欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

php自定义二维数组排序函数array_orderby用法示例

程序员文章站 2022-06-28 11:08:19
本文实例讲述了php自定义二维数组排序函数array_orderby用法。分享给大家供大家参考,具体如下:

本文实例讲述了php自定义二维数组排序函数array_orderby用法。分享给大家供大家参考,具体如下:

<?php
/**
i came up with an easy way to sort database-style results. this does what example 3 does, except it takes care of creating those intermediate arrays for you before passing control on to array_multisort(). 
*/
function array_orderby()
{
  $args = func_get_args();
  $data = array_shift($args);
  foreach ($args as $n => $field) {
    if (is_string($field)) {
      $tmp = array();
      foreach ($data as $key => $row)
        $tmp[$key] = $row[$field];
      $args[$n] = $tmp;
      }
  }
  $args[] = &$data;
  call_user_func_array('array_multisort', $args);
  return array_pop($args);
}
/*
the sorted array is now in the return value of the function instead of being passed by reference.
*/
$data[] = array('volume' => 67, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 1);
$data[] = array('volume' => 85, 'edition' => 6);
$data[] = array('volume' => 98, 'edition' => 2);
$data[] = array('volume' => 86, 'edition' => 6);
$data[] = array('volume' => 67, 'edition' => 7);
// pass the array, followed by the column names and sort flags
$sorted = array_orderby($data, 'volume', sort_desc, 'edition', sort_asc);
print_r($sorted)
?>

运行结果:

array
(
  [0] => array
    (
      [volume] => 98
      [edition] => 2
    )
  [1] => array
    (
      [volume] => 86
      [edition] => 1
    )
  [2] => array
    (
      [volume] => 86
      [edition] => 6
    )
  [3] => array
    (
      [volume] => 85
      [edition] => 6
    )
  [4] => array
    (
      [volume] => 67
      [edition] => 2
    )
  [5] => array
    (
      [volume] => 67
      [edition] => 7
    )
)

ps:这里再为大家推荐一款关于排序的演示工具供大家参考:

在线动画演示插入/选择/冒泡/归并/希尔/快速排序算法过程工具:

更多关于php相关内容感兴趣的读者可查看本站专题:《php数据结构与算法教程》、《php程序设计算法总结》、《php字符串(string)用法总结》、《php数组(array)操作技巧大全》、《php常用遍历算法与技巧总结》及《php数学运算技巧总结

希望本文所述对大家php程序设计有所帮助。