PHP Script to convert .CSV files to .XML

The code given above creates an XML document, but does not store it on any physical device. So replace echo $doc->saveXML(); with

$strxml = $doc->saveXML();
$handle = fopen($outputFilename, "w");
fwrite($handle, $strxml);
fclose($handle);

This is quite easy to do, just look at fgetcsv to read csv files and then DomDocument to write an xml file. This version uses the headers from the file as the keys of the xml document.

<?php
error_reporting(E_ALL | E_STRICT);
ini_set('display_errors', true);
ini_set('auto_detect_line_endings', true);

$inputFilename    = 'input.csv';
$outputFilename   = 'output.xml';

// Open csv to read
$inputFile  = fopen($inputFilename, 'rt');

// Get the headers of the file
$headers = fgetcsv($inputFile);

// Create a new dom document with pretty formatting
$doc  = new DomDocument();
$doc->formatOutput   = true;

// Add a root node to the document
$root = $doc->createElement('rows');
$root = $doc->appendChild($root);

// Loop through each row creating a <row> node with the correct data
while (($row = fgetcsv($inputFile)) !== FALSE)
{
    $container = $doc->createElement('row');
    foreach($headers as $i => $header)
    {
        $child = $doc->createElement($header);
        $child = $container->appendChild($child);
        $value = $doc->createTextNode($row[$i]);
        $value = $child->appendChild($value);
    }

    $root->appendChild($container);
}

$strxml = $doc->saveXML();
$handle = fopen($outputFilename, "w");
fwrite($handle, $strxml);
fclose($handle);

There are a number of sites out there that will do it for you.

If this is going to be a regular process rather than a one-time thing it may be ideal to just parse the CSV and output the XML yourself:

$csv = file("path/to/csv.csv");

foreach($csv as $line)
{
    $data = explode(",", $line);
    echo "<xmltag>".$data[0]."</xmltag>";
    //etc...
}

Look up PHP's file and string functions.