Zend_Filter help required please

[Marcel]

Using Robbo's xfgamer45's Ad Manager is fine on PHP 5.3, however 5.4 and above it throws a depreciated /e modifier error, just like in this old bug report
https://xenforo.com/community/threads/errors-when-using-debug-mode-beta-4.54046/

The full error text is :

An exception occurred: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /Volumes/Data/127/xendev/library/Zend/Filter/PregReplace.php on line 171

1. XenForo_Application::handlePhpError()
2. preg_replace() in Zend/Filter/PregReplace.php at line 171
3. Zend_Filter_PregReplace->filter() in Zend/Filter/Word/SeparatorToCamelCase.php at line 49
4. Zend_Filter_Word_SeparatorToCamelCase->filter() in Zend/Filter.php at line 233
5. Zend_Filter::filterStatic() in Merc/AdManager/Common/Helper.php at line 79
6. Merc_Common_Helper_Version04::underscoreToCamelCase() in Merc/AdManager/Common/Model.php at line 110
7. Merc_Common_Model_Version04->__call() in Merc/AdManager/Listener.php at line 71
8. Merc_AdManager_Model_Position->getPositions() in Merc/AdManager/Listener.php at line 71
9. Merc_AdManager_Listener->getPositions() in Merc/AdManager/Listener.php at line 55
10. Merc_AdManager_Listener::frontControllerPreView()
11. call_user_func_array() in XenForo/CodeEvent.php at line 90
12. XenForo_CodeEvent::fire() in XenForo/FrontController.php at line 156
13. XenForo_FrontController->run() in /Volumes/Data/127/xendev/index.php at line 13

If I've done this correctly, it is step 5 that's the issue, the function code is :

public static function underscoreToCamelCase($string, $lowerCaseFirst = false)
        {
            $ret = Zend_Filter::filterStatic($string, 'Word_UnderscoreToCamelCase');
            return $lowerCaseFirst ? lcfirst($ret) : $ret;
        }

It's a long shot, but is this the function that's causing the issue when it calls the relevant part of the Zend Framework? If so, how do I change it to become compliant?

Any ideas? Thanks in advance.

 

[Chris D]

I think using regex and a callback to achieve this is overkill.

$string = 'underscore_to_camel_case';
$string = str_replace(' ', '', ucwords(str_replace('_', ' ', $string)));

That would return UnderscoreToCamelCase.

Naturally you can modify the first character accordingly should you need to.

 

[Marcel]

That's done the ticket, cheers