Defining a variable name = Alex echo name .
echo The above name is printed using PHP variables name

Concatenating two variables role = a student echo name . is . role .
echo The above statement was printed by concatenating two variables

Comparing two numbers and printing the result num1 = 7 num2 = 15 if (num1 < num2) echo num1 . is smaller than . num2 .
else echo num1 . is not smaller than . num2 .