103 lines
3.0 KiB
PHP
103 lines
3.0 KiB
PHP
<?php
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namespace App\Core;
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/**
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* Core Validation Engine
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* Handles data validation before processing.
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*/
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class Validator
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{
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private array $errors = [];
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/**
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* Validate an array of data against rules.
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* Example rules: ['email' => 'required|email', 'password' => 'required|min:8']
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*/
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public function validate(array $data, array $rules): bool
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{
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$this->errors = [];
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foreach ($rules as $field => $ruleString) {
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$rulesArray = explode('|', $ruleString);
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$value = $data[$field] ?? null;
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foreach ($rulesArray as $rule) {
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$this->applyRule($field, $value, $rule);
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}
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}
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return empty($this->errors);
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}
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/**
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* Get validation errors.
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*/
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public function getErrors(): array
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{
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return $this->errors;
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}
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/**
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* Apply a specific rule to a field's value.
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*/
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private function applyRule(string $field, $value, string $rule): void
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{
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// Parse rule with parameters (e.g., min:8)
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$params = [];
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if (strpos($rule, ':') !== false) {
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list($rule, $paramStr) = explode(':', $rule, 2);
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$params = explode(',', $paramStr);
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}
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switch ($rule) {
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case 'required':
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if ($value === null || trim((string)$value) === '') {
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$this->addError($field, "The {$field} field is required.");
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}
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break;
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case 'email':
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if ($value && !filter_var($value, FILTER_VALIDATE_EMAIL)) {
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$this->addError($field, "The {$field} must be a valid email address.");
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}
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break;
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case 'min':
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$min = (int)($params[0] ?? 0);
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if ($value && strlen((string)$value) < $min) {
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$this->addError($field, "The {$field} must be at least {$min} characters.");
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}
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break;
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case 'max':
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$max = (int)($params[0] ?? 0);
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if ($value && strlen((string)$value) > $max) {
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$this->addError($field, "The {$field} must not exceed {$max} characters.");
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}
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break;
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case 'numeric':
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if ($value && !is_numeric($value)) {
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$this->addError($field, "The {$field} must be a number.");
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}
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break;
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case 'strong_password':
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// At least 8 chars, 1 uppercase, 1 lowercase, 1 number
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if ($value && !preg_match('/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d).{8,}$/', $value)) {
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$this->addError($field, "The {$field} must be at least 8 characters long and contain uppercase, lowercase, and a number.");
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}
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break;
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}
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}
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private function addError(string $field, string $message): void
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{
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if (!isset($this->errors[$field])) {
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$this->errors[$field] = [];
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}
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$this->errors[$field][] = $message;
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}
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}
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