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PHP - Manual: date_parse

2024-11-15

date_parse

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

date_parse — 返回指定日期/时间的详细信息的关联数组

说明

date_parse(string $datetime): array

参数

datetime

Date/time 接受的格式以 DateTimeImmutable::__construct() 为准。

返回值

成功时返回 array，数组中包含指定日期/时间的信息。 或者在失败时返回 false。

错误／异常

如果 date/time 的格式有错误，则返回数组的 'errors' 键将包含错误信息。

更新日志

版本 说明
7.2.0 返回数组的 zone 键现在代表秒，而不是分钟。 并且正负符号已反转，例如：之前是 -120 现在是 7200。

范例

示例 #1 date_parse() 示例

<?php
print_r(date_parse("2006-12-12 10:00:00.5"));
?>

以上例程会输出：

Array
(
    [year] => 2006
    [month] => 12
    [day] => 12
    [hour] => 10
    [minute] => 0
    [second] => 0
    [fraction] => 0.5
    [warning_count] => 0
    [warnings] => Array()
    [error_count] => 0
    [errors] => Array()
    [is_localtime] =>
)

解析后返回的关联数组不受 相对格式 影响，相对格式的信息会被解析到 "relative" 键。

示例 #2 date_parse() 使用相对格式

<?php
print_r(date_parse("2006-12-12 10:00:00.5 +1 week +1 hour"));
?>

以上例程会输出：

Array
(
    [year] => 2006
    [month] => 12
    [day] => 12
    [hour] => 10
    [minute] => 0
    [second] => 0
    [fraction] => 0.5
    [warning_count] => 0
    [warnings] => Array
        (
        )

    [error_count] => 0
    [errors] => Array
        (
        )

    [is_localtime] =>
    [relative] => Array
        (
            [year] => 0
            [month] => 0
            [day] => 7
            [hour] => 1
            [minute] => 0
            [second] => 0
        )

)

参见

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User Contributed Notes 11 notes

up
14
admin at torntech dot com
11 years ago
A warning to others. Some keys will return with a default value where others will return as false if the date string has it omitted. Unsure if this is a bug or feature, but hopefully this will save someone some time.
<?php
///Example
$input = "Feb 2010";
$info = date_parse($input);
var_dump($info);

/*Returns:
array(12) {
    ["year"]=> int(2010)
    ["month"]=> int(2)
    ["day"]=> int(1)    //<---expected false like below
    ["hour"]=> bool(false)
    ["minute"]=> bool(false)
    ["second"]=> bool(false)
    ["fraction"]=> bool(false)
    ["warning_count"]=> int(0)
    ["warnings"]=> array(0) { }
    ["error_count"]=> int(0)
    ["errors"]=> array(0) { }
    ["is_localtime"]=> bool(false)
}*/
?>
up
8
alvaro at demogracia dot com
11 years ago
Be aware that date_parse() is happy with just a time zone and it can be pretty counter-intuitive. E.g.:

<?php
var_dump( date_parse('Europe/Madrid') );
?>

... prints an array where year, month, day... are FALSE. But so do these:

<?php
var_dump( date_parse('A') );
var_dump( date_parse('B') );
var_dump( date_parse('X') );
?>

Don't forget to further validate date_parse()'s output even when it isn't FALSE and the 'errors' key is empty.
up
2
paul at juniperwebcraft dot com
5 years ago
It's sometimes useful to be able to store incomplete dates, for example when all you know of someone's birthdate is the year or the month and day.

date_parse() handles (and MySQL accepts) dates containing zero-value elements such as "2017-00-00" and "0000-03-29", leaving it up to the parent application to determine when to require and how to handle missing date elements. date_parse() correctly reports zero values for zero-value date elements, reports an 'invalid date' warning, and does not report an error.

Example 1: Year only
<?php print_r( date_parse( '2017-00-00' ) );?>
generates:
<?php
Array
(
    [year] => 2017
    [month] => 0
    [day] => 0
    [hour] =>
    [minute] =>
    [second] =>
    [fraction] =>
    [warning_count] => 1
    [warnings] => Array
        (
            [11] => The parsed date was invalid
        )

    [error_count] => 0
    [errors] => Array
        (
        )

    [is_localtime] =>
)
?>

Example 2: Month and day only
<?php print_r( date_parse( '0000-03-29' ) )?>
generates:
<?php
Array
(
    [year] => 0
    [month] => 3
    [day] => 29
    [hour] =>
    [minute] =>
    [second] =>
    [fraction] =>
    [warning_count] => 1
    [warnings] => Array
        (
            [11] => The parsed date was invalid
        )

    [error_count] => 0
    [errors] => Array
        (
        )

    [is_localtime] =>
)
?>

However, simply omitting date elements gives PHP too much discretion in second-guessing our intentions:

Example 3: Truncated date:
<?php print_r( date_parse( '2017-03' ) )?>
generates:
<?php
Array
(
    [year] => 2017
    [month] => 3
    [day] => 1
    [hour] =>
    [minute] =>
    [second] =>
    [fraction] =>
    [warning_count] => 0
    [warnings] => Array
        (
        )

    [error_count] => 0
    [errors] => Array
        (
        )

    [is_localtime] =>
)?>
In this case, PHP supplies a day value of 1 and does not report a warning.

