Online PHP editor | output for KPH2h

@ 2021-06-12T15:32:03Z

<?php

function getComments(int $parentId = null): array {
    $comments = [
        ['id' => 1, 'parentId' => null, 'comment' => 'foo'],
        ['id' => 2, 'parentId' => null, 'comment' => 'bar'],
        ['id' => 3, 'parentId' => 1, 'comment' => 'foo 1'],
        ['id' => 4, 'parentId' => 1, 'comment' => 'foo 2'],
        ['id' => 5, 'parentId' => 4, 'comment' => 'foo 2-1'],
        ['id' => 6, 'parentId' => 2, 'comment' => 'foo bar'],
        ['id' => 7, 'parentId' => 5, 'comment' => 'foo 2-1-1'],
    ];
    
    return array_filter($comments, fn (array $comment): bool => $comment['parentId'] === $parentId);
}

function showComments(?int $parentId = null, int $level =  0) {
    foreach (getComments($parentId) as $comment) {
        printf('%sComment id: %d - comment %s', str_repeat('   ', $level), $comment['id'], $comment['comment']);
        echo "\n";

        showComments($comment['id'], $level + 1);
    }
}

showComments();

Output for 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: Comment id: 1 - comment foo Comment id: 3 - comment foo 1 Comment id: 4 - comment foo 2 Comment id: 5 - comment foo 2-1 Comment id: 7 - comment foo 2-1-1 Comment id: 2 - comment bar Comment id: 6 - comment foo bar
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 Comment id: 1 - comment foo Comment id: 3 - comment foo 1 Comment id: 4 - comment foo 2 Comment id: 5 - comment foo 2-1 Comment id: 7 - comment foo 2-1-1 Comment id: 2 - comment bar Comment id: 6 - comment foo bar
Output for 7.3.0 - 7.3.33: Parse error: syntax error, unexpected '$comment' (T_VARIABLE), expecting '(' in /in/KPH2h on line 14
Process exited with code 255.

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