[RESOLVED] how would the script detect

jansky

to all guru

i have this one code
<body>
<form name="form1" method="post" action="<?=$_SERVER['PHP_SELF']?>>
<input name="Convert" type="image" border="0" alt="Excel" src="image/Excel.gif" value="Excel">
<input type="submit" name="Submit" value="Submit">
</form>

How would i detect if i click on Excel Image?

help_wanted

Use java script.

Have a hidden field lets say named clicked. Then on your Convert input have onfocus(some jvscript) or onchange() I don't remeber. Then have the java script update the hidden field to a value of 1. then the user posts the form, have you php look at the value and if is 0 do something, if is 1 do something else:

Give that a try, I have not tested it but I think it will work

Weedpacket

If you click on an image input field, that causes the form to submit (so your submit button is redundant). The submitted form data would include fields Convert_x and Convert_y, specifying the coordinates of the image pixel that was clicked.

http://www.php.net/manual/en/language.variables.external.php#language.variables.external.form.submit
http://www.w3.org/TR/html4/interact/forms.html#h-17.4.1

LoganK

Weedpacket wrote:
If you click on an image input field, that causes the form to submit (so your submit button is redundant). The submitted form data would include fields Convert_x and Convert_y, specifying the coordinates of the image pixel that was clicked.

That is one of the stupidest ideas I've ever heard a browser/the W3C implement. Who would ever want to know where the user clicked? We just want to know if the user clicked!!!

drew010

LoganK wrote:
That is one of the stupidest ideas I've ever heard a browser/the W3C implement. Who would ever want to know where the user clicked? We just want to know if the user clicked!!!

server side image maps would need this functionality so it knows which url to send to. this is where an image is generated and you must click a certain spot and the server then sees where you clicked and determine what you clicked on.

LoganK

To be honest, I've never heard of server side image maps. What's really the point of them? Even if it is a dynamically-generated image, you can still use regular image maps!

drew010

the thing about the client side maps, is that each part of the image is sectioned by html code specifying the shapes and coordinates at which each section exists. if you generate the image server side it could be possible but would take more code to generate a client side image map with all the right coordinates. plus it can be cleverly used for captcha images that require a user to click on a certain part of the image to verify they are human.

LoganK

Allright then...I understand the captcha part at least 😃
Thanks!

jansky

hey guyz thanks a lot i added a javascript to do this
this si the script
<script>
function excel()
{
document.form1.action="?excel=yes";
document.form1.submit();
}
</script>

and this is the way how to trigger it
<input name="Convert" type="image" border="0" alt="Excel" src="image/Excel.gif" value="Excel" onclick="excel()">

now in my script

<?
if (@$_GET['excel']=='yes')
{
blah blah blah
}
?>

LoganK

Not the easiest way, but if it works, it works 😃 Glad you got it solved!