PHP key() Function

PHP Array Reference PHP Array Reference

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);
?>

Run example »

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 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 PHP Array Reference

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