Form object for validation

Form.php

<?php
 Form {

    private $vars = [];
    private $validators = [];

    private $errors = [];
    private $validatedVars = [];

    /**
     * @param array $varArray Could be either the POST or the GET array
     */
    public function __construct(array $varArray) {
        $this->vars = $varArray;
    }

    /**
     * @param string   $name      The name of GET/POST parameter under test
     * @param callable $validator The function that tests whether or not that field is valid or not
     *                            Should take one parameter (the value of the field) and return TRUE/FALSE
     *                            based on whether the input was valid or not.
     * @param string   $error     Error string that would be displayed to the user in the case of a test failure.
     */
    public function bindValidator($name, callable $validator, $error) {
        $this->validators[$name][] = ["validator" => $validator, "error" => $error];
    }

    /**
     * @return array Array of valid form elements.
     */
    public function validateForm() {
        foreach ($this->validators as $name => $validators) {
            $fieldValid = true;
            foreach ($validators as $validator) {
                $validatorPassed = $validator["validator"]($this->vars[$name]);
                if (!$validatorPassed) {
                    $this->errors[] = $validator["error"];
                }
                $fieldValid = $fieldValid && $validatorPassed;
            }
            if ($fieldValid) {
                $this->validatedVars[$name] = $this->vars[$name];
            }
        }

        return $this->validatedVars;
    }

    public function getErrors() {
        return $this->errors;
    }

}