unset range of keys in an array

Question

How can i unset a range of keys between say 70 to 80 in an array like this?

[63] => Computer Science and Informatics
[64] => Dentistry
[65] => Devel         


        

Answer 1

You can try array_slice

$return = array_slice($original, 0, 60)

then

$return = $return+array_slice($original, 70)

or

array_splice

$return = array_splice($original, 60, 10)

Answer 2

There isn't really a shortcut to this:

for ($i = 70; $i <= 80; $i++)  
    unset($array[$i]);