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next()函数作用：

php中next()函数的作用是将数组中的内部指针向前移动一位。

next()函数语法：

next(array)

参数：

array：规定要使用的数组。

next()函数使用方法：

例：输出数组中的当前元素和下一个元素的值
<?php
$people = array("Bill", "Steve", "Mark", "David");
echo current($people) . "<br>";
echo next($people);
?>