存储SimpleXML节点的值，即使它更新

Question

I am trying to store the value of an xml node and keep it the same even if it updates.

If I do:

$sxml->node = 1;
$blah = $sxml->node;
echo($blah . "<br />");
$sxml->node = 2;
echo($blah . "<br />");

The output will be

1
2

I want $blah to stay the same regardless of what happens to $sxml->node. How would I do this?

Answer 1

Type cast the SimpleXML object given by $sxml->node to a string:

$blah = (string) $sxml->node;

This prevents the object's properties from being updated.