Predefined function reference
map_contains
A reference entry for map_contains
map_contains (map a, mixed element) ⇒ boolean
Returns a boolean true or false if the map, a, contains the key, k.
Alternative function names: associative_array_contains
Notes
Version 1.4.2 dropped the alternative name assoc_contains and added the map_contains alternative name.
Version 1.9.9 switched from associative_array_contains to map_contains.