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

Which of the following function signatures is correct if you want to have classes automatically
loaded?

After executing a SELECT query on a database server,

How can a PHP extension be loaded? (Choose 2)

Which of the following parts must a XML document have in order to be well-formed?

You have a variable $test that contains sub-strings divided by a dash (“-“). How can you put every
sub-string into an array element easily?

What type of class definition can be used to define multiple inheritance?

How can the constant defined below be accessed from within PHP?
<code>
class myClass {
const FOO = ‘BAR’;
}
</code>

What is the output of the following code?
<code>
try {
class MyException extends Exception {};
try {
throw new MyException;
}
catch (Exception $e) {
echo “1:”;
throw $e;
}c
atch (MyException $e) {
echo “2:”;
throw $e;
}}
catch (Exception $e) {
echo get_class($e);
}
</code>

What function should be used to escape command line arguments that are passed to commands
executed from PHP?