What is the method used to execute XPath queries in the SimpleXML extension?
Which interfaces could class C implement in order to allow each statement in the following code to work? (Choose 2)
$obj = new C();
foreach ($obj as $x => $y) {
echo $x, $y;
}
Given the following code, what is correct?
function f(stdClass &$x = NULL) { $x = 42; }
$z = new stdClass;
f($z);
var_dump($z);
Which PHP function sets a cookie and URL encodes its value when sending it to the browser?
Transactions should be used to: (Choose 2)
Consider the following table data and PHP code. What is a possible 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);
$cmd = "SELECT name, email FROM users LIMIT 1";
$stmt = $pdo->prepare($cmd);
$stmt->execute();
$result = $stmt->fetchAll(PDO::FETCH_BOTH);
$row = $result[0];
How many elements does the array $matches from the following code contain?
$str = "The cat sat on the roof of their house.";
$matches = preg_split("/(the)/i", $str, -1, PREG_SPLIT_DELIM_CAPTURE);
What is the output of the following code?
for ($i = 0; $i < 1.02; $i += 0.17) {
$a[$i] = $i;
}
echo count($a);
Consider the following code. What can be said about the call to file_get_contents?
$getdata = "foo=bar";
$opts = array('http' =>
array(
'method' => 'POST',
'header' => 'Content-type: application/x-www-form-urlencoded',
'content' => $getdata
)
);
$context = stream_context_create($opts);
$result = file_get_contents('http://example.com/submit.php', false, $context);
What is the output of the following code?
var_dump(boolval(-1));
