[1day2004]

I know you can use eq (equals) and ne (not equals) for if statements.

Is there also a method for checking to see if it 'contains' a certain text?

Example:
{if $user_membership ne "Reseller 20% Discount" and $user_membership ne "Reseller 25% Discount" and $user_membership ne "Reseller 30% Discount" and $user_membership ne "Reseller 35% Discount"}

'Reseller' is common with all these membership types.

Is it possible to simplify this code?

Thanks