php的数组语法
<?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
echo next($array)."<BR />";
echo reset($array);
?>
$array = array('step one', 'step two', 'step three', 'step four');
// by default, the pointer is on the first element
echo current($array) . "<br />"n"; // "step one"
// skip two steps
echo next($array)."<BR />";
echo reset($array);
?>
reset -- 将数组的内部指针指向第一个单元
详见list() ,each(),[next()对应pre()][next(),each()会导致指针后移]
