Certification Symfony 1

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Questions and Answers

How can you simulate a POST request to /login with a login parameter set to admin?

$request = Request::create( null, '/login', ['login' => 'admin'] );

$request = Request::create( 'POST', '/login', ['login' => 'admin'] ); (correct)

$request = Request::create( '/login', null, ['login' => 'admin'] );

$request = Request::create( '/login', 'POST', ['login' => 'admin'] );

What exception is thrown in a DataTransformer in Symfony?

RuntimeException

ValidatorException

DataTransformerException

TransformationFailedException (correct)

What is the Compiler used for in Twig?

To compile a PHP class into a Node

To transform a Node into a valid PHP class (correct)

To execute a PHP class

To parse a Twig template

What is the purpose of the mirror(...) function in Symfony's Filesystem component?

To mirror the source directory to the target directory Signup and view all the answers

What is the class that actually calls the Compiler in Twig?

The Compiler Signup and view all the answers

Can files that are not present in the source directory be deleted when using mirror(...) in Symfony's Filesystem component?

Yes Signup and view all the answers

What is the purpose of a DataTransformer in Symfony?

To transform data from one format to another Signup and view all the answers

What is the class that is used to create a request in Symfony?

Request Signup and view all the answers

What is the purpose of the RouteCompiler in Symfony?

To compile a route into a valid PHP class Signup and view all the answers

Is the following code valid in Twig? {% include foo|default('bar') ~ '_template.html.twig' %}

Yes Signup and view all the answers

What is the class used in Symfony to dump contents to a file?

Symfony\Component\Filesystem\Filesystem Signup and view all the answers

What is the purpose of the RouteCollection in Symfony?

To manage routing in Symfony Signup and view all the answers

What is the name of the method used to add an extra RouteCollection into an existing one?

addRouteCollection Signup and view all the answers

What is the current version of the Symfony certification being used?

Symfony 6 Signup and view all the answers

What is the correct method to dump contents to a file?

dumpFile('file.txt', 'Hello World') Signup and view all the answers

Which HTTP verbs are idempotent?

HEAD, GET, OPTIONS Signup and view all the answers

Can the cursor position be changed in a command?

Yes Signup and view all the answers

What is the difference between findDefinition and getDefinition?

findDefinition resolves aliases, getDefinition does not Signup and view all the answers

How do you access $_SERVER data when using a Symfony\Component\HttpFoundation\Request object?

$request->server Signup and view all the answers

Can the constraints of a class be listed?

Yes Signup and view all the answers

What is the default status code of a Symfony\Component\HttpFoundation\RedirectResponse object?

302 Signup and view all the answers

How do you import the hello namespace to use the world() function?

use myapp\utils\hello; Signup and view all the answers

What is the purpose of the dumpFile method?

Dumps the contents to a file Signup and view all the answers

What is the purpose of the Cursor class in Symfony's Console component?

To change the cursor position Signup and view all the answers

What is the correct namespace declaration for a PHP function?

use function myapp\utils\hello\world; Signup and view all the answers

As of PHP 5.6, which data types are allowed in a user-defined PHP constant?

array, float, string, boolean Signup and view all the answers

What are the built-in arguments variants in Symfony Console?

InputArgument::OPTIONAL, InputArgument::REQUIRED, InputArgument::IS_ARRAY Signup and view all the answers

How can you register the AcmeListener to the EventDispatcher in order to call the onFooAction method when the acme.action event is dispatched?

$dispatcher->addListener('acme.action', array($listener, 'onFooAction')); Signup and view all the answers

What is the structure of the Response's first line in HTTP?

HTTP-Version Status-Code Reason-Phrase Signup and view all the answers

Can a Route defined with /page/{foo}/{foo} path be compiled in Symfony Routing?

No, it cannot be compiled. Signup and view all the answers

What is the correct way to use a namespace in PHP?

use function myapp\utils\hello\world; Signup and view all the answers

What is the purpose of the EventDispatcher in Symfony?

To dispatch events between different components. Signup and view all the answers

What is the purpose of the Console component in Symfony?

To create command-line tools. Signup and view all the answers

Study Notes

Symfony Certification

The test consists of 20 questions, and the user finished it in 23 minutes and 59 seconds.
The test questions cover various topics, including Symfony components, PHP basics, and HTTP.

