A::flip()
Inverts the given array into a multimap of value → keys. Values may be scalar (a single key) or arrays (each element becomes its own key in the result). Unlike PHP's array_flip(), duplicate values are preserved: every original key that maps to the same value ends up in the resulting list.
A::flip(array $array): arrayParameters
| Name | Type | Default |
|---|---|---|
| $arrayrequired | array |
no default value |
Return type
array
Parent class
Examples
$array = [
'apple' => ['red', 'green'],
'strawberry' => 'red',
'banana' => 'yellow',
'kiwi' => 'green',
];