[php] A basic little helper to convert assoc arrays to xml

AssocArrayToXmlParser.php

<?php

class AssocArrayToXmlParser
{
    private $assocArray;
    private $xmlVersion = '1.0';
    private $encoding   = 'utf-8';

    function __construct(array $_assocArray = null)
    {
        if (!$_assocArray)
            return;

        $this->setArray($_assocArray);
    }

    public function getArray()
    {
        return $this->assocArray;
    }

    public function setArray(array $_assocArray = null)
    {
        if (count(array_filter(array_keys($_assocArray), 'is_string')) > 0)
            $this->assocArray = $_assocArray;
    }

    public function parse()
    {
        reset($this->assocArray);
        $firstKey = key($this->assocArray);

        $xml = '<?xml version="' . $this->xmlVersion . '" encoding="' . $this->encoding . '"?>' . PHP_EOL;
        $xml .= $this->parseAssocNodeToXml($firstKey, $this->assocArray[$firstKey]);

        return $xml;
    }

    private function parseAssocNodeToXml($name, $contents, $intendation = '')
    {
        $attributes = [];

        $nameExplode = explode('[', $name);

        $name = $nameExplode[0];

        foreach ($nameExplode as $i => $expl)
            if ($i !== 0)
                $attributes[] = str_replace(']', '', $expl);

        $attributes = count($attributes)
            ? ' ' . implode(' ', $attributes)
            : '';

        $contentsIsArray = is_array($contents);

        if ($contents === '')
            return $intendation . '<' . $name . $attributes . ' />' . PHP_EOL;

        if ($attributes != ' ') {
            if ($contentsIsArray) {
                $tmp = [];

                foreach ($contents as $contentName => $content)
                    $tmp[] = $this->parseAssocNodeToXml($contentName, $content, $intendation . "\t");

                $contents = PHP_EOL . implode('', $tmp);
            }

            return $intendation . '<' . $name . $attributes . '>' . $contents . ($contentsIsArray ? $intendation : '') . '</' . $name . '>' . PHP_EOL;
        } else {
            $tmp = [];

            foreach ($contents as $content)
                $tmp[] = $this->parseAssocNodeToXml($name, $content, $intendation);

            return implode('', $tmp);
        }
    }
}

usage.php

<?php

$assocArrayXmlMessage = [
    'MyXMLMessage[version="1.0"][type="isPrettyCool"]' => [
        'DateOfExport' => date('Y-m-d H:i:s'),
        'SelfClosingTag' => '',
        'SomethingWhichRepeats[]' => [
            [
                'Id' => 1,
            ],
            [
                'Id' => 2,
            ]
        ]
    ]
];

$parser = new AssocArrayToXmlParser($assocArrayXmlMessage);

$xmlString = $parser->parse();

/*
Output:
    <?xml version="1.0" encoding="utf-8"?>
    <MyXMLMessage version="1.0" type="isPrettyCool">
        <DateOfExport>2016-10-31 10:49:22</DateOfExport>
        <SelfClosingTag />
        <SomethingWhichRepeats>
            <Id>1</Id>
        </SomethingWhichRepeats>
        <SomethingWhichRepeats>
            <Id>2</Id>
        </SomethingWhichRepeats>
    </MyXMLMessage>
*/