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run code in 150+ php & hhvm versions
Bugs & Features
<?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 5.5.24 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
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 - 5.2.17
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 - 4.4.1, 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.