爆炸字符串并添加一个数字？ PHP

Question

i'm realy done with this. My problem is the following:

code:

<?php
$highest = 0;
$string = "a.1";

$array = explode(".",$string);
$highest = $array[1];

$final = "secound value is: ".$highest++;

echo $final;
?>

All i want is adding something to the number in the $string. So as a result it should echo 2. However it echos 1.

Whats wrong?

Answer 1

Use pre-increment:

$final = "secound value is: ".++$highest;

More info: Incrementing/Decrementing Operators