ($i = 1; $i <= 3; $i++) { yield $i; } } $generator = gen_one_to_three(); foreach ($generator as $value) { echo "$value\n"; } foreach ($generator as $value) { echo "$value\n"; }
Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
1 2 3 Fatal error: Uncaught Exception: Cannot traverse an already closed generator in /in/QXJ5q:14 Stack trace: #0 {main} thrown in /in/QXJ5q on line 14
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
1 2 3 Fatal error: Uncaught exception 'Exception' with message 'Cannot traverse an already closed generator' in /in/QXJ5q:14 Stack trace: #0 /in/QXJ5q(14): unknown() #1 {main} thrown in /in/QXJ5q on line 14
Process exited with code 255.

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