php中localtime与getdate的区别？

Question

刚刚看文档，感觉这两个函数很相似，都是根据时间戳返回日期，时间等信息的数组，而且从返回的信息上来看getdate完全可以取代localtime，那么请问localtime存在的意义是什么呢？

Answer 1

localtime 获取的数组中，年是从 1900 开始的

<?php
$localtime = localtime();
$localtime_assoc = localtime(time(), true);
//print_r($localtime);
print_r($localtime_assoc);
?>
    
<?php
$today = getdate();
print_r($today);
?>

Array
(
[tm_sec] => 37
[tm_min] => 22
[tm_hour] => 3
[tm_mday] => 9
[tm_mon] => 9
[tm_year] => 116
[tm_wday] => 0
[tm_yday] => 282
[tm_isdst] => 0
)

Array
(
[seconds] => 37
[minutes] => 22
[hours] => 3
[mday] => 9
[wday] => 0
[mon] => 10
[year] => 2016
[yday] => 282
[weekday] => Sunday
[month] => October
[0] => 1475983357
)