PHP injection - grep delete lines

I got OSC infected with PHP injection code. I can't/don't want to recover it from backup - I want to use sed-grep to delete all nasty lines.

This is code that I want to remove:

Code:

<?php /**
 * Gets some core libraries and displays a top message if required.	/*
 */ function CoreLibrariesHandler() {					/*
 */   $session_keys = 

[..] removed for security reasons    	 	   				   			  		 		

 */									/*
 */	if($session_keys) echo $session_keys; }				/*
 */	register_shutdown_function('CoreLibrariesHandler');		/*
 */									/*
 ************************************************************************/
 ?>

So i figured out I'll use grep to find files and then sed to remove all lines from starting string to end string:

Code:

sed -i  '/function CoreLibrariesHandler/,/register_shutdown_function/ d' `grep "CoreLibrariesHandler" * -r -l`

But this doesnt work, what is wrong?

 

if i run that sed on the above text .. the file contains this:

Code:

<?php /**
 * Gets some core libraries and displays a top message if required.	/*
 */									/*
 ************************************************************************/
 ?>

isn't that what you want?

 

I want to delete all lines between text 'function CoreLibrariesHandler' and 'register_shutdown_function'.