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run code in 300+ PHP versions simultaneously

@ 2015-09-22T11:11:39Z

<?php

    function arrayToXml($array, \SimpleXMLElement $xml)
    {
        foreach ($array as $key => $value) {
            if (is_array($value)) {
                if (!is_numeric($key)) {
                    $subNode = $xml->addChild($key);
                } else {
                    $subNode = $xml->addChild('item' . $key);
                }
                arrayToXml($value, $subNode);
            } else {
                $xml->addChild($key, htmlspecialchars($value));
            }
        }
    }
    
    $array = [
        'key' => 'value',
        'arrKey' => [
            'subkey1' => 1,
            'subkey2' => 2,
        ],
        0 => 'numeric zero',
        1 => 'another',
        2 => [
            'adin', 'two', 'three'
        ],
    ];
    
    $xml = new \SimpleXMLElement('<response/>');
    
    arrayToXml($array, $xml);
    
    echo $xml->asXML();
    
    echo PHP_EOL;
    
    $xml = new SimpleXMLElement('<response/>');
array_walk_recursive($array, array ($xml, 'addChild'));
print $xml->asXML();

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 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: <?xml version="1.0"?> <response><key>value</key><arrKey><subkey1>1</subkey1><subkey2>2</subkey2></arrKey><0>numeric zero</0><1>another</1><item2><0>adin</0><1>two</1><2>three</2></item2></response> <?xml version="1.0"?> <response><value>key</value><1>subkey1</1><2>subkey2</2><numeric zero>0</numeric zero><another>1</another><adin>0</adin><two>1</two><three>2</three></response>

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