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PHP Renderer

This is a renderer for rendering PHP view scripts into a PSR-7 Response object. It works well with Slim Framework 4.

Cross-site scripting (XSS) risks

Note that PHP-View has no built-in mitigation from XSS attacks. It is the developer's responsibility to use htmlspecialchars() or a component like laminas-escaper. Alternatively, consider Twig-View.

Installation

Install with Composer:

composer require slim/php-view

Usage with Slim 4

use Slim\Views\PhpRenderer;

include "vendor/autoload.php";

$app = Slim\AppFactor::creates();

$app->get('/hello/{name}', function ($request, $response, $args) {
    $renderer = new PhpRenderer('path/to/templates');
    return $renderer->render($response, "hello.php", $args);
});

$app->run();

Note that you could place the PhpRenderer instantiation within your DI Container.

Usage with any PSR-7 Project

//Construct the View
$phpView = new PhpRenderer("path/to/templates");

//Render a Template
$response = $phpView->render(new Response(), "hello.php", $yourData);

Template Variables

You can now add variables to your renderer that will be available to all templates you render.

// via the constructor
$templateVariables = [
    "title" => "Title"
];
$phpView = new PhpRenderer("path/to/templates", $templateVariables);

// or setter
$phpView->setAttributes($templateVariables);

// or individually
$phpView->addAttribute($key, $value);

Data passed in via ->render() takes precedence over attributes.

$templateVariables = [
    "title" => "Title"
];
$phpView = new PhpRenderer("path/to/templates", $templateVariables);

//...

$phpView->render($response, $template, [
    "title" => "My Title"
]);
// In the view above, the $title will be "My Title" and not "Title"

Sub-templates

Inside your templates you may use $this to refer to the PhpRenderer object to render sub-templates.

Rendering in Layouts

You can now render view in another views called layouts, this allows you to compose modular view templates and help keep your views DRY.

Create your layout path/to/templates/layout.php.

<html><head><title><?=$title?></title></head><body><?=$content?></body></html>

Create your view template path/to/templates/hello.php.

Hello <?=$name?>!

Rendering in your code.

$phpView = new PhpRenderer("path/to/templates", ["title" => "My App"]);
$phpView->setLayout("layout.php");

//...

$phpview->render($response, "hello.php", ["title" => "Hello - My App", "name" => "John"]);

Response will be

<html><head><title>Hello - My App</title></head><body>Hello John!</body></html>

Please note, the $content is special variable used inside layouts to render the wrapped view and should not be set in your view paramaters.

Exceptions

\RuntimeException - if template does not exist

\InvalidArgumentException - if $data contains 'template'

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