<?php
$a = 10;
echo 'Value of $a is :'.$a;
echo "\n"."After Pre-increment value of $a ( i.e. ++$a ) is: ".++$a;
$a = 20;
echo "\n"." Value of $a is :".$a;
echo '<br />After Post-increment value of $a ( i.e. $a++ ) is: '.$a++;
$a = 30;
echo '<br />Value of $a is :'.$a;
echo '<br />After Pre-decrement value of $a ( i.e. --$a ) is: '.--$a;
$a = 40;
echo '<br />Value of $a is :'.$a;
echo '<br />After Post-decrement value of $a ( i.e. $a-- ) is: '.$a--;
?>
Value of $a is :10
After Pre-increment value of 10 ( i.e. ++10 ) is: 11
Value of 20 is :20<br />After Post-increment value of $a ( i.e. $a++ ) is: 20<br />Value of $a is :30<br />After Pre-decrement value of $a ( i.e. --$a ) is: 29<br />Value of $a is :40<br />After Post-decrement value of $a ( i.e. $a-- ) is: 40