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Home php教程 PHP源碼 PHP :time(),date(),mktime()

PHP :time(),date(),mktime()

Jun 08, 2016 pm 05:28 PM
date mktime quot strftime

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日期與時間函數(shù)庫{經(jīng)常會忘卻掉}
checkdate : 驗證日期的正確性。
date : 將服務器的時間格式化。
strftime : 將服務器的時間本地格式化。
getdate : 獲得時間及日期信息。
gettimeofday : 取得目前時間。
gmdate : 取得目前與 GMT 差后的時間。
easter_date : 計算復活節(jié)日期。
easter_days : 計算復活節(jié)與三月廿一日之間日期數(shù)。
mktime : 取得 UNIX 時間戳記。
gmmktime : 取得 UNIX 時間戳記的格林威治時間。
time : 取得目前時間的 UNIX 時間戳記。
microtime : 取得目前時間的 UNIX 時間戳記的百萬分之一秒值。

  checkdate 驗證日期的正確性。
語法: int checkdate(int month, int day, int year);
返回值: 整數(shù)
函數(shù)種類: 時間日期
內容說明 若日期是有效的則返回 true,若日期有問題,則返回 false。本函數(shù)可以用來檢查日期是否有效。有效范圍如下:
年 為 0 至 32767 年
月 為 1 至 12 月
日 則隨著月份及閏年變化
date 將服務器的時間格式化。
語法: string date(string format, int [timestamp]);
返回值: 字符串
函數(shù)種類: 時間日期
內容說明返回值的?字符串依配置的格式來決定。若有傳入時間戳記值,則將時間戳記格式化返回;若無傳入時間戳記值,則將目前服務器的時間格式化返回。要將日期轉為其它的語系格式,應使用setlocale() 及 strftime() 二個函數(shù)。字符串格式化的選項如下:
a - "am" 或是 "pm"
A - "AM" 或是 "PM"
d - 幾日,二位數(shù)字,若不足二位則前面補零; 如: "01" 至 "31"
D - 星期幾,三個英文字母; 如: "Fri"
F - 月份,英文全名; 如: "January"
h - 12 小時制的小時; 如: "01" 至 "12"
H - 24 小時制的小時; 如: "00" 至 "23"
g - 12 小時制的小時,不足二位不補零; 如: "1" 至 12"
G - 24 小時制的小時,不足二位不補零; 如: "0" 至 "23"
i - 分鐘; 如: "00" 至 "59"
j - 幾日,二位數(shù)字,若不足二位不補零; 如: "1" 至 "31"
l - 星期幾,英文全名; 如: "Friday"
m - 月份,二位數(shù)字,若不足二位則在前面補零; 如: "01" 至 "12"
n - 月份,二位數(shù)字,若不足二位則不補零; 如: "1" 至 "12"
M - 月份,三個英文字母; 如: "Jan"
s - 秒; 如: "00" 至 "59"
S - 字尾加英文序數(shù),二個英文字母; 如: "th","nd"
t - 指定月份的天數(shù); 如: "28" 至 "31"
U - 總秒數(shù)
w - 數(shù)字型的星期幾,如: "0" (星期日) 至 "6" (星期六)
Y - 年,四位數(shù)字; 如: "1999"
y - 年,二位數(shù)字; 如: "99"
z - 一年中的第幾天; 如: "0" 至 "365"
其它不在上列的字符則直接列出該字符。
使用范例,范例一:

print(date( "l dS of F Y h:i:s A" ));
print("July 1, 2000 is on a " . date("l", mktime(0,0,0,7,1,2000)));
?>

  范例二:

$tomorrow = mktime(0,0,0,date("m") ,date("d")+1,date("Y"));
$lastmonth = mktime(0,0,0,date("m")-1,date("d"), date("Y"));
$nextyear = mktime(0,0,0,date("m"), date("d", date("Y")+1);
?>

  參考 gmdate() mktime()
strftime 將服務器的時間本地格式化。
語法: string strftime(string format, int [timestamp]);
返回值: 字符串
函數(shù)種類: 時間日期
內容說明返回值的字符串依配置的格式來決定。若有傳入時間戳記值,則將時間戳記格式化返回;若無傳入時間戳記值,則將目前服務器的時間本地格式化返回。月份或者星期名稱隨著本地語系配置 setlocale() 的不同而改變。
返回的字符串可以依下列的格式而定:
%a 星期幾的縮寫。
%A 星期幾的全名。
%b 月份名稱的縮寫。
%B 月份名稱的全名。
%c 本地端日期時間較佳表示字符串。
%d 用數(shù)字表示本月的第幾天 (范圍為 00 至 31)。
%H 用 24 小時制數(shù)字表示小時數(shù) (范圍為 00 至 23)。
%I 用 12 小時制數(shù)字表示小時數(shù) (范圍為 01 至 12)。
%j 以數(shù)字表示當年度的第幾天 (范圍為 001 至 366)。
%m 月份的數(shù)字 (范圍由 1 至 12)。
%M 分鐘。
%p 以 'AM' 或 'PM' 表示本地端時間。
%S 秒數(shù)。
%U 數(shù)字表示為本年度的第幾周,第一個星期由第一個周日開始。
%W 數(shù)字表示為本年度的第幾周,第一個星期由第一個周一開始。
%w 用數(shù)字表示本周的第幾天 ( 0 為周日)。
%x 不含時間的日期表示法。
%X 不含日期的時間表示法。
%y 二位數(shù)字表示年份 (范圍由 00 至 99)。
%Y 完整的年份數(shù)字表示,即四位數(shù)。
%Z 時區(qū)或名稱縮寫。
%% % 字符。
使用范例
setlocale ("LC_TIME", "C");
print(strftime("%A in Finnish is "));
setlocale ("LC_TIME", "fi");
print(strftime("%A, in French "));
setlocale ("LC_TIME", "fr");
print(strftime("%A and in German "));
setlocale ("LC_TIME", "de");
print(strftime("%A.n"));
?>

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