PHP: What's the difference between ' (single) and " (double)?

[Question Everything!]

Is text between " and " always treated as text? e.g. echo '$name' will echo the value but "$name" wont?
What are the differences? (if any)

 

[Nithya]

Single quotes print the variable, but double quotes print the value of the variable.

For Example:

$var = "text";
echo '$var'; // prints $var
echo "$var"; //prints the value of $var, ie., text.