一个显示多少时间之前的函数

收藏一个老外写的，专门用来显示比如“2 hours ago,1 hour ago"之类时间的函数，
请注意其中对英文单复数时间的处理：
<?php

function Timesince($original) {
// array of time period chunks
$chunks = array(
array(60 * 60 * 24 * 365 , \’year\’),
array(60 * 60 * 24 * 30 , \’month\’),
array(60 * 60 * 24 * 7, \’week\’),
array(60 * 60 * 24 , \’day\’),
array(60 * 60 , \’hour\’),
array(60 , \’min\’),
array(1 , \’sec\’),
);

$today = time(); /* Current unix time */
$since = $today – $original;

// $j saves performing the count function each time around the loop
for ($i = 0, $j = count($chunks); $i < $j; $i++) {

$seconds = $chunks[$i][0];
$name = $chunks[$i][1];

// finding the biggest chunk (if the chunk fits, break)
if (($count = floor($since / $seconds)) != 0) {
break;
}
}

$print = ($count == 1) ? \’1 \’.$name : \"$count {$name}s\";

if ($i + 1 < $j) {
// now getting the second item
$seconds2 = $chunks[$i + 1][0];
$name2 = $chunks[$i + 1][1];

// add second item if its greater than 0
if (($count2 = floor(($since – ($seconds * $count)) / $seconds2)) != 0) {
$print .= ($count2 == 1) ? \’, 1 \’.$name2 : \" $count2 {$name2}s\";
}
}
return $print;
}

?>

  注意传入的是UNIX类型的时间，如果数据库中传入的是TIMESTAMP类型，可以转换下
SELECT id, username, UNIX_TIMESTAMP(joined_data) from UserTable;