(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.
This function may
return Boolean FALSE, but may also return a non-Boolean value which
evaluates to FALSE. Please read the section on Booleans for more
information. Use the ===
operator for testing the return value of this
function.
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"
?>
Note: The return value for an empty array is indistinguishable from the return value in case of an array which has a boolean
FALSEfirst element. To properly check the value of the first element of an array which may containFALSEelements, first check the count() of the array, or check that key() is notNULL, after calling reset().