PHP array_reverse() 函数原理及实例解析

`<?php
$input = array("php", 4.0, array("green", "red"));
$reversed = array_reverse($input);
$preserved = array_reverse($input, true);

print_r($input);
print_r($reversed);
print_r($preserved);
?>`

array
(
  [0] => php
  [1] => 4
  [2] => array
    (
      [0] => green
      [1] => red
    )

)
array
(
  [0] => array
    (
      [0] => green
      [1] => red
    )

  [1] => 4
  [2] => php
)
array
(
  [2] => array
    (
      [0] => green
      [1] => red
    )

  [1] => 4
  [0] => php
)