3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?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"; } }; foreach (uppercase(words(), $stderr()) as $word) { echo "$word\n"; }
Output for 5.5.24 - 7.1.0
FOO BAR BAZ
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$word' (T_VARIABLE) in /in/dL5Ck on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.3 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/dL5Ck 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/dL5Ck on line 5 Parse error: syntax error, unexpected '[' in /in/dL5Ck 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/dL5Ck on line 5 Parse error: parse error, unexpected '[' in /in/dL5Ck on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '[' in /in/dL5Ck on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/dL5Ck on line 10
Process exited with code 255.