The XML declaration (<?xml version="1.0"?>) was added by DOMDocument::saveXML(). SVGs should contain this XML declaration as the first line of the file, but inline SVGs should not as this results in <?xml version="1.0"?> lines everywhere within an HTML document.
Saving the node of the XML SVG document instead of the whole document, results in the same output but without the XML declaration line.
The XML declaration (
<?xml version="1.0"?>) was added byDOMDocument::saveXML(). SVGs should contain this XML declaration as the first line of the file, but inline SVGs should not as this results in<?xml version="1.0"?>lines everywhere within an HTML document.Saving the node of the XML SVG document instead of the whole document, results in the same output but without the XML declaration line.