PHP key() Function
Example
Return the element key from the current internal pointer position:
<?php
$people=array("Peter","Joe","Glenn","Cleveland");
echo "The key from the current position is: " . key($people);
?>
Try it Yourself »
Definition and Usage
The key() function returns the element key from the current internal pointer position.
This function returns FALSE on error.
Syntax
key(array)
Parameter Values
| Parameter | Description |
|---|---|
| array | Required. Specifies the array to use |
Technical Details
| Return Value: | Returns the key of the array element that is currently being pointed to by the internal pointer |
|---|---|
| PHP Version: | 4+ |
❮ PHP Array Reference
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