We have a collection of built-in functions you can use in the Editor in combination with expression language.
Some are built-in functions imported from the PHP language, while others were created specifically for use in Editor.

 

Name	Origin	Description	Parameters
count	PHP	link	1 array or countable object, 2  optional COUNT_RECURSIVE
rand	PHP	link	1 lowest return number, 2 highest return number
strtolower	PHP	link	1 string
strtoupper	PHP	link	1 string
date	PHP	link	1 date format, 2 optional timestamp
is_numeric	PHP	link	1 variable
is_int	PHP	link	1 variable
strlen	PHP	link	1 string
array_rand	PHP	link	1 array, 2 number of entries to be picked
urlencode	PHP	link	1 string
str_replace	PHP	link	1 searched value, 2 replacement value, 3 array or string being searched, 4 optional number of replacements
array_splice	PHP	link	1 array, 2 offset number, 3 optional length number, 4 optional replacement array
is_array	PHP	link	1 variable
in_array	PHP	link	1 searched value, 2 array, 3 optional TRUE for strict search
array_search	PHP	link	1 searched value, 2 array, 3 optional TRUE for strict search
array_shuffle	custom	Randomizes the order of the elements an array	1 array
decode_special_chars	custom	Decodes special HTML characters	1 string
array_sort_by_field	custom	Sorts an array by field name	1 array, 2 name of the field
ordinal	custom	Converts a number to an ordinal number	1 numeric variable
human_concat	custom	Joins words together with a comma, and “and”	1 array