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<?php class Pipe { var $stderr; } function words() { foreach (["foo", "bar", "baz"] as $word) { yield $word; } } function uppercase(Traversable $in, Generator $error) { foreach ($in as $word) { yield strtoupper($word); } } $stderr = function() { for (;;) { $error = (yield); echo "Error! $error\n"; } }; uppercase(words(), $stderr());
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$word' (T_VARIABLE) in /in/NsGiX on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.3 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/NsGiX on line 10
Process exited with code 255.
Output for 5.1.0 - 5.1.2
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/NsGiX on line 5 Parse error: syntax error, unexpected '[' in /in/NsGiX on line 10
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Strict Standards: var: Deprecated. Please use the public/private/protected modifiers in /in/NsGiX on line 5 Parse error: parse error, unexpected '[' in /in/NsGiX on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected '[' in /in/NsGiX on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/NsGiX on line 10
Process exited with code 255.

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