date
(PHP 3, PHP 4 )date -- Format a local time/date
Description
string date ( string format [, int timestamp])
Returns a string formatted according to the given format string using the given integer timestamp or the current local time if no timestamp is given. Note: The valid range of a timestamp is typically from Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are the dates that correspond to the minimum and maximum values for a 32-bit signed integer). On windows this range is limited from 01-01-1970 to 19-01-2038. To generate a timestamp from a string representation of the date, you may be able to use strtotime(). Additionally, some databases have functions to convert their date formats into timestamps (such as MySQL's UNIX_TIMESTAMP function).
The following characters are recognized in the format string:
a - "am" or "pm" A - "AM" or "PM" B - Swatch Internet time d - day of the month, 2 digits with leading zeros; i.e. "01" to "31" D - day of the week, textual, 3 letters; e.g. "Fri" F - month, textual, long; e.g. "January" g - hour, 12-hour format without leading zeros; i.e. "1" to "12" G - hour, 24-hour format without leading zeros; i.e. "0" to "23" h - hour, 12-hour format; i.e. "01" to "12" H - hour, 24-hour format; i.e. "00" to "23" i - minutes; i.e. "00" to "59" I (capital i) - "1" if Daylight Savings Time, "0" otherwise. j - day of the month without leading zeros; i.e. "1" to "31" l (lowercase 'L') - day of the week, textual, long; e.g. "Friday" L - boolean for whether it is a leap year; i.e. "0" or "1" m - month; i.e. "01" to "12" M - month, textual, 3 letters; e.g. "Jan" n - month without leading zeros; i.e. "1" to "12" O - Difference to Greenwich time in hours; e.g. "+0200" r - RFC 822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200" (added in PHP 4.0.4) s - seconds; i.e. "00" to "59" S - English ordinal suffix for the day of the month, 2 characters; i.e. "st", "nd", "rd" or "th" t - number of days in the given month; i.e. "28" to "31" T - Timezone setting of this machine; e.g. "EST" or "MDT" U - seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) w - day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday) W - ISO-8601 week number of year, weeks starting on Monday (added in PHP 4.1.0) Y - year, 4 digits; e.g. "1999" y - year, 2 digits; e.g. "99" z - day of the year; i.e. "0" to "365" Z - timezone offset in seconds (i.e. "-43200" to "43200"). The offset for timezones west of UTC is always negative, and for those east of UTC is always positive. Unrecognized characters in the format string will be printed as-is. The "Z" format will always return "0" when using gmdate(). Example 1. date() exampleecho date ("l dS of F Y h:i:s A");
echo "July 1, 2000 is on a " . date ("l", mktime(0,0,0,7,1,2000));
You can prevent a recognized character in the format string from being expanded by escaping it with a preceding backslash. If the character with a backslash is already a special sequence, you may need to also escape the backslash. Example 2. Escaping characters in date()echo date("l \\t\h\e jS"); // prints something like 'Saturday the 8th'
It is possible to use date() and mktime() together to find dates in the future or the past. Example 3. date() and mktime() example $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);
Note: This can be more reliable than simply adding or subtracting the number of seconds in a day or month to a timestamp because of daylight savings time.
Some examples of date() formatting. Note that you should escape any other characters, as any which currently have a special meaning will produce undesirable results, and other characters may be assigned meaning in future PHP versions. When escaping, be sure to use single quotes to prevent characters like \n from becoming newlines. Example 4. date() Formatting /* Today is March 10th, 2001, 5:16:18 pm */
$today = date("F j, Y, g:i a"); // March 10, 2001, 5:16 pm
$today = date("m.d.y"); // 03.10.01
$today = date("j, n, Y"); // 10, 3, 2001
$today = date("Ymd"); // 20010310
$today = date('h-i-s, j-m-y, it is w Day z '); // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$today = date('\i\t \i\s \t\h\e jS \d\a\y.'); // It is the 10th day.
$today = date("D M j G:i:s T Y"); // Sat Mar 10 15:16:08 MST 2001
$today = date('H:m:s \m \i\s\ \m\o\n\t\h'); // 17:03:17 m is month
$today = date("H:i:s"); // 17:16:17
To format dates in other languages, you should use the setlocale() and strftime() functions. See also getlastmod(), gmdate(), mktime(), strftime() and time().
(PHP 3, PHP 4 )date -- Format a local time/date
Description
string date ( string format [, int timestamp])
Returns a string formatted according to the given format string using the given integer timestamp or the current local time if no timestamp is given. Note: The valid range of a timestamp is typically from Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are the dates that correspond to the minimum and maximum values for a 32-bit signed integer). On windows this range is limited from 01-01-1970 to 19-01-2038. To generate a timestamp from a string representation of the date, you may be able to use strtotime(). Additionally, some databases have functions to convert their date formats into timestamps (such as MySQL's UNIX_TIMESTAMP function).
