<?php
namespace GeneratorExample;
class Pipeline
{
protected $generators = [];
function __construct()
{
foreach (func_get_args() as $g) {
$this->add($g);
}
}
function add(callable $generator)
{
$this->generators[] = $generator;
return $this;
}
function __invoke()
{
$inputs = func_get_args();
foreach ($this->generators as $g) {
$generator = call_user_func_array($g, $inputs);
$inputs = [$generator];
}
return $generator;
}
}
$uppercase = function(\Traversable $in) {
foreach ($in as $word) {
yield strtoupper($word);
}
};
$reverse = function(\Traversable $in) {
foreach ($in as $word) {
yield strrev($word);
}
};
$println = function(\Traversable $in) {
foreach ($in as $line) {
echo "$line\n";
}
};
$words = new \ArrayIterator(["foo", "bar", "baz"]);
$p = new Pipeline($uppercase, $reverse, $println);
$p($words);
- 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
- OOF
RAB
ZAB
- Output for 5.4.0 - 5.4.45
- Parse error: syntax error, unexpected 'strtoupper' (T_STRING) in /in/9erJO on line 37
Process exited with code 255. - Output for 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/9erJO on line 7
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
- Parse error: syntax error, unexpected T_STRING in /in/9erJO on line 3
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_STRING in /in/9erJO on line 3
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/9erJO on line 3
Process exited with code 255.
preferences:
262.17 ms | 401 KiB | 460 Q