PHP prev() function is used to move the current pointer of an array to the previous position and return the value on that position. It is an inbuilt function of PHP.
$array is a PHP array.
<?php $arr1 = array("apple","orange","banana","fig",); $next_value=next($arr1); // it returns value on next position from current pointer i.e. orange $previous_value=prev($arr1); // it will return value on previous position from current pointer i.e. apple echo "Next value is $next_value <br>"; echo "Previous value is $previous_value"; ?>