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
First available: Version 1.3.4
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.
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