Question

I have this scipt call:

....
$objResponse->addScriptCall("my_script");
return $objResponse->sendResponse();

This works ok but if I try to send a php mail just before, the script is not called:

...
$send =& $mailer->Send(); 
$objResponse->addScriptCall("my_script");
return $objResponse->sendResponse();

Why is that happening?
The problem persists even if I replace the email function with a plain:

...
print 'hello'; 
$objResponse->addScriptCall("my_script");
return $objResponse->sendResponse();

Answer 1

You need to call error_reporting(0); ini_set('display_errors', 0); at the top of your script.

The $mailer->Send() call is triggering an error, which is being echoed. This is causing a Javascript syntax error which will, as you say, break your Javascript.

This is why calling print "hello"; also breaks it, because you then have a random, meaningless hello at the top of your Javascript.