passing variables to a function on a click on image

[killervastu]

Hey guys,

I want to pass the unique id of a node to a function when that image is clicked.

Actually i am a newbee in php so don't know what to search about or where to look for it,but find this place and you all guys so helpful so i am asking for a guide here :-\

[trq]

You would need to create a link that requests your php script. eg;

 

<a href="/yourscript.php?id=10"><img src="foo.png" /></a>

 

Then in yourscript.php the id will be within $_GET['id'].

[killervastu]

Thanks for reply but,

will it work if it should have to load the same page

i want to display 3 levels of a binary tree now if i click on the last node then the last node should take the position of the source node and should act like it i.e. display all the nodes below the clicked node up-to 3 levels again.

[trq]

will it work if it should have to load the same page

 

Yes.

[killervastu]

suppose if i am passing for the first time in source node the $_session['id'] then how will i change the value passed in the function on clicking

will this work

function ($var = $_session['id'])
{
code
}

[killervastu]

sorry appending the above,

if($var != '')
{
function($var);
}
else
{
function($var= $_session['id'])
}