update numbers with if statement

[pooker]

Alright i appreciat your guys helps and fast responses.  , as you can see, there is a submit button and when clickt it invokes the php if statement at the top, well of course when you click next I want it to go to the next image, so I used number to increase but it is not increasing the number to change the image, does anyone know why?

 

 

<?php

if(isset($_POST['submit'])) {

 

$number=$number +1;

 

}

$dir = './mangareader/bleach/chapter1/';

$images = count(glob("$dir{*.jpg,*.JPG,*.png}", GLOB_BRACE));

 

echo 'You are on page '. $number . ' of '  . $images; ?>

<form action="<?=$_SERVER['PHP_SELF'];?>" method="post">

<input type="submit" name="submit" value="Next">

</form>

 

 

 

</br>

<?

echo "<img src=\"./mangareader/bleach/chapter1/$number.png\">";

 

?>

[whizard]

Where is $number getting its value? When u click submit, it reloads the page. All the variables will be reset.

 

You might want to set a hidden form value with the current number and then increment that.

 

Dan

[pooker]

I was confused about that when reading up on it, do you think you could explain how I could do that? 

 

Also here is something I am wondering if could work? Th only problm is thinking how to change that value on on click like when it refreshes the page i use the get to store the value from the url, but then I need to put that value back in the link.

 

<?php

 

$value= $_GET['Next']

 

 

$dir = './mangareader/bleach/chapter1/';

$images = count(glob("$dir{*.jpg,*.JPG,*.png}", GLOB_BRACE));

 

echo 'You are on page '. $value . ' of '  . $images; ?>

 

<input type="submit" name="submit" value="Next" onclick="window.location.href=page.php?Next=(value);">

 

 

 

 

</br>

<?

echo "<img src=\"./mangareader/bleach/chapter1/$value.png\">";

 

?>

 

[whizard]

That's more or less what I was getting at. However, you will need to increment value so that you always go to the next photo and not the same one over and over again. I'm not a big fan of $_GET, so I would do it like this:

 

<?php
$value = $_POST['value']

$dir = './mangareader/bleach/chapter1/';
$images = count(glob("$dir{*.jpg,*.JPG,*.png}", GLOB_BRACE));

//Somewhere in here you need to actually show the image, correct?

echo 'You are on page '. $value . ' of '  . $images; ?>

//You will pass newValue back through the hidden form field and that will be the next picture.
$newValue = $value++;

?>
<form action="<?php print $_SERVER['PHP_SELF']; ?>" method="post">
<input type="hidden" name="value" value="<?php print $newValue; ?>" />
<input type="submit" name="submit" value="Next">
</form>
</br>

<?php
echo "<img src=\"./mangareader/bleach/chapter1/$value.png\">";
?>

 

HTH

Dan

[xyn]

with your code you could try:

<?php
$number =$_GET['number'];
if($number) $number +=1;
$dir = './mangareader/bleach/chapter1/';
$images = count(glob("$dir{*.jpg,*.JPG,*.png}", GLOB_BRACE));

print "You are on page $number of  $images";
?>
<form action="?number=<?=$number?>" method="post">
<input type="submit" name="submit" value="Next">
</form>
</br>
<img src="./mangareader/bleach/chapter1/<?=$number?>.png">

[whizard]

You still need to increment $number or it will keep linking to the same pic.

[xyn]

Ok, i tested this, and it works...

<?php
$number =$_GET['number'];
$dir = './mangareader/bleach/chapter1/';
$images = count(glob("$dir{*.jpg,*.JPG,*.png}", GLOB_BRACE));

print "You are on page $number of  $images";
?>
<form action="?number=<?=$number+1?>" method="post">
<input type="submit" name="submit" value="Next">
</form>
</br>
<img src="./mangareader/bleach/chapter1/<?=$number?>.png">

[pooker]

wow thank you man so much I am learning so much in my first week, I didn't realise you could increment a variable in an action like that, that makes things so much more easier.  Thank you very much!

[DarkWater]

Ok, i tested this, and it works...

<?php
$number =$_GET['number'];
$dir = './mangareader/bleach/chapter1/';
$images = count(glob("$dir{*.jpg,*.JPG,*.png}", GLOB_BRACE));

print "You are on page $number of  $images";
?>
<form action="?number=<?=$number+1?>" method="post">
<input type="submit" name="submit" value="Next">
</form>
</br>
<img src="./mangareader/bleach/chapter1/<?=$number?>.png">

 

Except don't use short tags. =/

[whizard]

Technically he's not incrementing the variable, he's sending the value of the variable plus one. But anyhow. And like DarkWater said, don't use short tags.

 

Dan