php - How can i get some part of html using XPath? -

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I need to get some part of html pages using the php XPath query (sorry, new to XPath ).

Example html page 

  & lt; Html & gt; & Lt; Head & gt; Blah Line & lt; / Head & gt; & Lt; Body & gt; & Lt; Div id = "mytable" & gt; & Lt; Table & gt; & Lt; Tr & gt; & Lt; Td> Table cell cost & lt; / Td> & Lt; / Tr & gt; & Lt; / Table & gt; & Lt; / Div & gt; K & lt; Body & gt; & Lt; Html & gt;

Is there any way to get the div content of the example above with the HTML tag using the Except?

The following xpath query will return" mytable "div: 

  // div [@ id = 'mytable']


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