What is the name of the PHP function used to automatically load non-yet defined classes?

After executing a SELECT query on a database server,

Which of the following are valid identifiers (Choose 3)

What is the output of the following code?
<code>
1 <?php
2 for ($i = 0; $i < 1.02; $i += 0.17) {
3 $a[$i] = $i;
4 }
5 echo count($a);
6 ?>
</code>

Transactions are used to:

What piece of code would you use to obtain an array of response headers for a given URL,
indexed by their respective names?

Some databases support the LIMIT clause. It is a method to ensure that …

What is the output of the following code?
<code>
printf(‘%4$d %2$s sit on 2 trees and eat %3$3.2f %1$s’, “bananas”, “monkeys”, 9, 99);
</code>

Given the default PHP configuration, how can all of the parameters provided via GET be accessed
in a form of a string?

Given the default PHP configuration, how can all of the parameters provided via GET be accessed
in a form of a string?