What will be the values of $a and $b after the code below is executed? $a = '1'; $b = &$a; $b = "2$b";

What are traits for?

$a = '1'; $b = &$a; $b = '2$b';

What's the output?

What is the output of the following code? $foo = 'bar'; $bar = 'bar' $$foo = 'foo' echo '$foo', '$bar';

function output? Fn($a){ switch($a){ case $a>1: echo '1'; case $a===2: echo '2'; case $a>2: echo '3'; } } outputFn(2); What's the output of the outputFn function?

Which is a php resource?

Given: $email = ‘bob@example.com’; which code block will output example.com?

How to open file in read/write mode?

Which function is used to display the properties of variable?

In PHP5 >= 5.3.0, which new operator was added?