phpapi_up_to_php81_version.yaml

questions:
  -
    uuid: 1eebf878-8b97-6494-ae5f-99d84c92580c
    question: 'Which configuration file format can be used to define PHP constants as parameters?'
    answers:
      - { value: php, correct: true }
      - { value: XML, correct: true }
      - { value: Annotation, correct: false }
      - { value: INI, correct: false }
      - { value: YAML, correct: true }
    help: 'https://symfony.com/doc/current/configuration.html#constants-as-parameters'
  -
    uuid: 1eebf878-8b98-6740-a71f-99d84c92580c
    question: 'Which of the following is not a predefined PHP variable?'
    answers:
      - { value: $http_response_header, correct: false }
      - { value: $php_errormsg, correct: false }
      - { value: $_POST, correct: false }
      - { value: $_GLOBALS, correct: true }
      - { value: $argc, correct: false }
    help: 'https://php.net/manual/en/reserved.variables.php'
  -
    uuid: 1eebf878-8b99-6316-bfed-99d84c92580c
    question: 'Which of the following are valid PHP class names ?'
    answers:
      - { value: '-MyClass', correct: false }
      - { value: 123MyClass, correct: false }
      - { value: myClass, correct: true }
      - { value: _MyClass, correct: true }
    help: 'https://www.php.net/manual/en/language.oop5.basic.php'
  -
    uuid: 1eebf878-8b99-655a-9f19-99d84c92580c
    question: "In the following code snippet, what condition should you use to ensure the Location header hasn't already been sent?\nfunction redirect($url) { $header = sprintf('Location: %s', $url); if ( ??? ) { header($header); exit; } }"
    answers:
      - { value: '!in_array($header, headers_list())', correct: true }
      - { value: "!header_exists('Location', $url)", correct: false }
      - { value: '!headers_sent()', correct: true }
      - { value: "$_SERVER['HTTP_LOCATION'] != $url", correct: false }
      - { value: '!http_redirect_to($url)', correct: false }
    help: 'https://php.net/manual/en/ref.network.php'
  -
    uuid: 1eebf878-8b9a-6054-a6cb-99d84c92580c
    question: '$a = (object) ["a" => "b"]; $b = (object) ["a" => "c"]; echo $a <=> $b;'
    answers:
      - { value: '0', correct: false }
      - { value: '1', correct: false }
      - { value: '-1', correct: true }
    help: 'https://php.net/manual/en/language.operators.comparison.php'
  -
    uuid: 1eebf878-8b9a-6428-aa7e-99d84c92580c
    question: 'Regarding this URI : /example?tags.id=2 What will be the content of $request->query->all() ?'
    answers:
      - { value: "[ 'tags.id' => 2 ]", correct: false }
      - { value: "[ 'tags_id' => 2 ]", correct: true }
      - { value: "[ 'tags' => ['id' => 2] ]", correct: false }
    help: 'https://github.com/symfony/symfony/issues/29664'
  -
    uuid: 1eebf878-8b9a-6d88-9a1d-99d84c92580c
    question: 'Which major PHP version introduced the « traits » feature?'
    answers:
      - { value: 'PHP 5.3', correct: false }
      - { value: 'PHP 6.0', correct: false }
      - { value: 'PHP 7.0', correct: false }
      - { value: 'PHP 5.4', correct: true }
      - { value: 'PHP 5.6', correct: false }
      - { value: 'PHP 5.5', correct: false }
    help: 'https://php.net/manual/en/language.oop5.traits.php'
  -
    uuid: 1eebf878-8b9b-6e90-875a-99d84c92580c
    question: 'Which of the following APIs are designed to be SAFE from SQL injections?'
    answers:
      - { value: 'Query methods on the Connection.', correct: false }
      - { value: 'Doctrine\DBAL\Connection#update($table, $values, $where, $types)', correct: true }
      - { value: 'Doctrine\DBAL\Connection#delete($table, $where, $types)', correct: true }
      - { value: 'Doctrine\DBAL\Query\QueryBuilder#setFirstResult($offset)', correct: true }
      - { value: 'The QueryBuilder API.', correct: false }
      - { value: 'Doctrine\DBAL\Platforms\AbstractPlatform#modifyLimitQuery($sql, $limit, $offset)', correct: true }
      - { value: 'Doctrine\DBAL\Connection#insert($table, $values, $types)', correct: true }
      - { value: 'Doctrine\DBAL\Query\QueryBuilder#setMaxResults($limit)', correct: true }
    help: 'https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/security.html#sql-injection-safe-and-unsafe-apis-for-user-input'
  -
    uuid: 1eebf878-8b9b-6f80-bc80-99d84c92580c
    question: "Which of the following statements best describes the purpose of PHP's extract() function? This function accepts an array as its first argument."
