count_characters

Used to count the number of characters in a variable.

Parameter Position	Type	Required	Default	Description
1	boolean	No	false	This determines whether or not to include white-space characters in the count.

Template:

{$articleTitle = 'Cold Wave Linked to Temperatures.'}

{$articleTitle}
{$articleTitle|count_characters}
{$articleTitle|count_characters:true}

output:

Cold Wave Linked to Temperatures.
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see also count_characters in PHP Smarty documentation.