DateFormat PHP Class (php 处理日期)

代码：

class FormatDate

{

var $theTime;

function FormatDate($string)

{

//Set constructor

$this->theTime = $string;

}

//Returns numerical day

function Day() {return date("j", $this->theTime); }

//Returns weekday

function WeekDay() { return date("l", $this->theTime); }

//Returns full month

function Month(){return date("F", $this->theTime); }

//Returns short-hand month

function MonthShort() { return date("M", $this->theTime); }

//Numeric for month

function MonthNum() { return date("n", $this->theTime); }

//Full 4 digit year

function YearFull() { return date("Y", $this->theTime); }

//Short 2 digit year

function Year() { return date("y", $this->theTime); }

//24 Hr with Seconds

function MilitaryFull(){return date("G:i:s", $this->theTime); }

//24 Hr without Seconds

function Military(){return date("G:i", $this->theTime); }

//Standard with seconds

function StandardFull(){return date("g:i:s a", $this->theTime); }

//Standard without seconds

function Standard(){return date("g:i a", $this->theTime); }

//Date & Month & Year Full

function TextDate(){$string = $this->Month()." ".$this->Day()." ".$this->YearFull();

return $string;

}

//Date & Month & Year Shorthand

function TextDateShort(){$string = $this->MonthShort()." ".$this->Day()." ".$this->Year();

return $string;

}

//Numerical Date & Month & Year

function NumDate(){$string = $this->MonthNum()."/".$this->Day()."/".$this->YearFull();

return $string;

}

//Numerical Date & Month & Year Shorthand

function NumDateShort(){$string = $this->MonthNum()."/".$this->Day()."/".$this->Year();

return $string;

}

//Month & Day Full

function MonthDay(){$string = $this->Month()." ".$this->Day();

return $string;

}

//Month & Day Short

function MonthDayShort(){$string = $this->MonthShort()." ".$this->Day();

return $string;

}

function TimeSince($old_stamp) {

$difference = $this->theTime - $old_stamp;

$loop = true;

while($loop) {

if(round($difference/3153600, 2) >= 1) { return "Over a year..."; }

elseif(round($difference/2592000, 2) >= 2) { return "Over ".round($difference/2592000,0)." months ago..."; }

elseif(round($difference/2592000, 2) >= 1.20) { return "Over a month ago..."; }

elseif(round($difference/604800, 2) >= 2) { return "Over ".round($difference/604800,0)." weeks ago.."; }

elseif(round($difference/604800, 2) >= 1.20) { return "Over a week ago.."; }

elseif(round($difference/86400, 2) >= 1.9) { return "Over a few days ago...";}

elseif(round($difference/3600, 2) >= 3) { return "Just a few hours ago.."; }

elseif(round($difference/3600, 2) >= 8) { return "About half a day ago..."; }

elseif(round($difference/3600, 2) < 1) { return "Less than an hour ago..."; }

elseif(round($difference/86400, 2) < 1.9) { return "About a day ago..."; }

elseif(round($difference/86400, 2) < 6 ) { return "Less than a week ago..."; }

elseif(round($difference/604800, 2) < 1.20) { return "About a week ago.."; }

elseif(round($difference/2592000, 2) < 1.20) { return "About a month ago..."; }

else{ return "Error"; }

$loop = false;

}

}

}

实例：

$date = new FormatDate(time());

echo $date->Day().'
';

// 2

echo $date->WeekDay().'
';

// Tuesday

echo $date->Month().'
';

// August

echo $date->MonthShort().'
';

// Aug

echo $date->MonthNum().'
';

// 8

echo $date->YearFull().'
';

// 2011

echo $date->Year().'
';

// 11

echo $date->MilitaryFull().'
';

// 9:08:40

echo $date->Military().'
';

// 9:08

echo $date->StandardFull().'
';

// 9:08:40 am

echo $date->Standard().'
';

// 9:08 am

echo $date->TextDate().'
';

// August 2 2011

echo $date->TextDateShort().'
';

// Aug 2 11

echo $date->NumDate().'
';

// 8/2/2011

echo $date->NumDateShort().'
';

// 8/2/11

echo $date->MonthDay().'
';

// August 2

echo $date->MonthDayShort().'
';

// Aug 2

echo $date->TimeSince(time()).'
';

// Less than an hour ago...

