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Benchmark v0.9.9 compilation and rendering speed
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‎tests/benchmark.php‎

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<?php
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/**
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* Compiler and runtime benchmark script. Default iterations: 1000.
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*
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* Usage: php -d opcache.enable_cli=1 -d opcache.jit=tracing tests/benchmark.php
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*/
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use DevTheorem\Handlebars\Handlebars;
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use DevTheorem\Handlebars\HelperOptions;
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use DevTheorem\Handlebars\Options;
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require __DIR__ . '/../vendor/autoload.php';
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$iterations = (int) ($argv[1] ?? 1000);
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// A large, complex template exercising as many syntax features as possible.
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$template = loadTemplate('large-page');
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$partialNames = ['alert', 'breadcrumbs', 'footer-col', 'nav-item', 'page-header', 'pagination', 'side-panel'];
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$partialTemplates = [];
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foreach ($partialNames as $name) {
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$partialTemplates[$name] = loadTemplate($name);
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}
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$helpers = [
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't' => function (string $key, HelperOptions $options) {
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$translations = [
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'nav.profile' => 'Profile',
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'nav.settings' => 'Settings',
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'nav.admin' => 'Admin',
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'nav.logout' => 'Log Out',
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'nav.login' => 'Log In',
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'table.actions' => 'Actions',
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'table.empty' => 'No records found.',
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'pagination.label' => 'Page navigation',
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'pagination.prev' => 'Previous',
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'pagination.next' => 'Next',
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'pagination.showing' => 'Showing {start}–{end} of {total}',
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'edit' => 'Edit',
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'delete' => 'Delete',
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'confirm_delete' => 'Are you sure you want to delete this?',
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];
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$str = $translations[$key] ?? $key;
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foreach ($options->hash as $k => $v) {
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// for pagination.showing
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$str = str_replace('{' . $k . '}', (string) $v, $str);
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}
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return $str;
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},
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'formatDate' => function (mixed $value, string $format) {
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return date($format, strtotime($value));
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},
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'formatCurrency' => function (mixed $value, ?string $format) {
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return ($format ? "$format " : '') . number_format($value, 2);
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},
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'replace' => function (string $subject, string $search, ?string $replace) {
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return str_replace($search, $replace ?? '', $subject);
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},
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'eq' => function (mixed $a, mixed $b) {
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if ($a === null || $b === null) {
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// in JS, null is not equal to blank string or false or zero
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return $a === $b;
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}
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return $a == $b;
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},
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'and' => fn(mixed $a, mixed $b) => $a && $b,
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'not' => fn(mixed $a) => !$a,
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'gt' => fn(mixed $a, mixed $b) => $a > $b,
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];
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$options = new Options(
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helpers: $helpers,
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partials: $partialTemplates,
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);
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// Warm up: give the JIT a chance to compile hot paths before we measure.
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for ($i = 0; $i < 50; $i++) {
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Handlebars::precompile($template, $options);
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}
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memory_reset_peak_usage();
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$start = hrtime(true);
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for ($i = 0; $i < $iterations; $i++) {
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Handlebars::precompile($template, $options);
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}
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$elapsed = (hrtime(true) - $start) / 1e9;
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$compilePeakMB = memory_get_peak_usage() / 1024 / 1024;
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$perParse = $elapsed / $iterations * 1000;
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$php = Handlebars::precompile($template, $options);
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$codeBytes = strlen($php);
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printf(
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"Compiled %d times | %.2f ms/compile | %6.1f KB code | %.1f MB peak\n",
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$iterations,
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$perParse,
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$codeBytes / 1024,
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$compilePeakMB,
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);
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$data = [
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'lang' => 'en',
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'pageTitle' => 'Dashboard',
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'siteName' => 'MyApp',
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'stylesheets' => [
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['url' => '/css/app.css'],
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['url' => '/css/print.css', 'media' => 'print'],
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],
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'bodyClass' => 'page-dashboard',
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'sticky' => true,
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'rootUrl' => '/',
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'logoHtml' => '<img src="/logo.svg" alt="">',
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'user' => [
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'id' => 1,
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'name' => 'Alice',
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'avatar' => '/avatars/alice.jpg',
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'isAdmin' => true,
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'verified' => true,
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],
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'navItems' => [
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['label' => 'Home', 'url' => '/', 'active' => true],
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['label' => 'Reports', 'url' => '/reports', 'badge' => '3'],
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['label' => 'More', 'url' => '#', 'icon' => 'chevron', 'children' => [
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['label' => 'Sub A', 'url' => '/a'],
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['label' => 'Sub B', 'url' => '/b'],
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]],
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],
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'alerts' => [
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['type' => 'success', 'message' => 'Saved!', 'dismissible' => true, 'icon' => 'check'],
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],
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'breadcrumbs' => [
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['label' => 'Home', 'url' => '/'],
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['label' => 'Orders', 'url' => '/orders'],
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['label' => 'List', 'url' => '/orders/list'],
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],
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'heading' => 'Orders',
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'headingBadge' => ['type' => 'primary', 'text' => 'Live'],
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'subheading' => 'All orders',
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'actions' => [
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['label' => 'New', 'url' => '/orders/new', 'primary' => true, 'icon' => 'plus'],
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],
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'hoverable' => true,
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'bordered' => false,
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'sortBaseUrl' => '/orders',
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'currentSort' => ['key' => 'date', 'dir' => 'asc'],
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'showActions' => true,
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'selectedIndex' => 2,
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'columnCount' => 5,
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'currency' => 'USD',
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'columns' => [
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['key' => 'id', 'label' => '#', 'sortable' => true, 'type' => 'text'],
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['key' => 'name', 'label' => 'Customer', 'type' => 'link', 'linkTemplate' => '/c/{id}'],
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['key' => 'created', 'label' => 'Date', 'sortable' => true, 'type' => 'date', 'format' => 'M j, Y'],
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['key' => 'total', 'label' => 'Total', 'type' => 'currency', 'showTotal' => true],
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['key' => 'active', 'label' => 'Active', 'type' => 'boolean'],
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],
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'items' => array_map(fn($i) => [
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'id' => (string) $i,
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'name' => "Customer $i",
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'created' => date('Y-m-d', mktime(0, 0, 0, (int) ceil($i / 28), (($i - 1) % 28) + 1, 2024) ?: null),
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'total' => 100.0 * $i,
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'active' => (bool) ($i % 2),
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'deleted' => false,
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'currency' => 'USD',
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], range(1, 100)),
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'rowActions' => [
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['icon' => 'edit', 'style' => 'secondary', 'labelKey' => 'edit', 'urlTemplate' => '/orders/{id}/edit', 'requiresAdmin' => false],
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['icon' => 'trash', 'style' => 'danger', 'labelKey' => 'delete', 'urlTemplate' => '/orders/{id}', 'confirm' => true, 'confirmKey' => 'confirm_delete', 'requiresAdmin' => true],
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],
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'showTotals' => true,
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'totals' => ['total' => 5500.00],
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'pagination' => [
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'hasPrev' => false,
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'hasNext' => true,
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'prevUrl' => '#',
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'nextUrl' => '/orders?page=2',
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'start' => 1,
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'end' => 10,
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'total' => 42,
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'pages' => [
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['active' => true, 'number' => 1, 'url' => '/orders'],
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['active' => false, 'number' => 2, 'url' => '/orders?page=2'],
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['ellipsis' => true, 'number' => null, 'url' => ''],
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['active' => false, 'number' => 5, 'url' => '/orders?page=5'],
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],
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],
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'sidePanels' => [
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[
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'id' => 'summary',
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'title' => 'Summary',
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'type' => 'stats',
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'collapsible' => true,
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'collapsed' => false,
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'stats' => [
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['label' => 'Total Orders', 'value' => 42, 'trend' => 'up', 'delta' => 5],
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['label' => 'Revenue', 'value' => '$5,500', 'unit' => 'USD', 'delta' => 0],
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],
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],
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],
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'footerColumns' => [
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['heading' => 'Product', 'links' => [
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['label' => 'Features', 'url' => '/features'],
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['label' => 'Pricing', 'url' => '/pricing'],
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]],
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['heading' => 'Legal', 'links' => [
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['label' => 'Privacy', 'url' => '/privacy'],
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['label' => 'Terms', 'url' => '/terms'],
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]],
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],
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'copyright' => '©',
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'showYear' => true,
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'currentYear' => 2024,
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'social' => [
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['name' => 'GitHub', 'url' => 'https://github.com/myapp', 'icon' => 'github'],
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],
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'scripts' => [
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['url' => '/js/vendor.js'],
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['url' => '/js/app.js', 'defer' => true],
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],
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];
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$renderer = Handlebars::template($php);
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// Warm up
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for ($i = 0; $i < 50; $i++) {
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$renderer($data);
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}
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memory_reset_peak_usage();
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$start = hrtime(true);
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for ($i = 0; $i < $iterations; $i++) {
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$renderer($data);
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}
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$elapsed = (hrtime(true) - $start) / 1e9;
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$renderPeakMB = memory_get_peak_usage() / 1024 / 1024;
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$perRun = $elapsed / $iterations * 1000;
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$outputBytes = strlen($renderer($data));
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printf(
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"Executed %d times | %.2f ms/render | %6.1f KB output | %.1f MB peak\n",
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$iterations,
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$perRun,
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$outputBytes / 1024,
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$renderPeakMB,
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);
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if (isset($argv[1])) {
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echo "<?php\n", $php, "\n";
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}
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function loadTemplate(string $name): string
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{
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$filename = __DIR__ . "/templates/$name.hbs";
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$template = file_get_contents($filename);
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if ($template === false) {
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exit("Failed to open $filename");
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}
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return $template;
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}

