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run code in 150+ php & hhvm versions
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<?php function holy_grail_countdown($number) { while (0 <= $number) { $reset = (yield $number); $number = $reset ?: $number - 1; } } $c = holy_grail_countdown(5); foreach ($c as $number) { echo "$number\n"; if (5 === $number) { $c->send(3); } }
Output for 5.5.24 - 7.1.0
5 2 1 0
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '$number' (T_VARIABLE) in /in/q4JYA on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/q4JYA on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_VARIABLE in /in/q4JYA on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/q4JYA on line 5
Process exited with code 255.