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<?php
namespace Mbright\Validation\Rule\Validate;
class InKeys implements ValidateRuleInterface
{
/** @var array */
protected $array;
/**
* @param array $array An array of key-value pairs; the value must match one of the keys in this array.
*/
public function __construct(array $array)
$this->array = $array;
}
* Validates that the value is a key in a given array.
*
* @param object $subject The subject to be filtered.
* @param string $field The subject field name.
* @return bool True if valid, false if not.
public function __invoke($subject, string $field): bool
$value = $subject->$field;
if (!is_string($value) && !is_int($value)) {
// array_key_exists errors on non-string non-int keys.
return false;
// using array_keys() converts string numeric keys to integers, which is *not* the behavior we want.
return array_key_exists($subject->$field, $this->array);
MarcusFulbright /
Validate
