Online PHP editor | output for oUIJE

@ 2018-07-09T21:09:32Z

<?php

function stack(... $items)
{
    foreach ($items as $item) {
        
        if ($next = yield $item) {
            yield from stack(... $next);
        } else {
            yield $next;
        }
    }
}


$items = [1,2,3];

$stack = stack(...$items);

foreach ($stack as $item) {
    if ($item == 1) {
        $stack->send(['negate', -$item]); // push something onto the stack
    }
    if ($item == 2) {
        continue; // remove something from the stack
    }
    if ($item == 3) {
        $stack->send(['exponential', $item ** 2]); // push something onto the stack
    }
    if (isset($item)) {
        var_dump($item);
    }
}

Output for 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 - 8.3.4, 8.3.6: int(1) int(-1) int(3) int(9)
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 int(1) int(-1) int(3) int(9)
Output for 5.6.0 - 5.6.40: Parse error: syntax error, unexpected '$item' (T_VARIABLE) in /in/oUIJE on line 7
Process exited with code 255.

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