PHP function key()
Fetch a key from an array
Availability in PHP 4.0
Fetch a key from an array
Parameters
| Parameter | Data type | Default value | Note |
|---|---|---|---|
$array |
array |
not | The array. |
Return values
mixed
The key function simply returns the key of the array element that's currently being pointed to by the internal pointer. It does not move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, key returns &null;.
Additional resources
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