diff --git a/library/log4php/filters/LoggerFilterStringMatch.php b/library/log4php/filters/LoggerFilterStringMatch.php
deleted file mode 100644
--- a/library/log4php/filters/LoggerFilterStringMatch.php
+++ /dev/null
@@ -1,89 +0,0 @@
-<?php
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- *       http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * @package log4php
- */
-
-/**
- * This is a very simple filter based on string matching.
- *
- * <p>The filter admits two options {@link $stringToMatch} and
- * {@link $acceptOnMatch}. If there is a match (using {@link PHP_MANUAL#strpos}
- * between the value of the {@link $stringToMatch} option and the message
- * of the {@link LoggerLoggingEvent},
- * then the {@link decide()} method returns {@link LoggerFilter::ACCEPT} if
- * the <b>AcceptOnMatch</b> option value is true, if it is false then
- * {@link LoggerFilter::DENY} is returned. If there is no match, {@link LoggerFilter::NEUTRAL}
- * is returned.</p>
- *
- * <p>
- * An example for this filter:
- *
- * {@example ../../examples/php/filter_stringmatch.php 19}
- *
- * <p>
- * The corresponding XML file:
- *
- * {@example ../../examples/resources/filter_stringmatch.xml 18}
- *
- * @version $Revision: 1213283 $
- * @package log4php
- * @subpackage filters
- * @since 0.3
- */
-class LoggerFilterStringMatch extends LoggerFilter {
-
-    /**
-     * @var boolean
-     */
-    protected $acceptOnMatch = true;
-
-    /**
-     * @var string
-     */
-    protected $stringToMatch;
-
-    /**
-     * @param mixed $acceptOnMatch a boolean or a string ('true' or 'false')
-     */
-    public function setAcceptOnMatch($acceptOnMatch) {
-        $this->setBoolean('acceptOnMatch', $acceptOnMatch);
-    }
-
-    /**
-     * @param string $s the string to match
-     */
-    public function setStringToMatch($string) {
-        $this->setString('stringToMatch', $string);
-    }
-
-    /**
-     * @return integer a {@link LOGGER_FILTER_NEUTRAL} is there is no string match.
-     */
-    public function decide(LoggerLoggingEvent $event) {
-        $msg = $event->getRenderedMessage();
-
-        if ($msg === null or $this->stringToMatch === null) {
-            return LoggerFilter::NEUTRAL;
-        }
-
-        if (strpos($msg, $this->stringToMatch) !== false) {
-            return ($this->acceptOnMatch) ? LoggerFilter::ACCEPT : LoggerFilter::DENY;
-        }
-        return LoggerFilter::NEUTRAL;
-    }
-}