XML processing with PHP

And the output is:

-> openElement element: carlist, attribute: Array () 
-> characterData data is: [ ]
-> characterData data is: [ ]
-> openElement element: car, attribute: Array (type : Mercedes - ) 
-> characterData data is: [S 600]
-> closeElement element is: car
-> characterData data is: [ ]
-> characterData data is: [ ]
-> openElement element: car, attribute: Array (type : Mercedes - ) 
-> characterData data is: [E 270 CDI]
-> closeElement element is: car
-> characterData data is: [ ]
-> characterData data is: [ ]
-> openElement element: car, attribute: Array (type : BMW - ) 
-> characterData data is: [535 D]
-> closeElement element is: car
-> characterData data is: [ ]
-> characterData data is: [ ]
-> openElement element: car, attribute: Array (type : Lexus - ) 
-> characterData data is: [IS 220]
-> closeElement element is: car
-> characterData data is: [ ]
-> closeElement element is: carlist
   
In the output you can find the root element <carlist>, the four child elements <car> the attribute list and the data values.
The only interesting thing is why we have so many time characterData with an empty string?
To understand this you should open the XML file and displays the hidden characters. After it you can see that there is a new line character after a <carlist> element and it is handled as a data value. After it in the second line there are some spaces before the <car> element and it results again a characterData call.
Try to remove all hidden character from the test.xml.

The result will be the following:

-> openElement element: carlist, attribute: Array () 
-> openElement element: car, attribute: Array (type : Mercedes - ) 
-> characterData data is: [S 600]
-> closeElement element is: car
-> openElement element: car, attribute: Array (type : Mercedes - ) 
-> characterData data is: [E 270 CDI]
-> closeElement element is: car
-> openElement element: car, attribute: Array (type : BMW - ) 
-> characterData data is: [535 D]
-> closeElement element is: car
-> openElement element: car, attribute: Array (type : Lexus - ) 
-> characterData data is: [IS 220]
-> closeElement element is: car
-> closeElement element is: carlist
   
Now it is much more clear. Of course you don't have to remove these characters from the XML. I did it just to demonstrate how the processing works.

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