don't use PEAR::isError, use instanceof instead.

Net/EPP/Client.php

@@ -109,10 +109,14 @@
 		* @return PEAR_Error|string the frame returned by the server, or an error object
 		*/
 		function request($xml) {
-			if (PEAR::isError($res = $this->sendFrame($xml))) {
+			$res = $this->sendFrame($xml);
+			if ($res instanceof PEAR_Error) {
 				return $res;
+
+			} else {
+				return $this->getFrame();
+
 			}
-			return $this->getFrame();
 		}
 
 		/**

Net/EPP/Protocol.php

@@ -70,9 +70,8 @@ class Net_EPP_Protocol {
 	*/
 	static function getFrame($socket) {
 		// Read header
-		if (PEAR::isError($hdr = Net_EPP_Protocol::_fread_nb($socket,4))) {
-	       		return $hdr;
-		}
+		$hdr = Net_EPP_Protocol::_fread_nb($socket,4);
+		if ($hdr instanceof PEAR_Error) return $hdr;
 
 		// Unpack first 4 bytes which is our length
 		$unpacked = unpack('N', $hdr);