Symfony ErrorHandler Component

Install the component using Composer to add it to your PHP project.

composer require symfony/error-handler

You can enable full debugging features using Debug::enable(). Alternatively, you can enable specific features individually:

• ErrorHandler::register(): Registers the error handler.
• DebugClassLoader::enable(): Enables the debug class loader.

use Symfony\Component\ErrorHandler\Debug;
use Symfony\Component\ErrorHandler\ErrorHandler;
use Symfony\Component\ErrorHandler\DebugClassLoader;

Debug::enable();

// or enable only one feature
//ErrorHandler::register();
//DebugClassLoader::enable();

Use ErrorHandler::call() to wrap a block of code (passed as an anonymous function). If any code inside the function fails, a PHP exception will be thrown, even if the code uses the @ PHP silence operator.

use Symfony\Component\ErrorHandler\ErrorHandler;

$data = ErrorHandler::call(static function () use ($filename, $datetimeFormat) {
    // if any code executed inside this anonymous function fails, a PHP exception
    // will be thrown, even if the code uses the '@' PHP silence operator
    $data = json_decode(file_get_contents($filename), true);
    $data['read_at'] = date($datetimeFormat);
    file_put_contents($filename, json_encode($data));

    return $data;
});

If debug mode is not enabled, you can specify a custom generic HTML template for error rendering using HtmlErrorRenderer::setTemplate().

// If you want a custom generic template when debug is not enabled
// HtmlErrorRenderer::setTemplate('/path/to/custom/error.html.php');