[SOLVED] Next/Back buttons

[DannyM]

Hello once more!

I've found a strange glitch with my forward/backward buttons. When you click forward, everything works fine as it goes to the next value within the array. However, if you hit back, the variable $_SESSION['current'] will increase by one before it begins to go down again. The same is true if you click back a few times, then click forward. The $_SESSION['current'] will decrease once before it begins to increase again. How would one prevent this?

 

//FORWARD
if(isset($_POST["next"]))
{
if($_SESSION['current'] >= $_SESSION['pagenum'])
{
$_SESSION['current'] = ($_SESSION['pagenum']-1);
}

echo $_SESSION['current'];
echo "<br/>";
echo ($testArray[$_SESSION['current']]);
$_SESSION['current']++;


}

//BACK
if(isset($_POST["back"]))
{
if($_SESSION['current'] < 0)
{
$_SESSION['current']=0;
}

echo $_SESSION['current'];
echo "<br/>";
echo ($testArray[$_SESSION['current']]);
$_SESSION['current']--;

}

 

 

 

-----------------

 

I've discovered how to fix the glitch. I made sure the $_SESSION['current'] was equal to it's current value after increment/decrement by adding in the line

$_SESSION['current']==$_SESSION['current']

And I moved my greater than list/less than 0 checks below that statement, but above the echo.

 

It works now!