$iterator->keyOf()
Tries to find the key for the given element
$iterator->keyOf(mixed $needle): string|int|falseParameters
| Name | Type | Default | Description |
|---|---|---|---|
| $needle * | mixed |
– | the element to search for |
Return type
string|int|false
Tries to find the key for the given element
$iterator->keyOf(mixed $needle): string|int|false| Name | Type | Default | Description |
|---|---|---|---|
| $needle * | mixed |
– | the element to search for |
string|int|false