(PHP 4, PHP 5, PHP 7)
reset — Set the internal pointer of an array to its first element
   reset() rewinds array's internal
   pointer to the first element and returns the value of the first array
   element.
  
arrayThe input array.
   Returns the value of the first array element, or FALSE if the array is
   empty.
  
Example #1 reset() example
<?php
$array = array('step one', 'step two', 'step three', 'step four');
// by default, the pointer is on the first element
echo current($array) . "<br />\n"; // "step one"
// skip two steps
next($array);
next($array);
echo current($array) . "<br />\n"; // "step three"
// reset pointer, start again on step one
reset($array);
echo current($array) . "<br />\n"; // "step one"
?>