19 lines
585 B
PHP
19 lines
585 B
PHP
<?php
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function csrfToken(): string {
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if (session_status() === PHP_SESSION_NONE) session_start();
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if (empty($_SESSION['csrf_token'])) {
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$_SESSION['csrf_token'] = bin2hex(random_bytes(32));
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}
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return $_SESSION['csrf_token'];
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}
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function csrfField(): string {
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return '<input type="hidden" name="csrf_token" value="' . htmlspecialchars(csrfToken()) . '">';
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}
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function csrfValidate(): bool {
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if (session_status() === PHP_SESSION_NONE) session_start();
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$token = $_POST['csrf_token'] ?? '';
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return hash_equals($_SESSION['csrf_token'] ?? '', $token);
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}
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