laminas/laminas-validator
Validation component for PHP and Laminas applications. Provides a wide range of ready-to-use validators (strings, numbers, dates, files, and more), consistent error messages, and an extensible API to create custom validators and input filtering rules.
Laminas\Validator\Timezone allows validating if an input string represents a
timezone.
The Laminas\Validator\Timezone validator is capable of validating the
abbreviation (e.g. ewt) as well as the location string (e.g.
America/Los_Angeles). These options are stored in the validator as
LOCATION, ABBREVIATION, and ALL class constants.
The default validation type will check against abbreviations as well as the location string.
$validator = new Laminas\Validator\Timezone();
$validator->isValid('America/Los_Angeles'); // returns true
$validator->isValid('ewt'); // returns true
$validator->isValid('Foobar'); // returns false
To validate against only the location string you can set the type:
use Laminas\Validator\Timezone;
$validator = new Timezone([
'type' => Timezone::LOCATION,
]);
$validator->isValid('America/Los_Angeles'); // returns true
$validator->isValid('ewt'); // returns false
$validator->isValid('Foobar'); // returns false
Similarly, to validate only abbreviations:
use Laminas\Validator\Timezone;
$validator = new Timezone([
'type' => Timezone::ABBREVIATION,
]);
$validator->isValid('America/Los_Angeles'); // returns false
$validator->isValid('ewt'); // returns true
$validator->isValid('Foobar'); // returns false
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