Variable $a has not been declared. With error reporting turned off, what is the result of: $a[1][2]=3;?

Which string delimiting methods is known as the heredoc syntax?

Which character is used to separate namespaces in PHP?

dirname(__FILE__) will return what?

Function to create your own streams using the PHP stream wrappers and register them within PHP?

What does the return code E_ERROR indicate?

Which are valid in PHP?

What is the output? $foo = 10; $bar = '10'; if ($foo === $bar){ echo 'I ran'; }

Function to check if a variable is an array or not?

How to set a particular time zone to be used by your PHP code?

Correct way to add 1 to the $a variable?