Routing

RouteCollection usage: Since 2.2, the $prefix argument is not available.
You can add an extra RouteCollection into an existing one.

Filesystem

Dump contents to a file: The correct method to dump contents to a file is $fs->dumpFile('file.txt', 'Hello World');.

HTTP

Idempotent HTTP verbs: The idempotent HTTP verbs are HEAD, CONNECT, GET, OPTIONS.
Status code: The default status code of a Symfony\Component\HttpFoundation\RedirectResponse object is not 301.

Console

Cursor usage: The cursor position can be changed in a command.
Arguments variants: The built-in arguments variants are InputArgument::IS_ARRAY, InputArgument::OPTIONAL, InputArgument::REQUIRED.

Dependency Injection

FindDefinition: The difference between findDefinition and getDefinition is that getDefinition resolves aliases.

HttpFoundation

Accessing Request Data: To access $_SERVER data when using a Symfony\Component\HttpFoundation\Request object, use $request->server.
Status code: The default status code of a Symfony\Component\HttpFoundation\RedirectResponse object is not 301.

Validator

Constraints debug: The constraints of a class can be listed.

PHP Basics

Namespaces: The correct way to import the hello namespace so that you can use the world() function is use function myapp\utils\hello\world;.
Constant: As of PHP 5.6, the allowed data structures in a user-defined PHP constant are array, float, string, and boolean.

Event Dispatcher

Connecting Listeners: To register the AcmeListener to the EventDispatcher, use $dispatcher->addListener('acme.action', array($listener, 'onFooAction'));.

Form

TextType children: The form types that do not inherit from the Symfony\Component\Form\Extension\Core\Type\TextType type are LocaleType, HiddenType, and RangeType.
DataTransformer: A Symfony\Component\Form\Exception\TransformationFailedException thrown in a DataTransformer causes a validation error.

Twig

Conditional include: The code {% include foo|default('bar') ~ '_template.html.twig' %} is valid.
Node compilation: The Environment class calls the compiler.

Filesystem

Mirror usage: When using mirror(...), files that are not present in the source directory can be deleted.

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Certification Symfony 1

Podcast Beta

Questions and Answers

How can you simulate a POST request to /login with a login parameter set to admin?

What exception is thrown in a DataTransformer in Symfony?

What is the Compiler used for in Twig?

What is the purpose of the mirror(...) function in Symfony's Filesystem component?

What is the class that actually calls the Compiler in Twig?

Can files that are not present in the source directory be deleted when using mirror(...) in Symfony's Filesystem component?

What is the purpose of a DataTransformer in Symfony?

What is the class that is used to create a request in Symfony?

What is the purpose of the RouteCompiler in Symfony?

Is the following code valid in Twig? {% include foo|default('bar') ~ '_template.html.twig' %}

What is the class used in Symfony to dump contents to a file?

What is the purpose of the RouteCollection in Symfony?

What is the name of the method used to add an extra RouteCollection into an existing one?

What is the current version of the Symfony certification being used?

What is the correct method to dump contents to a file?

Which HTTP verbs are idempotent?

Can the cursor position be changed in a command?

What is the difference between findDefinition and getDefinition?

How do you access $_SERVER data when using a Symfony\Component\HttpFoundation\Request object?

Can the constraints of a class be listed?

What is the default status code of a Symfony\Component\HttpFoundation\RedirectResponse object?

How do you import the hello namespace to use the world() function?

What is the purpose of the dumpFile method?

What is the purpose of the Cursor class in Symfony's Console component?

What is the correct namespace declaration for a PHP function?

As of PHP 5.6, which data types are allowed in a user-defined PHP constant?

What are the built-in arguments variants in Symfony Console?

How can you register the AcmeListener to the EventDispatcher in order to call the onFooAction method when the acme.action event is dispatched?

What is the structure of the Response's first line in HTTP?

Can a Route defined with /page/{foo}/{foo} path be compiled in Symfony Routing?

What is the correct way to use a namespace in PHP?

What is the purpose of the EventDispatcher in Symfony?

What is the purpose of the Console component in Symfony?

Study Notes

Symfony Certification

Routing

Filesystem

HTTP

Console

Dependency Injection

HttpFoundation

Validator

PHP Basics

Event Dispatcher

Form

Twig

Filesystem

Studying That Suits You

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