200-710

In the following code, which classes can be instantiated? abstract class Graphics { abstract function draw($im, $col); } abstract class Point1 extends Graphics { public $x, $y; } function _construct($x, $y) { $this->x = $x; $this->y = $y; } function draw($im, $col) { lmageSetPixel($im, $this->x, $this->y, $col); } class Point2...

What is the name of the function that allows you register a set of functions that implement user-defined session handling?A . session_set_handler()B . session_set_storage_handler()C . session_register_handler()D . session_set_save_handler()View AnswerAnswer: D

Which of the following filtering techniques prevents all cross-site scripting (XSS) vulnerabilities?A . Strip all occurrences of the string <script.B . Strip all occurrences of the string javascript.C . Enable magic_quotes_gpc.D . None of the above.View AnswerAnswer: D

Which technique should be used to speed up joins without changing their results?A . Add indices on joined columnsB . Add a WHERE clauseC . Add a LIMIT clauseD . Use an inner joinView AnswerAnswer: A

Which of the following will NOT instantiate a Date Time object with the current timestamp?A . $date= new DateTime();B . $date= new DateTime('@' . time());C . $date= new DateTime('now');D . $date = new DateTime(time());View AnswerAnswer: D

From your PHP application, how can you send the same header twice, but with different values?A . Set the second argument of the header () function to falseB . PHP does that automaticallyC . You may only send a particular type of header onceD . Use the header_add() functionView AnswerAnswer:...

What is the preferred method for preventing SQL injection?A . Always using prepared statements for all SQL queries.B . Always using the available database-specific escaping functionality on all variables prior to building the SQL query.C . Using addslashes() to escape variables to be used in a query.D . Using htmlspecialchars()...

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);A . A GET request will be performed on http://example.com/submit.phpB . A...

Which of the following statements about exceptions is correct? (Choose 2)A . you can only throw classes derived from ExceptionB . a try block can have multiple catch blocksC . a try block must not be followed by a catch blockD . try blocks cannot contain nested try blocksView AnswerAnswer:...

What is the output of the following code? var dump(boolval(-1));A . bool(true)B . bool(false)View AnswerAnswer: A