php xml get value of node

How can I get "bla" in the below dump of my node
Essentially bla is what is contained in my node
<mynode name="myvalueone" display="myvalue2">bla</mynode>

object(SimpleXMLElement)[21]
  public '@attributes' => 
    array
      'name' => string 'myvalueone' (length=65)
      'display' => string 'myvalue2' (length=9)
  string 'bla' (length=3)

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