can an "echo" command be used to fix this

I using a customisable shopping cart and noticed that it produced 2 separate urls for the home (index) page. The 2nd being when I click on the “home” in the breadcrumb giving http://mydomainname/cid-1-1/home.html rather than Therefore I was worried about duplicate content.

I have mentioned this to the programmers and they have “fixed” it by using an echo to the root url
echo (
I am not a php programmer but I am abit suspicious of their so called fix

Please can someone tell what is the affect of this command - does it simply change the url displayed in the browser, does it actually redirect the page or does it do something else

Also would the page still be seen as 2 different urls when crawled by google

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