DateFormat Class Documentation

Initialize Class

$date = new FormatDate(time());

Numerical Day

$date->Day();

Text Day

$date->WeekDay();

Month (Full)

$date->Month();

Month (Short)

$date->MonthShort();

Month (Numerical)

$date->MonthNum();

Year (Full)

$date->YearFull();

Year (Short)

$date->Year();

Military (Seconds)

$date->MilitaryFull();

Military (No seconds)

$date->Military();

Standard (Full)

$date->StandardFull();

Standard

$date->Standard();

Text Date (Full)

$date->TextDate();

Text Date (Short)

$date->TextDateShort();

Numerical Date (Full)

$date->NumDate();

Numerical Date (Short)

$date->NumDateShort();

Month and Day (Full)

$date->MonthDay();

Month and Day (Short)

$date->MonthDayShort();

Time Since

$date->TimeSince($timestamp);

格式： http://php.net/manual/en/function.date.php

format

character

Description

Example returned values

Day

---

---

d

Day of the month, 2 digits with leading zeros

01

to 31

D

A textual representation of a day, three letters

Mon

through Sun

j

Day of the month without leading zeros

1

to 31

l

(lowercase 'L')

A full textual representation of the day of the week

Sunday

through Saturday

N

ISO-8601 numeric representation of the day of the week (added in

PHP 5.1.0)

1

(for Monday) through 7

(for Sunday)

S

English ordinal suffix for the day of the month, 2 characters

st

, nd

, rd

or

th

. Works well with j

w

Numeric representation of the day of the week

0

(for Sunday) through 6

(for Saturday)

z

The day of the year (starting from 0)

0

through 365

Week

---

---

W

ISO-8601 week number of year, weeks starting on Monday (added in PHP 4.1.0)

Example: 42

(the 42nd week in the year)

Month

---

---

F

A full textual representation of a month, such as January or March

January

through December

m

Numeric representation of a month, with leading zeros

01

through 12

M

A short textual representation of a month, three letters

Jan

through Dec

n

Numeric representation of a month, without leading zeros

1

through 12

t

Number of days in the given month

28

through 31

Year

---

---

L

Whether it's a leap year

1

if it is a leap year, 0

otherwise.

o

ISO-8601 year number. This has the same value as

Y

, except that if the ISO week number

(W

) belongs to the previous or next year, that year

is used instead. (added in PHP 5.1.0)

Examples: 1999

or 2003

Y

A full numeric representation of a year, 4 digits

Examples: 1999

or 2003

y

A two digit representation of a year

Examples: 99

or 03

Time

---

---

a

Lowercase Ante meridiem and Post meridiem

am

or pm

A

Uppercase Ante meridiem and Post meridiem

AM

or PM

B

Swatch Internet time

000

through 999

g

12-hour format of an hour without leading zeros

1

through 12

G

24-hour format of an hour without leading zeros

0

through 23

h

12-hour format of an hour with leading zeros

01

through 12

H

24-hour format of an hour with leading zeros

00

through 23

i

Minutes with leading zeros

00

to 59

s

Seconds, with leading zeros

00

through 59

u

Microseconds (added in PHP 5.2.2)

Example: 654321

Timezone

---

---

e

Timezone identifier (added in PHP 5.1.0)

Examples: UTC

, GMT

, Atlantic/Azores

I

(capital i)

Whether or not the date is in daylight saving time

1

if Daylight Saving Time, 0

otherwise.

O

Difference to Greenwich time (GMT) in hours

Example: +0200

P

Difference to Greenwich time (GMT) with colon between hours and minutes (added in PHP 5.1.3)

Example: +02:00

T

Timezone abbreviation

Examples: EST

, MDT

...

Z

Timezone offset in seconds. The offset for timezones west of UTC is always

negative, and for those east of UTC is always positive.

-43200

through 50400

Full Date/Time

---

---

c

ISO 8601 date (added in PHP 5)

2004-02-12T15:19:21+00:00

r

» RFC 2822

formatted date

Example: Thu, 21 Dec 2000 16:01:07 +0200

U

Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)

See also time()

Unrecognized characters in the format string will be printed

as-is. The Z

format will always return

0

when using gmdate()

.

Note

:

Since this function only accepts integer

timestamps the

u

format character is only useful when using the

date_format()

function with user based timestamps

created with date_create()

.

timestamp

The optional timestamp

parameter is an

integer

Unix timestamp that defaults to the current

local time if a timestamp

is not given. In other

words, it defaults to the value of time()

.