Help me out here on Php quotation marks

Question

Can you pls explain the difference between single and double quotation marks in php used on variables. For example, $num1 = '1'; $num2="5"; echo "$num1+ $num2"; What will be the out here? Thank you for the answer in advance.

Answer 1

There is no difference. Just make sure to use the same ones to open and close the string.
Examples:

Good: "Hi!"
Bad: "Hi!'

You can also use the single quotes inside double quotes and the other way round.

Examples:

Good: "Paul's answer"
Bad: 'Paul's answer'

Hope I could clarify things a little!
:)

Answer 2

thank you Paul Grasser, I kinda know what u just said; but can u see the echo statement, it has quotation marks for variables. What would that be like? I had this in one of the challenges I had