I need a PHP function to run on the click of a button..

[jblevins1991]

I had to redesign my blog cms with PHP due to JavaScripts inability to save changes to xml files. I need to make a delete function run when you click the delete button. It will delete the specified blog post.

Here is my code so far.

<?

$doc = new DOMDocument();
$doc->load("news.xml");

$channel = $doc->getElementsByTagName("channel");
$channel = $channel->item(0);

$items = $doc->getElementsByTagName("item");
$titles = $doc->getElementsByTagName("title");
$links = $doc->getElementsByTagName("link");
$descriptions = $doc->getElementsByTagName("description");

for($i = 0; $i < $items->length; $i++)
{
$title = simplexml_import_dom($titles->item($i));
$link = simplexml_import_dom($links->item($i));
$description = simplexml_import_dom($descriptions->item($i));

echo "<h6><a href=\"" . $link . "\">" . $title . "</a></h6>";
echo "<p id=\"text\">" . $description . "</p>";
echo "<input type=\"button\" value=\"delete\">";
}

?>

I know i cannot use the action attribute inside of a form because i cannot send the $i variable into the function that way. i need to somehow declare the function during the for loop so that way when i click the button it will execute on a specific value that lived in the $i variable at that time.

Here is the delete blog post code

function removePost($i)
{
$channel->removeChild("$items->item($);

echo "The specified blog post was deleted!";
}

[Natdrip]

inorder to do what you want your delete button will need to hold the node value
$i and also need to be type submit

ie.

<input type='submit' value='delete[$i]' name='Delete' /> 

each submit will need to be wrapped in it's own form

the other way you can achieve this is via href

ie.

<a href='processing-page.php?action=delete&value'.$i >Delete $i</a> 

[jblevins1991]

So the following would work?

<input type="submit" value="the_nodes_name[$i]" name="Delete" />

how would i use the value attribute in the php code?

[jblevins1991]

Can somebody clarify how i do what natdrip was talking about?

[criterion9]

If you take a look at _GET variables I think the examples there should help clarify for you.

[jblevins1991]

i see so if i use an array in this manner of setting the value to delet[$i] it will return only the ones that are clicked on?

[jblevins1991]

I understand now. Figured it out the day after i last posted but i want to clarify for those who might search this thread for future reference.

When using:

Link Click
<a href="delete.php?action=delete&value"></a> you are sending the value of the delete variable to the delete.php script. This allows you to retrieve the value with the $_GET superglobal array.

When using:

Button Click
<button type="submit" name="delete[{$i}]">delete</button> you are sending the value $i to the script delete.php or what ever script is in the forms action attribute. You can then retrieve the value with the $_GET superglobal array.

Note: Make sure to use a <button> element instead of an <input> element. this allows you to have the button say delete without it printing the value held in $i as show in Natdrips post. Its slightly cleaner.

Thank you Natdrip for showing me how this works. I appreciate it a lot!