    answers:
      - { value: 'The passed array is populated by any variables in the current scope.', correct: false }
      - { value: 'A variable is created in the current scope for each element in the given associative array.', correct: true }
      - { value: "The second argument is used to specify a data type (such as 'string'). All values in the passed array of that type are returned in a new array.", correct: false }
      - { value: 'Any ZIP files referenced in the passed array are extracted to the current working directory.', correct: false }
    help: 'https://www.php.net/manual/en/function.extract.php'
  -
    uuid: 1eebf878-8b9c-6656-8085-99d84c92580c
    question: 'Which function would best parse the following string by the tab (\t) and newline (\n) characters ? $string = "John\tMark\nTed\tLarry";'
    answers:
      - { value: 'explode($string, "\t\n");', correct: false }
      - { value: strtok($string);, correct: true }
      - { value: str_split($string);, correct: false }
      - { value: strstr($string);, correct: false }
    help: 'https://www.php.net/manual/en/function.strtok.php'
  -
    uuid: 1eebf878-8b9c-6a02-9efa-99d84c92580c
    question: 'By default, which of the following request parameters can be used with built-in providers for a login form?'
    answers:
      - { value: _remember_me, correct: false }
      - { value: _token, correct: true }
      - { value: _user, correct: false }
      - { value: _password, correct: true }
      - { value: _passwd, correct: false }
      - { value: _username, correct: true }
    help: 'https://symfony.com/doc/current/reference/configuration/security.html#form-login-configuration'
  -
    uuid: 1eebf878-8b9d-606a-916d-99d84c92580c
    question: 'Could the current token be retrieved from Symfony\Component\Security\Core\Security ?'
    answers:
      - { value: 'Yes', correct: true }
      - { value: 'No', correct: false }
    help: 'https://symfony.com/doc/current/security.html#securing-other-services'
  -
    uuid: 1eebf878-8b9d-61f0-8520-99d84c92580c
    question: 'What is the signature of the vote() method from VoterInterface?'
    answers:
      - { value: 'public function vote(TokenInterface $token, $subject, array $attributes)', correct: true }
      - { value: 'public function vote(TokenInterface $token, array $attributes, $object)', correct: false }
      - { value: 'public function vote(TokenInterface $token, $object, array $attributes)', correct: false }
      - { value: 'public function vote(TokenInterface $token, array $attributes, $subject)', correct: false }
    help: 'https://github.com/symfony/symfony/blob/6.4/src/Symfony/Component/Security/Core/Authorization/Voter/VoterInterface.php'
  -
    uuid: 1eebf878-8b9d-6506-af8c-99d84c92580c
    question: 'Which class can be used to extracts security errors from a Request?'
    answers:
      - { value: AuthenticationUtils, correct: true }
      - { value: FrameworkUtils, correct: false }
      - { value: HttpUtils, correct: false }
      - { value: SecurityUtils, correct: false }
      - { value: RequestUtils, correct: false }
    help: 'https://github.com/symfony/symfony/blob/6.4/src/Symfony/Component/Security/Http/Authentication/AuthenticationUtils.php'
  -
    uuid: 1eebf878-8ba0-6756-8594-99d84c92580c
    question: 'What is the short open tag for PHP?'
    answers:
      - { value: '<!', correct: false }
      - { value: '<%', correct: false }
      - { value: '<?', correct: true }
      - { value: '<?=', correct: false }
    help: 'https://www.php.net/manual/en/language.basic-syntax.phptags.php'
  -
    uuid: 1eebf878-8ba0-67a6-ad3b-99d84c92580c
    question: 'Which of these operators is non-associative?'
