Online PHP editor | output for TvPR7

@ 2015-04-23T06:47:43Z

<?php

$array = [
        'USA' =>
        [
            'Alabama' =>
            [
                'Montgomery',
                'Birmingham'
            ],
            'Arizona' =>
            [
                'Phoenix',
                'Mesa',
                'Gilbert'
            ]
        ],
        'Germany' =>
        [
            'West Germany' =>
            [
                'Bonn',
                'Cologne'
            ]
        ]
    ];

$arrayobject = new ArrayObject($array);
$iterator = $arrayobject->getIterator();

while($iterator->valid()) {
    $c = $iterator->current();
    echo $iterator->key() . ' => ' . (is_array($c) ? 'array' : $c) . "\n";

    $iterator->next();
}

Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 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: USA => array Germany => array
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29: Parse error: syntax error, unexpected '[' in /in/TvPR7 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 '[' in /in/TvPR7 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Parse error: parse error in /in/TvPR7 on line 3
Process exited with code 255.

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