phalcon validation cirillic utf8 - validation

Question

I try validation Alnum in my Phalcon model. But I get not the correct validation when I enter symbols in Cyrillic (utf8)
$validation->add(
'title',
new \Phalcon\Validation\Validator\Alnum([
"message" => 'Поле Город содержит недопустимые символы',
])
);

Answer 1

Phalcon's validation service is using the PHP built in ctype_alnum function (as seen here), which does not support multibyte strings.
Quick snippets for testing:
$validation = new \Phalcon\Validation();
$validation->add(
'name',
new \Phalcon\Validation\Validator\Alnum(
[
'message' => 'Validation failed',
]
)
);
$words = [
'test1234',
't__est1234',
'тест123',
];
echo '<h2>Phalcon Validation</h2>';
foreach ($words as $word) {
$messages = $validation->validate(['name' => $word]);
if (count($messages)) {
echo '[N] '. $word, '<br>';
} else {
echo '[Y] '. $word, '<br>';
}
}
echo '<h2>PHP `ctype_alnum`</h2>';
foreach ($words as $word) {
if (ctype_alnum($word)) {
echo '[Y] '. $word, '<br>';
} else {
echo '[N] '. $word, '<br>';
}
}
Results:
Phalcon Validation
[Y] test1234
[N] t__est1234
[N] тест123
PHP `ctype_alnum`
[Y] test1234
[N] t__est1234
[N] тест123
I'm afraid you have to use preg_match to solve your problem. Quick sample:
preg_match("/^[a-zA-Z\p{Cyrillic}0-9\s\-]+$/u", $string);
Source: Using Arabic characters with ctype_alnum or How to use ctype_alpha with UTF-8
And finally, here is info on how to create your own validator: https://docs.phalconphp.com/en/latest/validation#validators
Update: #Vladimir Kompaniec solution from comments!
$validator->add('city', new Callback([
'callback' => function () {
if (empty($this->subway)) {
return true;
}
return (0 != preg_match("/[\w\d\s\-А-Яа-я]+/u", $this->subway));
},
'message' => 'Поле метро содержит недопустимые символы',
'cancelOnFail' => true,
]));