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@ 2012-09-06T18:12:15Z

<?php
function scholar_parse_time($time) // {{{
{
    '/^\s*(?P<hour>\d+)(?>:(?P<minute>\d+))?(?>:(?P<second>\d+(\.\d*)?))?\s*$/';

    if (preg_match('/^\s*(?>(?P<hour>\d+)(?>:(?P<minute>\d+)(?>:(?P<second>\d+)(?P<millis>\.\d*)?)?)?)\s*$/', $time, $match)) {
        $h = intval($match['hour']);
        $m = isset($match['minute']) ? intval($match['minute']) : null;
        $s = isset($match['second']) ? intval($match['second']) : null;
        $ms = isset($match['millis']) ? round(floatval($match['millis']) * 1000) : null;

        if ($h < 24 && (null === $m || $m < 60) && (null === $s || $s < 60)) {
            return array(
                'hour'   => $h,
                'minute' => $m,
                'second' => $s,
                'millis' => $ms,
                'iso'    => null === $m
                    ? sprintf('%02d', $h)
                    : (null === $s
                        ? sprintf('%02d:%02d', $h, $m)
                        : sprintf('%02d:%02d:%02d', $h, $m, $s)
                    ),
            );
        }
    }

    return false;
} // }}}

var_dump(scholar_parse_time('19'));
var_dump(scholar_parse_time('19:01'));
var_dump(scholar_parse_time('19:01:04'));
var_dump(scholar_parse_time('19:01:32.'));
var_dump(scholar_parse_time('19:01:32.3'));
var_dump(scholar_parse_time('19:01.1'));

Output for git.master, git.master_jit, rfc.property-hooks: array(5) { ["hour"]=> int(19) ["minute"]=> NULL ["second"]=> NULL ["millis"]=> NULL ["iso"]=> string(2) "19" } array(5) { ["hour"]=> int(19) ["minute"]=> int(1) ["second"]=> NULL ["millis"]=> NULL ["iso"]=> string(5) "19:01" } array(5) { ["hour"]=> int(19) ["minute"]=> int(1) ["second"]=> int(4) ["millis"]=> NULL ["iso"]=> string(8) "19:01:04" } array(5) { ["hour"]=> int(19) ["minute"]=> int(1) ["second"]=> int(32) ["millis"]=> float(0) ["iso"]=> string(8) "19:01:32" } array(5) { ["hour"]=> int(19) ["minute"]=> int(1) ["second"]=> int(32) ["millis"]=> float(300) ["iso"]=> string(8) "19:01:32" } bool(false)

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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