代码编辑器：
x
1
2
$people = array("Peter", "Joe", "Glenn", "Cleveland");3
echo current($people) . "<br>";4
echo next($people) . "<br>";5
echo prev($people);6
$people = array("Peter", "Joe", "Glenn", "Cleveland");echo current($people) . "<br>";echo next($people) . "<br>";echo prev($people);