Which parts of the text are matched in the following regular expression?
$text = << The big bang bonged under the bung. EOT; preg_match_all('@b.n?g@', $text, $matches);
Given a JSON-encoded string, which code sample correctly indicates how to decode the string to native PHP values?
Consider the following table data and PHP code. What is the outcome?
Table data (table name "users" with primary key "id"):
id name email
------- ----------- -------------------
1 anna alpha@example.com
2 betty beta@example.org
3 clara gamma@example.net
5 sue sigma@example.info
PHP code (assume the PDO connection is correctly established):
$dsn = 'mysql:host=localhost;dbname=exam';
$user = 'username';
$pass = '********';
$pdo = new PDO($dsn, $user, $pass);
try {
$cmd = "INSERT INTO users (id, name, email) VALUES (:id, :name, :email)";
$stmt = $pdo->prepare($cmd);
$stmt->bindValue('id', 1);
$stmt->bindValue('name', 'anna');
$stmt->bindValue('email', 'alpha@example.com');
$stmt->execute();
echo "Success!";
} catch (PDOException $e) {
echo "Failure!";
throw $e;
}
What is the output of the following code?
function z($x) {
return function ($y) use ($x) {
return str_repeat($y, $x);
};
}
$a = z(2);
$b = z(3);
echo $a(3) . $b(2);
Which PHP function sets a cookie and URL encodes its value when sending it to the browser?
Given the following code, what is correct?
function f(stdClass &$x = NULL) { $x = 42; }
$z = new stdClass;
f($z);
var_dump($z);