Answers for "laravel validation array contains key"

how to check exist in array in rule validation laravel

['someProperty' => ['required', Rule::in(['needed', 'stuff'])]];

in_array validation laravel

in:foo,bar,...

The field under validation must be included in the given list of values. Since 
this rule often requires you to implode an array, the Rule::in method may be 
used to fluently construct the rule:

'field' => 'required|in:' . implode(',', ['value1', 'value2']),