validation › Validator.php

<?php
require_once dirname(__FILE__) . '/../i18n/I18n.php';

class Validator
{
    // ...

    public function isAllValid()
    {
        $this->errors = [];

        // We spin on each field's defined rules, calling each one reflectively.
        // We stop at the first rule for a field that _doesn't_ pass, if one
        // exists. And, if we have a failing rule for a field, we add it to our
        // errors array.
        foreach ($this->rules as $field => $fieldRules) {
            $value = $this->fields[$field] ?? null;

            foreach ($fieldRules as $rule) {
                // Some rules, like min(imum) length, have arguments. So
                // we parse each rule (min|6) to separate the name (min)
                // from the argument (6).
                [$ruleName, $ruleArg] = $this->parseRule($rule);

                $validateMethod = "validate_{$ruleName}";

                if (!$this->$validateMethod($value, $ruleArg)) {
                    $this->errors[$field] =
                        $this->getErrorText($field, $ruleName, $ruleArg);
                    break;
                }
            }
        }

        return count($this->errors) == 0;
    }

    // ...
}