Which of the following is an invalid DOM save method?

After running this sort, what will be the value of $b?
$a = array(‘_!’, ‘def’, 0);
$b = sort($a);

Which of the following functions are used to escape data within the context of HTML?
(Choose 2)

Which of the following configuration directives increase the risk of remote code injection when
enabled? (Choose 2)

Which of the following XML declarations is NOT valid?

Which of the following statements about SOAP is NOT true?

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

What is the purpose of the 4th argument to the file_get_contents() function?

What object method specifies post-serialization behavior for an object?

What will the following function call return?
<code>
strstr(‘http://example.com/test/file.php’, ‘/’);
</code>