PHP中数组值的排名/位置

本文介绍了PHP中数组值的排名/位置的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个具有这些值的数组， Array（[0] => 12 [1] => 17 [2] => 5 [3] => 27 [4] => 5），我需要找出每个值的排名/位置，即

I have an array with these values, Array ( [0] => 12 [1] => 17 [2] => 5 [3] => 27 [4] => 5 ) and I need to find out ranking/position of each value ie,

for 27 - Rank 1 for 17 - Rank 2 for 12 - Rank 3 for 5 - Rank 4 for 5 - Rank 4 (duplicate value in the array)

这些必须与数组顺序相同，因此输出应为

and these need to be in the same order as the array, so that output should be as follow

12 - Rank 3 17 - Rank 2 5 - Rank 4 27 - Rank 1 5 - Rank 4

推荐答案

这应该起作用（包括具有相同等级的重复值）：

This should work (including duplicate values having the same rank):

$values = array(); $values[0] = 5; $values[1] = 12; $values[2] = 19; $values[3] = 9; $values[4] = 5; $ordered_values = $values; rsort($ordered_values); foreach ($values as $key => $value) { foreach ($ordered_values as $ordered_key => $ordered_value) { if ($value === $ordered_value) { $key = $ordered_key; break; } } echo $value . '- Rank: ' . ((int) $key + 1) . '<br/>'; }