<?php
function gen_map($f, $iter) {
foreach ($iter as $k => $v) {
yield $k => $f($v);
}
}
// example:
function times_two($x) {
return $x * 2;
}
$source = new ArrayIterator([0, 1, 2, 3, 4, 5, 6]);
//var_dump(iterator_to_array(iter_map('times_two', $source)));
print_r(iterator_to_array(gen_map('times_two', $source)));
- Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- Array
(
[0] => 0
[1] => 2
[2] => 4
[3] => 6
[4] => 8
[5] => 10
[6] => 12
)
- Output for 5.4.0 - 5.4.45
- Parse error: syntax error, unexpected '$k' (T_VARIABLE) in /in/Yqhs5 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/Yqhs5 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/Yqhs5 on line 5
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/Yqhs5 on line 5
Process exited with code 255.
preferences:
245.01 ms | 401 KiB | 383 Q