Similarly, this feature of accepting zero date elements does not carry over to timestamps:

<?php $dDate = strtotime( '2017-03-00' );
print_r( getdate( $dDate ) ); ?>

displays:

<?php Array
(
    [seconds] => 0
    [minutes] => 0
    [hours] => 0
    [mday] => 28
    [wday] => 2
    [mon] => 2
    [year] => 2017
    [yday] => 58
    [weekday] => Tuesday
    [month] => February
    [0] => 1488268800
)
?>
In this case, PHP interprets the "zeroth" day of March to be the last day of February.
up
1
edg at greenberg dot org
3 years ago
Passing "YYYY-MM" results in a valid date. Be careful to validate that your submitted date passed YOUR requirements.
up
0
y dot adounis at gmail dot com
2 years ago
Developers, be aware that using "now" will return an empty array, ex :

<?php
date_parse("now");
?>

Will return :

Array
(
    [year] =>
    [month] =>
    [day] =>
    [hour] =>
    [minute] =>
    [second] =>
    [fraction] =>
    [warning_count] => 0
    [warnings] => Array
        (
        )

    [error_count] => 0
    [errors] => Array
        (
        )

    [is_localtime] =>
)
up
0
ryan_a_martin at yahoo dot com
11 years ago
See checkdate() at http://php.net/manual/en/function.checkdate.php for Gregorian date validation.
up
0
gpayne at galenaparkisd com
14 years ago
Careful - date_parse is perfectly happy with something like this:

date_parse("2006-2-31");
up
-2
adamm at extratech dot com
9 years ago
A warning to some
<?php
$time = "00:14:38"
$parse_date = date_parse($time);
echo var_dump($parse_date) ."<br>";
//here you will get what you expect

$time = "-00:14:38"
$parse_date = date_parse($time);
echo var_dump($parse_date) ."<br>";
//here you will recieve hours minutes and seconds as booleans and as false and you will get error set to "Unexpected character"

$time = "00:-14:38"
$parse_date = date_parse($time);
echo var_dump($parse_date) ."<br>";
//here you will recieve the same as the above

$time = "00:14:-38"
$parse_date = date_parse($time);
echo var_dump($parse_date) ."<br>";
//here you will receive hours as 00 minutes as 14 and seconds as 0. The error will get set as the same as above. Meaning "Unexpected character"
?>
up
-5
alan at wilcoxengineering dot com
12 years ago
Caution: date_parse expects months 1..12 only.

date_parse("13/1/5769")  for  month=13, Ehul in Jewish calendar, results in  month==3 instead of month==13.

It does, however, report the error array showing "Unexpected Character."

It would be nice if date_parse could handle the months properly (just report back a "13" for the month). The older approach of substr() is my workaround.
up
-4
eugene at ultimatecms dot co dot za
12 years ago
<?php

$ida = '091122671325';
$idb = '091123671325';

// This function will match the identity number up to the day, but only for a maximum of 99years+364days.
// Will not work when checking persons older than 100years-1day.

function idtodate($id)
{
        $year = date("Y");
        $month = date("m");
        $day = date("d");

        $nc = substr($year, 0, 2);
        $ny = substr($year, 2, 2);

        $y = substr($id, 0, 2);
        $m = substr($id, 2, 2);
        $d = substr($id, 4, 2);

        if($y.$m.$d <= $ny.$month.$day-1) {
                $newc = $nc;
        } else {
                $newc = $nc-1;
        }

        $new = $newc.$y;

        return array('year' => $new, 'month' => $m, 'day' => $d);
}

echo 'ID: '.$ida.'<br>';
print_r(idtodate($ida));

echo '<br><br>';

echo 'ID: '.$idb.'<br>';
print_r(idtodate($idb));

?>

Output:
1. If the year-month-day is smaller than today (2009-11-23), but bigger than 1999: year => 2009
ID: 091122671325
Array ( [year] => 2009 [month] => 11 [day] => 22 )

2. If the year-month-day is the same as, or bigger than today, but smaller than 2000: year => 1909
ID: 091123671325
Array ( [year] => 1909 [month] => 11 [day] => 23 )
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官方地址：https://www.php.net/manual/en/function.date-parse.php

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