<?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"; // outputs 5, then 2 and finally 1.
if (5 === $number) {
$c->send(3);
}
}
- Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- 5
2
1
- Output for 5.4.0 - 5.4.45
- Parse error: syntax error, unexpected '$number' (T_VARIABLE) in /in/8i0RC on line 5
Process exited with code 255. - Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected T_VARIABLE in /in/8i0RC on line 5
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, 5.0.0 - 5.0.5
- Parse error: parse error, unexpected T_VARIABLE in /in/8i0RC on line 5
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/8i0RC on line 5
Process exited with code 255.
preferences:
250.28 ms | 401 KiB | 355 Q