get svg image size

$mediapath = ".svg image path";

$file = fopen($mediapath,"r");

if($exten=='svg'){
$content = fread($file,filesize($mediapath));
//fclose($file);
$temp = simplexml_load_string($content);
$width1 = str_replace('px','',(string)$temp->attributes()->width);
$height1 = str_replace('px','',(string)$temp->attributes()->height);
}else{
 $size = getimagesize($mediapath);
}