php教程

date_parse_from_format

(PHP 5 >= 5.3.0, PHP 7)

date_parse_from_format — Get info about given date formatted according to the specified format

说明

date_parse_from_format ( string $format , string $date ) : array

Returns associative array with detailed info about given date.

参数

format

Format accepted by DateTime::createFromFormat().

date

String representing the date.

返回值

Returns associative array with detailed info about given date.

更新日志

版本 说明
7.2.0 The zone element of the returned array represents seconds instead of minutes now, and its sign is inverted. For instance -120 is now 7200.

范例

Example #1 date_parse_from_format() example

<?php
$date = "6.1.2009 13:00+01:00";
print_r(date_parse_from_format("j.n.Y H:iP", $date));
?>

以上例程会输出：

Array
(
    [year] => 2009
    [month] => 1
    [day] => 6
    [hour] => 13
    [minute] => 0
    [second] => 0
    [fraction] => 
    [warning_count] => 0
    [warnings] => Array
        (
        )

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

    [is_localtime] => 1
    [zone_type] => 1
    [zone] => 3600
    [is_dst] => 
)

参见

User Contributed Notes

gilles dot migliori at gmail dot com 15-Oct-2018 08:48
$date = "10 October 2018 19:30 pm";
print_r (date_parse_from_format("j F Y G:i a", $date));

Output:

Array (
    [year]          => 2018
    [month]         => 10
    [day]           => 10
    [hour]          => 31
    [minute]        => 30
    [second]        => 0
    [fraction]      =>
    [warning_count] => 1
    [warnings]      => Array (
                        [24] => The parsed time was invalid
                    )
    [error_count]   => 0
    [errors]        => Array ( )
    [is_localtime]  =>
)

19:30 pm is invalid, 24-hour format of an hour can't be used with am/pm

must be replaced with:

$date = "10 October 2018 19:30";
print_r (date_parse_from_format("j F Y G:i", $date));

or:

$date = "10 October 2018 7:30 pm";
print_r (date_parse_from_format("j F Y g:i a", $date));
Archetrix 08-Sep-2014 08:18
For use in Versions prior V5.3:

<?php
if (!function_exists('date_parse_from_format')) {

    function date_parse_from_format($format, $date) {
        // reverse engineer date formats
        $keys = array(
            'Y' => array('year', '\d{4}'),
            'y' => array('year', '\d{2}'),
            'm' => array('month', '\d{2}'),
            'n' => array('month', '\d{1,2}'),
            'M' => array('month', '[A-Z][a-z]{3}'),
            'F' => array('month', '[A-Z][a-z]{2,8}'),
            'd' => array('day', '\d{2}'),
            'j' => array('day', '\d{1,2}'),
            'D' => array('day', '[A-Z][a-z]{2}'),
            'l' => array('day', '[A-Z][a-z]{6,9}'),
            'u' => array('hour', '\d{1,6}'),
            'h' => array('hour', '\d{2}'),
            'H' => array('hour', '\d{2}'),
            'g' => array('hour', '\d{1,2}'),
            'G' => array('hour', '\d{1,2}'),
            'i' => array('minute', '\d{2}'),
            's' => array('second', '\d{2}')
        );

        // convert format string to regex
        $regex = '';
        $chars = str_split($format);
        foreach ($chars AS $n => $char) {
            $lastChar = isset($chars[$n - 1]) ? $chars[$n - 1] : '';
            $skipCurrent = '\\' == $lastChar;
            if (!$skipCurrent && isset($keys[$char])) {
                $regex .= '(?P<' . $keys[$char][0] . '>' . $keys[$char][1] . ')';
            } else if ('\\' == $char) {
                $regex .= $char;
            } else {
                $regex .= preg_quote($char);
            }
        }

        $dt = array();
        $dt['error_count'] = 0;
        // now try to match it
        if (preg_match('#^' . $regex . '$#', $date, $dt)) {
            foreach ($dt AS $k => $v) {
                if (is_int($k)) {
                    unset($dt[$k]);
                }
            }
            if (!checkdate($dt['month'], $dt['day'], $dt['year'])) {
                $dt['error_count'] = 1;
            }
        } else {
            $dt['error_count'] = 1;
        }
        $dt['errors'] = array();
        $dt['fraction'] = '';
        $dt['warning_count'] = 0;
        $dt['warnings'] = array();
        $dt['is_localtime'] = 0;
        $dt['zone_type'] = 0;
        $dt['zone'] = 0;
        $dt['is_dst'] = '';
        return $dt;
    }

}
?>

Not my invention though. I found it here: http://stackoverflow.com/questions/6668223/php-date-parse-from-format-alternative-in-php-5-2

Thought this might be a good place to keep a copy in case someone stumbles upon the same problem facing outdated PHP versions on customer servers ....

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