Human readable duration format 转换时间格式format_duration

Author: uuk020

format_duration/format_duration.php

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+<?php
+/**
+ * Human readable duration format 转换时间格式
+ * Your task in order to complete this Kata is to write a function which formats a duration, given as a number of seconds, in a human-friendly way.
+ * The function must accept a non-negative integer. If it is zero, it just returns "now". Otherwise,
+ * the duration is expressed as a combination of years, days, hours, minutes and seconds.
+ * formatDuration(62)    // returns "1 minute and 2 seconds"
+ * formatDuration(3662)  // returns "1 hour, 1 minute and 2 seconds"
+ */
+function format_duration($seconds)
+{
+  //排除0的情况
+  if ($seconds == 0) return 'now';
+  // 时间计算数组
+  $date = [
+      'year' => 60 * 60 * 24 * 365,
+      'day' => 60 * 60 * 24,
+      'hour' => 60 * 60,
+      'minute' => 60,
+      'second' => 1
+  ];
+  $arr = [];
+  // 循环时间数组
+  foreach ($date as $k => $v) {
+       // 计算时间
+       $time = floor($seconds / $v);
+       // 若$time不等于0 则键加入s
+       if ($time != 0) {
+           if ($time > 1) {
+               $k = $k . 's';
+            }
+            // $arr 数组新增计算出的字符串元素
+           $arr[] = $time . ' ' . $k;
+       }
+       // 减去计算好时间, 循环再算其他分钟秒
+       $seconds = $seconds - $v * $time;
+  }
+  // 若时间格式数组大于1
+  if (count($arr) > 1) {
+      // 选取最后一个元素
+      $last = array_slice($arr, -1, 1);
+      unset($arr[count($arr) - 1]);
+      // 拼接字符串
+      $secondTime = ' and ' . $last[0];
+      // 数组转换为字符串
+      return implode(', ', $arr) . $secondTime;
+  }
+  return implode(', ', $arr);
+
+}