    answers:
      - { value: '!', correct: false }
      - { value: '**', correct: false }
      - { value: '<', correct: true }
      - { value: and, correct: false }
    help: 'https://www.php.net/manual/en/language.operators.precedence.php'
  -
    uuid: 1eebf878-8ba0-67ec-9eef-99d84c92580c
    question: 'Since PHP 5.6+, if function foo() is defined in the namespace Myapp\Utils\Bar and your code is in namespace Myapp, what is the correct way to import the foo() function?'
    answers:
      - { value: 'use function foo;', correct: false }
      - { value: 'use Myapp\Utils\Bar\foo;', correct: false }
      - { value: 'use function Myapp\Utils\Bar\foo;', correct: true }
      - { value: 'use Utils\Bar\Foo;', correct: false }
    help: 'https://www.php.net/manual/en/language.namespaces.importing.php'
  -
    uuid: 1eebf878-8ba0-6878-9688-99d84c92580c
    question: 'Which web services are supported natively in PHP?'
    answers:
      - { value: 'SOAP and XML-RPC', correct: true }
      - { value: 'REST and SOAP', correct: false }
      - { value: 'Corba and XML-RPC', correct: false }
      - { value: 'XML-RPC and REST', correct: false }
    help: 'https://www.php.net/manual/en/refs.webservice.php'
  -
    uuid: 1eebf878-8ba0-699a-b7c4-99d84c92580c
    question: 'Which of the following function declarations must be used to return a reference?'
    answers:
      - { value: 'function &foo() {...}', correct: true }
      - { value: 'function $foo() {...}', correct: false }
      - { value: 'function %foo() {...}', correct: false }
      - { value: 'function $$foo() {...}', correct: false }
    help: 'https://www.php.net/manual/en/language.references.return.php'
  -
    uuid: 1eebf878-8ba0-69e0-80a7-99d84c92580c
    question: 'Which keyword is used to indicate that a class or method is incomplete and must be extended or implemented to be used?'
    answers:
      - { value: abstract, correct: true }
      - { value: final, correct: false }
      - { value: protected, correct: false }
      - { value: incomplete, correct: false }
      - { value: implements, correct: false }
    help: 'https://www.php.net/manual/en/language.oop5.abstract.php'
  -
    uuid: 1eebf878-8ba0-6ab2-b754-99d84c92580c
    question: 'A closure is a lambda function that is aware of its surrounding context.'
    answers:
      - { value: 'True', correct: true }
      - { value: 'False', correct: false }
    help: 'https://www.php.net/manual/en/functions.anonymous.php'
  -
    uuid: 1eebf878-8ba0-6bd4-9a5b-99d84c92580c
    question: 'in a class, public $var4 = self::myStaticMethod(); is a valid property declaration ?'
    answers:
      - { value: 'True', correct: false }
      - { value: 'False', correct: true }
    help: 'https://www.php.net/manual/en/language.oop5.properties.php#example-1'
  -
    uuid: 1eebf878-8ba0-6c6a-b940-99d84c92580c
    question: 'Declaring class properties or methods as static makes them accessible without needing an instantiation of the class ?'
    answers:
      - { value: 'True', correct: true }
      - { value: 'False', correct: false }
    help: 'https://php.net/manual/en/language.oop5.static.php'
  -
    uuid: 1eebf878-8ba0-6cb0-91ef-99d84c92580c
    question: 'Which keyword permit to use the late static binding ?'
    answers:
      - { value: self, correct: false }
      - { value: static, correct: true }
      - { value: parent, correct: false }
    help: 'https://php.net/manual/en/language.oop5.late-static-bindings.php'
  -
    uuid: 1eebf878-8ba1-6b74-9168-99d84c92580c
    question: 'Which of the following are supported visibilities for class attributes and methods in PHP ?'
    answers:
      - { value: Protected, correct: true }
      - { value: Friend, correct: false }
      - { value: Private, correct: true }
      - { value: Public, correct: true }
      - { value: Global, correct: false }
    help: 'https://php.net/manual/en/language.oop5.visibility.php'
  -
    uuid: 1eebf878-8ba2-622c-b66a-99d84c92580c
    question: 'What PHP function is used to return an array containing values present in two or more passed arrays?'
    answers:
      - { value: array_common, correct: false }
      - { value: array_union, correct: false }
      - { value: array_intersect, correct: true }
      - { value: array_walk, correct: false }
    help: 'https://php.net/array'
  -
    uuid: 1eebf878-8ba2-648e-9eb7-99d84c92580c
    question: 'What is the SPL?'
