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<?php
namespace Logikos\Util\Validation\Validator;
use Logikos\Util\Validation\Validator;
class IsInstanceOf implements Validator {
private $fqcn;
private $description;
/**
* @param string $fqcn
* @param string $description
* @throws Exception
*/
public function __construct($fqcn, $description = null) {
if (!$this->isValidClassName($fqcn))
throw new Exception("No such class: {$fqcn}");
$this->fqcn = $fqcn;
$this->description = $description ?? "Must be an instance of {$fqcn}";
}
public function getFqcn() {
return $this->fqcn;
public function validate($value) : bool {
return is_a($value, $this->fqcn);
protected function isValidClassName($fqcn) {
return class_exists($fqcn) || interface_exists($fqcn);
public function getDescription() {
return $this->description;
logikostech /
util
