Loop through SVG elements with PHP
php, svg, xml, xpath
Solution
The svg document is using a default namespace:
<svg xmlns="http://www.w3.org/2000/svg" ...
Further, the xlink namespace is used for image@href attributes. You need to register the default namespace and the xlink namespace using `registerXPathNamespace()`:
$svg = new SimpleXMLElement( $svgString );
// register the default namespace
$svg->registerXPathNamespace('svg', 'http://www.w3.org/2000/svg');
// required for the <image xlink:href=" ... attribute
$svg->registerXPathNamespace('xlink', 'http://www.w3.org/1999/xlink');
// use the prefixes in the query
$result = $svg->xpath('//svg:image/@xlink:href');
echo count( $result ); // output: '2'
for ($i = 0; $i < count($result); $i++)
{
var_dump( $result[$i] );
}
Problem
How can I loop through SVG elements with PHP? ``` <?php $svgString = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="overflow: hidden; position: relative;" width="9140" version="1.1" height="3050"> <rect x="0" y="0" width="9140" height="3050" r="0" rx="0" ry="0" fill="#FFFF00" stroke="#000"/> <image x="-101.5" y="-113.5" width="203" height="227" xlink:href="1.jpg" stroke-width="1"></image> <image x="-201.5" y="-213.5" width="103" height="127" xlink:href="2.jpg" stroke-width="1"></image> </svg>'; $svg = new SimpleXMLElement( $svgString ); $result = $svg->xpath('//image'); echo count( $result ); for ($i = 0; $i < count($result); $i++) { var_dump( $result[$i] ); } ``` `count($result)` returns 0 so the loop is omitted. What am I doing wrong?