<?php  
    //define(LOG4PHP_DIR, "third_part/log4php");  
	//define('LOG4PHP_CONFIGURATION', "");
      
    require_once('/third_part/log4php/LoggerManager.php');  
    $str = "here is test string!";  
    echo "这里是PHP的输出, 与log4php无关哟!<br>";  
    $logger = LoggerManager::getLogger('test');  
    if ("" != $str) {  
          $logger->debug("str的值不为空! 它的值为: " . $str . "<br>");  
    }  
    if (strlen($str) > 4) {  
        $logger->debug("str的长度大于4!" . "<br>");  
    }  
    LoggerManager::shutdown();  
    ?>