    answers:
      - { value: 'The Standard PHP Library, a collection of classes and interfaces which provides common data structures, iterators, exceptions and classes to manipulate files. It also provides functions to handle and configure autoload.', correct: true }
      - { value: 'The Session Provider Library, a collection of functions and internals to provide more advanced ways of dealing with sessions in PHP. It provides means to get more user-agent information, store sessions on various persistence platforms, and tracing options', correct: false }
      - { value: 'The Sandbox Process Library, an environment designed to run PHP in a completely isolated way to test dangerous or potentially problematic code without risking compromising the rest of the server. I/O operations are completely disabled among other features', correct: false }
      - { value: 'The Service Priority List, a set of functions to register classes and objects as services and define their loading priority, for performance optimization purposes.', correct: false }
    help: 'https://www.php.net/manual/en/book.spl.php'
  -
    uuid: 1eebf878-8ba3-6154-81ff-99d84c92580c
    question: 'Is the __call feature enabled by default?'
    answers:
      - { value: 'No', correct: true }
      - { value: 'Yes', correct: false }
    help: 'https://symfony.com/doc/current/components/property_access/introduction.html#magic-call-method'
  -
    uuid: 1eebf878-8ba3-653c-8129-99d84c92580c
    question: "Consider the following code snippet: trigger_error('This method is deprecated.'); Which of the following is valid way to catch and process errors that were triggered with the trigger_error() function?"
    answers:
      - { value: "try { trigger_error('This method is deprecated.'); } catch (\\Error $e) { // do something }", correct: true }
      - { value: 'set_error_handler(function ($level, $message, $file, $line, array $vars = []) { error_log($message); }))', correct: false }
      - { value: '$errors = get_triggered_errors();', correct: false }
      - { value: "try { trigger_error('This method is deprecated.'); } catch (\\Exception $e) { // do something ... }", correct: false }
    help: 'https://php.net/manual/en/function.error-log.php'
  -
    uuid: 1eebf878-8ba3-673a-a520-99d84c92580c
    question: "Given the following code, what will be displayed? $a = (object) ['a' => 'a']; $b = (object) ['a' => 'a']; echo $b <=> $a;"
    answers:
      - { value: '0', correct: true }
      - { value: '1', correct: false }
      - { value: '-1', correct: false }
    help: 'https://www.php.net/manual/en/language.operators.comparison.php'
  -
    uuid: 1eebf878-8ba3-6dc0-bb50-99d84c92580c
    question: 'What is the most recommended way to count the number of occurences of each unique value in the following array? $a=[1,1,2,3,4,4,5,6,6,6,3,2,2,2];'
    answers:
      - { value: '$ = array_unique($a);$k = array_fill(0,count($k), 0);$n = array_combine($k, $v);reset($a);for($i =0; $i < count($a); $i++){++$n[current($a)];', correct: false }
      - { value: '$n = array_count_values($a);', correct: true }
      - { value: '$n = count($a);', correct: false }
      - { value: '$n = array_total_values($a);', correct: false }
      - { value: '$ = array_unique($a);$k = array_fill(0,count($k), 0);$n = array_combine($k, $v);foreach( $a as $i){ ++$n[$i];}', correct: false }
    help: 'https://php.net/manual/en/function.array-count-values.php'
  -
    uuid: 1eebf878-8ba3-6e56-af20-99d84c92580c
    question: 'Which of the following variables is not serializable to JSON with the json_encode() native function?'
    answers:
      - { value: "$data ={ 'full_name' =>'Pierre Dupont' ,'location'=>[ 'city' =>'Paris' , 'country' =>'France' ]];", correct: false }
      - { value: "$data = new SomeClass('some string' );", correct: false }
      - { value: "$data = 'foo bar ';", correct: false }
      - { value: '$data = function ($content){ return (strtoupper(strip_tags(content)));};', correct: true }
    help: 'https://php.net/manual/en/book.json.php'
  -
    uuid: 1eebf878-8ba3-6f78-8a74-99d84c92580c
    question: 'Which interface should be implemented when putting together all the required parts (token, provider, listener) for a custom authentication system ?'
