January 2021
Intermediate to advanced
505 pages
9h 45m
Chinese
Content preview from PHP编程：第4版
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462
｜
附录
A
函数参考
和
alphabet
是不相等的。
返回从偏移量
offset
开始的
string
子集的长度，检查的最大长度为
length
个字符，直到
找到
characters
中的字符的第一个实例。
按照第一个参数中的格式
format
和当前区域设定格式化日期和时间。如果没有指定第二
个参数，会使用当前的时间和日期。下面的字符是
format
中可以识别的
：
%a
当前区域星期几的三字母简写，例如，
Mon
%A
当前区域星期几的全称，例如，
Monday
%b
当前区域月份的三字母简写，例如，
Aug
%B
当前区域月份的全称，例如，
August
%c
当前区域首选的日期时间表达方式
%C
以最后两位数显示的世纪
%d
月份中的第几天，带前导
0
。例如，
01~31
%D
和
%m/%d/%y
一样
%e
月份中的第几天，带前导空格。例如，
1~31
%h %b
的别名
%H
以
24
小时格式显示的两位小时数，带前导
0
，例如，
00~23
%I
以
12
小时格式显示的两位小时数，例如，
1~12
%j
年份中的第几天，带前导零，例如，
001~366
%m
月份，带前导
0
，例如，
01~12
%M
两位数的分钟数
%n
换行符（
\n
）
%p
指定时间的
am
或
pm
%r
和
%I:%M:%S %p
一样
%R
和
%H:%M:%S
一样
%S
两位数字表示的秒
%t
Tab
字符（
\t
）
%T
和
%H:%M:%S
一样
%u
星期几的数字表达，从
1
开始表示星期一
%U
本年的第几周，从第一周的第一个星期天作为第一天开始
%V
本年第几周的
ISO-8601:1988
格式，第一周是本年第一个至少还有四天的星期，
星期一作为每周的第一天 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.