initial commit

src/library/time.php

@@ -0,0 +1,45 @@
+<?php
+
+class Time
+{
+  public static function ago(int $time)
+  {
+    $diff = time() - $time;
+
+    if ($diff < 1)
+    {
+      return _('now');
+    }
+
+    $values =
+    [
+      365 * 24 * 60 * 60  =>  _('year'),
+       30 * 24 * 60 * 60  =>  _('month'),
+            24 * 60 * 60  =>  _('day'),
+                 60 * 60  =>  _('hour'),
+                      60  =>  _('minute'),
+                       1  =>  _('second')
+    ];
+
+    $plural = [
+      _('year')   => _('years'),
+      _('month')  => _('months'),
+      _('day')    => _('days'),
+      _('hour')   => _('hours'),
+      _('minute') => _('minutes'),
+      _('second') => _('seconds')
+    ];
+
+    foreach ($values as $key => $value)
+    {
+      $result = $diff / $key;
+
+      if ($result >= 1)
+      {
+        $round = round($result);
+
+        return sprintf('%s %s ago', $round, $round > 1 ? $plural[$value] : $value);
+      }
+    }
+  }
+}