Here, Dot(.) is used to concate the statements. <br> tag is used to break the line. <?php $a=10; $b=20; echo "Value of a = $a"."<br>"; echo "Value of b = $b"."<br>"; echo "<br> ***Arithmetic Operator*** <br>"; $c=$a+$b; echo "Addition of $a and $b = $c"."<br>"; $c=$a-$b; echo "Subtraction of $a and $b = $c"."<br>"; $c=$a*$b; echo "Multiplication of $a and $b = $c"."<br>"; $c=$a/$b; echo "Division of $a and $b = $c"."<br>"; echo "<br> ***Comparison Operator*** <br>"; if($a>$b) { echo "$a is greater than $b <br>"; } else if($a<$b) { echo "$a is less then $b <br>"; } else if($a==$b)…