$where="product_code='pc' AND user='testuser' AND test='test\\\\' AND active=1";
$x=$dbobject->getData($where);

function extractValue (&$where)
// extract value from a WHERE string where the value is delimited by either
// single or double quotes.
// WARNING: any ending delimiter which is escaped must be ignored.
// NOTE: $where is passed by reference so that it can be modified
{
	
    // the first character is the delimiter (single or double quote)
    $delimiter = substr($where, 0, 1);
    if ($delimiter == '"' or $delimiter == "'" or $delimiter == ' ' or $delimiter == '(') {
        // delimiter is valid
    } else {
        // no valid delimiter found, so use a space instead
        $delimiter = ' ';
    } // if

    // look for ending delimiter
    if ($delimiter == "'" or $delimiter == '"') {
        // delimiter may be escaped with preceeding '\'
        
        // CHANGE JADJ
        //$pattern = '/(\\\\' .$delimiter .'|' .$delimiter .')/';
        $pattern = '/(\\\\+' .$delimiter .'|' .$delimiter .')/';
        
         } elseif ($delimiter == ' ') {
        $pattern = "/ /";
    } else {
        // look for closing parenthesis
        $pattern = "/\)/";
    } // if

    if (preg_match($pattern, $where, $regs, PREG_OFFSET_CAPTURE, 1)) {
        $found  = $regs[0][0];
        $endpos = $regs[0][1];
        
        
        // CHANGE JADJ
        // check if length of found is odd or even..
        $odd_found_len=strlen($found) & 1;  
        
        // CHANGE JADJ
        // length of found has to be odd if it's the end of the fieldvalue
        // So continue searching...
        while (!$odd_found_len) {
            // found an escaped delimiter, so ignore it
            // CHANGE JADJ
            preg_match($pattern, $where, $regs, PREG_OFFSET_CAPTURE, $endpos+ strlen($found));
            $found = $regs[0][0];
            $endpos = $regs[0][1];
            
            // CHANGE JADJ            
            $odd_found_len=strlen($found) & 1;
            
        } // while
        
        
        // CHANGE JADJ
        // if we had a match we need another way to get the fieldvalue than in the old version
        // extract the string portion which exists between the two delimiters
        $fieldvalue = rtrim(substr($where, 0, $endpos + strlen($found)));
    } else {
        // not found so....
        if ($delimiter == '(') {
            // add missing delimiter
        	$where .= ')';
        } // if
        // extract remainder of string
        $endpos = strlen($where);
        
        // CHANGE JADJ
        // Not found. We have to use the old way to get the fieldvalue
        // extract the string portion which exists between the two delimiters
        $fieldvalue = rtrim(substr($where, 0, $endpos + 1));
    } // if

    
	
    if (substr($fieldvalue, -1) == ')') {
        // last character is ')' so first character must be '('
        if (substr($fieldvalue, 0, 1) != '(') {
        	// no match found, so remove trailing ')'
            $fieldvalue = substr($fieldvalue, 0, -1);
        } // if
    } // if
    // remove $fieldvalue from the front of the string
    $where = substr($where, strlen($fieldvalue));

    return $fieldvalue;

} // extractValue