PHP code example of aegisora / date-format-rule

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

aegisora / date-format-rule example snippets

$date = DateTimeImmutable::createFromFormat('!' . $format, $value);
$errors = DateTimeImmutable::getLastErrors();
// $date !== false, no warnings/errors, and $date->format($format) === $value

use Aegisora\RuleContract\Models\Context;
use Aegisora\Rules\DateFormatRule;

$result = (new DateFormatRule('Y-m-d'))->validate(Context::create('2026-08-31'));

if ($result->isValid()) {
    // value is a valid date in the given format
} else {
    // value does not match the format
}

(new DateFormatRule('Y-m-d'))->validate(Context::create('2026-08-31')); // valid   — a real calendar date
(new DateFormatRule('Y-m-d'))->validate(Context::create('2024-02-29')); // valid   — 2024 is a leap year

(new DateFormatRule('Y-m-d'))->validate(Context::create('2026-02-31')); // invalid — February has no 31st
(new DateFormatRule('Y-m-d'))->validate(Context::create('2026-02-29')); // invalid — 2026 is not a leap year
(new DateFormatRule('Y-m-d'))->validate(Context::create('2026-13-01')); // invalid — month out of range

(new DateFormatRule('Y-m-d'))->validate(Context::create('2026-8-3'));         // invalid — missing leading zeros
(new DateFormatRule('Y-m-d'))->validate(Context::create('2026/08/31'));       // invalid — wrong separator
(new DateFormatRule('Y-m-d'))->validate(Context::create('2026-08-31 extra')); // invalid — trailing garbage

(new DateFormatRule('Y-n-j'))->validate(Context::create('2026-8-3'));         // valid   — the format allows no leading zeros

(new DateFormatRule('H:i'))->validate(Context::create('14:30'));      // valid
(new DateFormatRule('H:i:s'))->validate(Context::create('24:00:00')); // invalid — hour out of range

(new DateFormatRule('d F Y'))->validate(Context::create('31 August 2026'));             // valid — textual month
(new DateFormatRule('Y-m-d\TH:i:s'))->validate(Context::create('2026-08-31T10:20:30')); // valid — escaped literal T

$result->isValid(); // false
$result->getFailedRuleCode(); // date_format_rule

use Aegisora\RuleContract\Models\Context;
use Aegisora\Rules\DateFormatRule;
use DateTimeZone;

$rule = new DateFormatRule('Y-m-d H:i:s', new DateTimeZone('Europe/Moscow'));

$rule->validate(Context::create('2026-08-31 12:00:00')); // valid

use Aegisora\Guardian\Guardian;
use Aegisora\Rules\DateFormatRule;
use App\Exceptions\InvalidBirthDateException;

$guardian = new Guardian();

$guardian
    ->that($birthDate)
    ->must(new DateFormatRule('Y-m-d'), new InvalidBirthDateException())
    ->validate();