    answers:
      - { value: Symfony\Component\Security\Guard\GuardAuthenticatorInterface, correct: false }
      - { value: Symfony\Component\Security\Core\Authentication\AuthenticationManagerInterface, correct: false }
      - { value: Sensio\Bundle\FrameworkExtraBundle\EventListener\SecurityListenerInterface, correct: false }
      - { value: Symfony\Component\Security\Http\Authenticator\AbstractAuthenticator, correct: true }
    help: 'https://symfony.com/doc/current/security/custom_authenticator.html'
  -
    uuid: 1eebf878-8ba4-6dc4-8bee-99d84c92580c
    question: 'Which encryption means is used to secure credentials when authenticating an HTTP request with the HTTP Basic mechanism?'
    answers:
      - { value: 'Asymmetric-key encryption', correct: false }
      - { value: 'Hashing (md5, sha1, etc.)', correct: false }
      - { value: 'Credentials are not encrypted and transmitted in plain text in the HTTP request.', correct: false }
      - { value: 'Symmetric-key encryption', correct: false }
      - { value: 'Credentials are not encrypted but only Base64 encoded.', correct: true }
    help: 'https://en.wikipedia.org/wiki/Basic_access_authentication'
  -
    uuid: 1eebf878-8ba4-6e14-8119-99d84c92580c
    question: 'Can interfaces inherit from other interfaces in PHP?'
    answers:
      - { value: 'Yes', correct: true }
      - { value: 'No', correct: false }
    help: 'https://php.net/interfaces'
  -
    uuid: 1eebf878-8ba4-6f04-8c84-99d84c92580c
    question: 'How do you remove an element with the key 0 from the array $numbers?'
    answers:
      - { value: '$numbers[0] = null;', correct: false }
      - { value: 'unset($numbers[0]);', correct: true }
      - { value: array_pop($numbers);, correct: false }
      - { value: array_shift($numbers);, correct: false }
    help: 'https://php.net/manual/en/function.unset.php'
  -
    uuid: 1eebf878-8ba6-6868-a41d-99d84c92580c
    question: 'Since which PHP version can you use generators ?'
    answers:
      - { value: 'PHP 5.3', correct: false }
      - { value: 'PHP 7.0', correct: false }
      - { value: 'PHP 5.6', correct: false }
      - { value: 'PHP 5.4', correct: false }
      - { value: 'PHP 5.5', correct: true }
    help: 'https://www.php.net/ChangeLog-5.php'
  -
    uuid: 1eeda3fc-6f1f-6b00-ba24-216aef5bea70
    question: 'What is the purpose of the Chain User Provider ?'
    answers:
      - { value: 'It combines two or more providers to create a new user provider. sorted they are looked one after the other until user is found', correct: true }
      - { value: 'This user provider stores all user information in a configuration file, including their passwords.', correct: false }
      - { value: 'User Access are stored in a Chain software like Stackifor.', correct: false }
    help: 'https://symfony.com/doc/current/security/user_providers.html#chain-user-provider'
  -
    uuid: 1eedb041-7713-6f86-9b4d-9d3b2d641bb6
    question: 'Why might you pass false to $security->logout(false) in the Security component?'
    answers:
      - { value: 'To disable CSRF protection', correct: true }
      - { value: 'To disable the default redirection', correct: false }
      - { value: 'To disable the firewall', correct: false }
      - { value: 'To limit login attempts, preventing the user from logging in for 5 minutes', correct: false }
    help: 'https://symfony.com/doc/current/security.html#logout-programmatically'
  -
    uuid: 1eee6d98-7a23-6338-9026-cd57d9ba16db
    question: 'Where can be set an attribute whith readonly property ? in php8.1'
    answers:
      - { value: 'in the _construct method', correct: true }
      - { value: 'in a setter method', correct: false }
      - { value: 'at the attribute declaration', correct: false }
    help: 'https://www.php.net/manual/en/language.oop5.properties.php'
  -
    uuid: 1ef91ee9-2c61-6638-a132-0bd629c34f6d
    question: "Which native function should be used to generate a cryptographically secure random integer?"
    answers:
      - { value: "random_int()", correct: true }
      - { value: "mt_rand()", correct: false }
      - { value: "rand()", correct: false }
      - { value: "lcg_value()", correct: false }
    help: 'https://www.php.net/manual/en/ref.random.php'