Replace
A shorthand version of the str_replace function is given here to be used as to replace a value in a string.
{$variable_name|replace:'hello':'world'}Count
Use this to count the number of entries in an array.
{$variable_name|count}Empty Check
Use this to check empty or not .
{$variable_name|empty}Not Empty
Use this to check string or array not empty
{$variable_name|empty:'!'}Isset
Use this to check variable have value or not.
{$variable_name|isset}