200-500 試験問題を無料オンラインアクセス

Which of the following commands will append data to an existing file?

• A.file_put_contents("file", "a", "data");
• B.file_put_contents("file", "data", FILE_APPEND);
• C.file_put_contents("file", "a", NULL, FILE_APPEND);
• D.file_put_contents("file", "data", "a");

What will be the output value of the following code?
$array = array(1,2,3);
while (list(,$v) = each($array));
var_dump(current($array));

• A.int(3)
• B.NULL
• C.bool(false)
• D.Array
• E.int(1)

How can the line on which HTTP headers were sent inside a script be determined?

• A.Using the output_start() function.
• B.Cannot be determined
• C.Using the headers_sent() function.
• D.Using the ob_start() function.

Which options do you have in PHP to set the expiry date of a session?

• A.Set session cookie expiry date locally via session_set_cookie_params()
• B.Set session expiry date locally via session_cache_expire()
• C.Set the session.duration directive in php.ini
• D.None of the above

Which technique should be used to speed up joins without changing their results?

• A.Add a WHERE clause
• B.Add indices on joined columns
• C.Use an inner join
• D.Add a LIMIT clause