multiple image buttons

[skyj635]

I have a page where I want to use small image buttons to change the main picture on the page. I'm trying to do this by using a frame that will display code from a php document with an if statement in it that will decide on the correct picture to display in the frame. I cannot get the value from the <image> tag.
this is how i have it.

<input type="image" src="http://localhost/picture1.jpg" name="picture" value="1">
<input type="image" src="http://localhost/picture2.jpg" name="picture" value="2">

now the way i want it to work is if picture equals 2, display a page and if it equals 3 display a different page. But I can't get the value from $_POST['picture'].

Is this possible with images?

[thorpe]

are these input tags inside a form?

[skyj635]

yes this is the full form

<form action="handle.php" method="post">
<input type="image" src="http://localhost/picture.jpg name="picture" value="1">
<input type="image" src="http://localhost/picture2.jpg" name="picture" value="2">
</form>

[Weedpacket]

That's because there is no form variable named $_POST['picture'].

They won't contain the values you want them too, either.

IMAGE SUBMIT variable names

When submitting a form, it is possible to use an image instead of the standard submit button with a tag like:

<input type="image" src="image.gif" name="sub" />

When the user clicks somewhere on the image, the accompanying form will be transmitted to the server with two additional variables, sub_x and sub_y. These contain the coordinates of the user click within the image.

You don't get the "value" attribute.

[skyj635]

So in order for me to know what image was clicked I'd have to compare the x and y coordinates with the sub_x and sub_y submited by the form.

Am I close?

P.S. and when you say sub_x and sub_y will be transmitted to the server does that mean these values can be accessed on the next page using the $_SERVER variable?

[Weedpacket]

Originally posted by skyj635
So in order for me to know what image was clicked I'd have to compare the x and y coordinates with the sub_x and sub_y submited by the form.

Am I close?

P.S. and when you say sub_x and sub_y will be transmitted to the server does that mean these values can be accessed on the next page using the $_SERVER variable?

No, and half-yes.

No, because your two image buttons have the same name, so although you can tell where the image button was clicked, you still can't tell which button was clicked.

Half-yes, because those variables are in the next page but not in the $_SERVER[] array; they're in the same array as all the other form variables.

[gufmn]

Maybe I'm misunderstanding what you're trying to do, but since you're using frames, why not just do something like:

<a target="the_frame" href="yourpage.php?image=1"><img src="image.jpg"></a>

Then just grab $_GET['image'] in yourpage.php

?

[skyj635]

Thanks for the help guys. I think I'm going to use your method Gufmn. Thanks for the info Weedpacket.