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vendor/symfony/error-handler/README.md

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+ErrorHandler Component
+======================
+
+The ErrorHandler component provides tools to manage errors and ease debugging PHP code.
+
+Getting Started
+---------------
+
+```
+$ composer require symfony/error-handler
+```
+
+```php
+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();
+
+// If you want a custom generic template when debug is not enabled
+// HtmlErrorRenderer::setTemplate('/path/to/custom/error.html.php');
+
+$data = ErrorHandler::call(static function () use ($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;
+});
+```
+
+Resources
+---------
+
+ * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+ * [Report issues](https://github.com/symfony/symfony/issues) and
+   [send Pull Requests](https://github.com/symfony/symfony/pulls)
+   in the [main Symfony repository](https://github.com/symfony/symfony)