how to replace a placeholder in a string?

Question

Not very sure how to word this question but I\'ll give an example.

$string = \'Hey, $name. How are you?\'; 

When I post this string,

Answer 1

You should be wrapping the string in double quotes (") if you want variables to be expanded:

$name = "Alica";
$string = "Hey, $name. How are you?"; // Hey, Alica. How are you?

See the documentation.