Online PHP editor | output for 4dZbp

@ 2013-04-18T10:18:36Z

<?php

namespace GeneratorExample;

function pipe()
{
	$generators = func_get_args();

    return function() use ($generators) {
        $inputs = func_get_args();

		foreach ($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"]);

$p = pipe($uppercase, $reverse, $println);
$p($words);

Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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/4dZbp on line 23
Process exited with code 255.
Output for 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/4dZbp on line 14
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/4dZbp 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/4dZbp on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/4dZbp on line 3
Process exited with code 255.

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