note 73138 deleted from ref.array by felipe

Note Submitter: Colin 

----

I couldn't get the previous set pointer functions working for whatever reason so I modifed. I trigger errors if needed but obviously you can do whatever

	// setPointer - Sets the pointer to the provided $key in provided $array
	final private function setPointer(&$array, $set_key) {
	
		// Check if $array is an array
		if (!is_array($array)) {
			trigger_error('$array must be an array', E_USER_ERROR);
			}
	
		// Check if $key is in $array
		if (!array_key_exists($set_key, $array)) {
			trigger_error('$set_key must exist in $array', E_USER_ERROR);
			}

		// Set array pointer to first element
		reset($array);
	
		// Cycle through array
		while ($set_key != key($array)) {
		
			// Advance the pointer
			next($array);
			}
		}

Try with:
$array = array();
$array[0] = 'zero';
$array[1] = 'one';
$array[2] = 'two';
$array[3] = 'three';

// Set the pointer
setPointer($array, 1);

// Display elements
echo current($array); // Outputs 'one'
echo next($array); // Outputs 'two'