gistfile1.aw

<?php

if( ! function_exists('get_called_class') ) :
	function get_called_class($bt = false,$l = 1) {
	    if (!$bt) $bt = debug_backtrace();
	    if (!isset($bt[$l])) throw new Exception("Cannot find called class -> stack level too deep.");
	    if (!isset($bt[$l]['type'])) {
	        throw new Exception ('type not set');
	    }
	    else switch ($bt[$l]['type']) {
	        case '::':
	            $lines = file($bt[$l]['file']);
	            $i = 0;
	            $callerLine = '';
	            do {
	                $i++;
	                $callerLine = $lines[$bt[$l]['line']-$i] . $callerLine;
	            } while (stripos($callerLine,$bt[$l]['function']) === false);
	            preg_match('/([a-zA-Z0-9\_]+)::'.$bt[$l]['function'].'/',
	                        $callerLine,
	                        $matches);
	            if (!isset($matches[1])) {
	                // must be an edge case.
	                throw new Exception ("Could not find caller class: originating method call is obscured.");
	            }
	            switch ($matches[1]) {
	                case 'self':
	                case 'parent':
	                    return get_called_class($bt,$l+1);
	                default:
	                    return $matches[1];
	            }
	            // won't get here.
	        case '->': switch ($bt[$l]['function']) {
	                case '__get':
	                    // edge case -> get class of calling object
	                    if (!is_object($bt[$l]['object'])) throw new Exception ("Edge case fail. __get called on non object.");
	                    return get_class($bt[$l]['object']);
	                default: return $bt[$l]['class'];
	            }
	
	        default: throw new Exception ("Unknown backtrace method type");
	    }
	}
endif;