spacify

spacify is a way to insert a space between every character of a variable. You can optionally pass a different character or string to insert.

Parameter Position	Type	Required	Default	Description
1	string	No	one space	This what gets inserted between each character of the variable.

Template:

{$articleTitle = 'Lets Learn.'}

{$articleTitle}
{$articleTitle|spacify}
{$articleTitle|spacify:"^^"}

output:

Lets Learn.
L e t s  L e a r n .
L^^e^^t^^s^^^^L^^e^^a^^r^^n^^.

see also spaceify in PHP Smarty documentation.