If is in one category to do something

Hello. Its really hard to explain what i want to do:
If im in the category "Dekstops" i want to add some text under the left column;
If im in the category "Laptops" i want to add some other text under the left column;
If im in the category "Cameras" i want to add some other text under the left column;
How can i do this?
I tried
<?php if ((!isset($this->request->get['route'])) || ($this->request->get['route'] == 'product/category&path=20')) {
echo "Text 1";
}
elseif ((!isset($this->request->get['route'])) || ($this->request->get['route'] == 'product/category&path=25'))
{ echo "Text 2"; }
elseif ((!isset($this->request->get['route'])) || ($this->request->get['route'] == 'product/category&path=30'))
{ echo "Text 3"; }
else {}
?>
but it didnt worked. Little help