The following characters are recognized in the format string:
a - "am" or "pm" A - "AM" or "PM" B - Swatch Internet time d - day of the month, 2 digits with leading zeros; i.e. "01" to "31" D - day of the week, textual, 3 letters; e.g. "Fri" F - month, textual, long; e.g. "January" g - hour, 12-hour format without leading zeros; i.e. "1" to "12" G - hour, 24-hour format without leading zeros; i.e. "0" to "23" h - hour, 12-hour format; i.e. "01" to "12" H - hour, 24-hour format; i.e. "00" to "23" i - minutes; i.e. "00" to "59" I (capital i) - "1" if Daylight Savings Time, "0" otherwise. j - day of the month without leading zeros; i.e. "1" to "31" l (lowercase 'L') - day of the week, textual, long; e.g. "Friday" L - boolean for whether it is a leap year; i.e. "0" or "1" m - month; i.e. "01" to "12" M - month, textual, 3 letters; e.g. "Jan" n - month without leading zeros; i.e. "1" to "12" O - Difference to Greenwich time in hours; e.g. "+0200" r - RFC 822 formatted date; e.g. "Thu, 21 Dec 2000 16:01:07 +0200" (added in PHP 4.0.4) s - seconds; i.e. "00" to "59" S - English ordinal suffix for the day of the month, 2 characters; i.e. "st", "nd", "rd" or "th" t - number of days in the given month; i.e. "28" to "31" T - Timezone setting of this machine; e.g. "EST" or "MDT" U - seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) w - day of the week, numeric, i.e. "0" (Sunday) to "6" (Saturday) W - ISO-8601 week number of year, weeks starting on Monday (added in PHP 4.1.0) Y - year, 4 digits; e.g. "1999" y - year, 2 digits; e.g. "99" z - day of the year; i.e. "0" to "365" Z - timezone offset in seconds (i.e. "-43200" to "43200"). The offset for timezones west of UTC is always negative, and for those east of UTC is always positive. Unrecognized characters in the format string will be printed as-is. The "Z" format will always return "0" when using gmdate(). Example 1. date() exampleecho date ("l dS of F Y h:i:s A");
echo "July 1, 2000 is on a " . date ("l", mktime(0,0,0,7,1,2000));
You can prevent a recognized character in the format string from being expanded by escaping it with a preceding backslash. If the character with a backslash is already a special sequence, you may need to also escape the backslash. Example 2. Escaping characters in date()echo date("l \\t\h\e jS"); // prints something like 'Saturday the 8th'
It is possible to use date() and mktime() together to find dates in the future or the past. Example 3. date() and mktime() example $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);
Note: This can be more reliable than simply adding or subtracting the number of seconds in a day or month to a timestamp because of daylight savings time.
Some examples of date() formatting. Note that you should escape any other characters, as any which currently have a special meaning will produce undesirable results, and other characters may be assigned meaning in future PHP versions. When escaping, be sure to use single quotes to prevent characters like \n from becoming newlines. Example 4. date() Formatting /* Today is March 10th, 2001, 5:16:18 pm */
$today = date("F j, Y, g:i a"); // March 10, 2001, 5:16 pm
$today = date("m.d.y"); // 03.10.01
$today = date("j, n, Y"); // 10, 3, 2001
$today = date("Ymd"); // 20010310
$today = date('h-i-s, j-m-y, it is w Day z '); // 05-16-17, 10-03-01, 1631 1618 6 Fripm01
$today = date('\i\t \i\s \t\h\e jS \d\a\y.'); // It is the 10th day.
$today = date("D M j G:i:s T Y"); // Sat Mar 10 15:16:08 MST 2001
$today = date('H:m:s \m \i\s\ \m\o\n\t\h'); // 17:03:17 m is month
$today = date("H:i:s"); // 17:16:17
To format dates in other languages, you should use the setlocale() and strftime() functions. See also getlastmod(), gmdate(), mktime(), strftime() and time().
将服务器的时间格式化。语法: string date(string format, int [timestamp]);返回值: 字符串函数种类: 时间日期
内容说明
返回值的字符串依配置的格式来决定。若有传入时间戳记值，则将时间戳记格式化返回；若无传入时间戳记值，则将目前服务器的时间格式化返回。要将日期转为其它的语系格式，应使用setlocale() 及 strftime() 二个函数。字符串格式化的选项如下：
a - "am" 或是 "pm"
A - "AM" 或是 "PM"
d - 几日，二位数字，若不足二位则前面补零; 如: "01" 至 "31"
D - 星期几，三个英文字母; 如: "Fri"
F - 月份，英文全名; 如: "January"
h - 12 小时制的小时; 如: "01" 至 "12"
H - 24 小时制的小时; 如: "00" 至 "23"
g - 12 小时制的小时，不足二位不补零; 如: "1" 至 12"
G - 24 小时制的小时，不足二位不补零; 如: "0" 至 "23"
i - 分钟; 如: "00" 至 "59"
j - 几日，二位数字，若不足二位不补零; 如: "1" 至 "31"
l - 星期几，英文全名; 如: "Friday"
m - 月份，二位数字，若不足二位则在前面补零; 如: "01" 至 "12"
n - 月份，二位数字，若不足二位则不补零; 如: "1" 至 "12"
M - 月份，三个英文字母; 如: "Jan"
s - 秒; 如: "00" 至 "59"
S - 字尾加英文序数，二个英文字母; 如: "th"，"nd"
t - 指定月份的天数; 如: "28" 至 "31"
U - 总秒数
w - 数字型的星期几，如: "0" (星期日) 至 "6" (星期六)
Y - 年，四位数字; 如: "1999"
y - 年，二位数字; 如: "99"
z - 一年中的第几天; 如: "0" 至 "365"
其它不在上列的字符则直接列出该字符。 <?
echo date("Y-m-d H:i:s");
?>
m-month
......
date("ymdhis");
显示为20020703012344
也可以date("y")
显示2002
date("h")
显示当前小时
以此类推，使用很方便
取当前时间，直接使用函数date()，
要用格式化字串
一般用 date("y-m-d h:i:s")即可。
$time = time();
转换成显示格式：
$str = date("Y-m-d H:i:s", $time);
$str = date("Y年m月d日 H:i:s", $time);
...
你自己喜欢什么格式就怎么写啦