Load XML element by element, to save memory in PHP

Question

I need to read an XML file on a low memory system (don't have access to increase it). I've tried:

$xmlString = file_get_contents($file);
$doc= new DOMDocument();
$doc->loadXML($xmlString);

and

$doc= new DOMDocument();
$doc->load($file);

Both give me memory errors.

Was wondering if there is a way to read the XML sequentially node by node, so only 1 node is in memory at any given time. I don't care how long this takes as it's a nightly batch process.

The structure of the XML is very simple:

        <InventoryItem>
        <SKU>125244</SKU>
        <Quantity>137196</Quantity>
        <Status>Active</Status>
        </InventoryItem>

repeated may times.

Maybe treating it as text?

Much thanks

Álvaro González · Accepted Answer · 2011-06-29 18:27:21Z

3

You need a pull parser like XMLReader.

answered Jun 29, 2011 at 18:27

Álvaro González

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1 Comment

Henry Over a year ago

This did the trick, and implementing it took 5 minutes using this example: stackoverflow.com/questions/1835177/how-to-use-xmlreader-in-php Muchas Gracias!

brianary · Accepted Answer · 2011-06-29 18:28:35Z

0

You want to use SAX parsing (using the PHP functions, or XMLReader, as mentioned in another answer).

answered Jun 29, 2011 at 18:28

brianary

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