Show an error after submitting - php

Question

I want to show an error (in phpBB it's trigger_error) right after the user clicks submit.
I already have a function which checks if a link has been posted. Now I want to call it after the submit post button has been clicked.
Where do I find that? Probably in posting.php?

Answer 1

Open posting.php.
find around line 631
if ($submit || $preview || $refresh)
{
after add
$post_data['your_url'] = "http://www.damienkeitel.com/index.php"; //remove the equals and url value if using in real post
$your_url = $post_data['your_url'];
$your_url_exists = (isset($your_url)) ? true : false;
$your_url = preg_replace(array('#&\#46;#','#&\#58;#','/\[(.*?)\]/'), array('.',':',''), $your_url);
if ($your_url_exists && http_file_exists($your_url) == true)
{
trigger_error('yeah, its reachable');
}
else if ($your_url_exists && http_file_exists($your_url) == false)
{
trigger_error('what da hell..');
}
open functions_posting
find around line 19
/**
* Fill smiley templates (or just the variables) with smilies, either in a window or inline
*/
after add
function http_file_exists($url)
{
$f = #fopen($url,"r");
if($f)
{
fclose($f);
return true;
}
return false;
}