‎tests/templates/alert.hbs‎

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<div class="alert alert-{{type}} {{#if dismissible}}alert-dismissible{{/if}}" role="alert">
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{{#if icon}}<i class="icon-{{icon}}"></i>{{/if}}
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{{{message}}}
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{{#if dismissible}}<button type="button" class="close" data-dismiss="alert">&times;</button>{{/if}}
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</div>

‎tests/templates/breadcrumbs.hbs‎

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{{#if breadcrumbs}}
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<nav aria-label="breadcrumb">
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<ol class="breadcrumb">
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{{#each breadcrumbs as |crumb idx|}}
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<li class="breadcrumb-item{{#if @last}} active{{/if}}">
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{{#if @last}}
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{{crumb.label}}
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{{else}}
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<a href="{{crumb.url}}">{{crumb.label}}</a>
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{{/if}}
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</li>
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{{/each}}
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</ol>
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</nav>
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{{/if}}

‎tests/templates/footer-col.hbs‎

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<div class="footer-col">
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{{#if heading}}<h5>{{heading}}</h5>{{/if}}
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<ul>
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{{#each links}}
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<li><a href="{{url}}"{{#if external}} target="_blank" rel="noopener noreferrer"{{/if}}>{{label}}</a></li>
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{{/each}}
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</ul>
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</div>

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