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日志类如下，news目录为当前php文档根目录下子目录。
<?php<br /> if( ! defined('BASEPATH') ) {<br /> define ('BASEPATH', $_SERVER['DOCUMENT_ROOT'].'/news/');<br /> }<br /> require_once BASEPATH.'config/config.inc.php';<br /> require_once BASEPATH.'config/constants.php';</p> <p>define ("LOG_PATH", $config['log']['log_path']);<br /> define ("LOG_DATE_FORMAT", $config['log']['log_date_format']);</p> <p>/**<br /> * Logging Class<br /> * @subpackage Libraries<br /> * @category Logging<br /> * @link<br /> */</p> <p>class CI_Log {</p> <p> var $log_path = '../logs/';<br /> var $_threshold = 4;<br /> var $_date_fmt = 'Y-m-d H:i:s';<br /> var $_enabled = TRUE;<br /> var $_levels = array('ERROR' => '1', 'DEBUG' => '2', 'INFO' => '3', 'ALL' => '4');</p> <p> /**<br /> * Constructor<br /> *<br /> * @access public<br /> */<br /> function CI_Log()<br /> {<br /> if( defined(LOG_PATH) )<br /> {<br /> $this->log_path = LOG_PATH;<br /> }<br /> if ( ! is_dir($this->log_path))<br /> {<br /> $this->_enabled = FALSE;<br /> }</p> <p> if ( defined(LOG_DATE_FORMAT) )<br /> {<br /> $this->_date_fmt = LOG_DATE_FORMAT;<br /> }<br /> }</p> <p> // --------------------------------------------------------------------</p> <p> /**<br /> * Write Log File<br /> *<br /> * Generally this function will be called using the global log_message() function<br /> *<br /> * @access public<br /> * @param string the error level<br /> * @param string the error message<br /> * @param bool whether the error is a native PHP error<br /> * @return bool<br /> */<br /> function write_log($level = 'error', $msg, $php_error = FALSE)<br /> {<br /> if ($this->_enabled === FALSE)<br /> {<br /> return FALSE;<br /> }</p> <p> $level = strtoupper($level);</p> <p> if ( ! isset($this->_levels[$level]) OR ($this->_levels[$level] > $this->_threshold))<br /> {<br /> return FALSE;<br /> }</p> <p> $filepath = $this->log_path.'log-'.date('Y-m-d').'.log';<br /> $message = '';</p> <p> if ( ! $fp = @fopen($filepath, FOPEN_WRITE_CREATE))<br /> {<br /> return FALSE;<br /> }</p> <p> $message .= $level.' '.(($level == 'INFO') ? ' -' : '-').' '.date($this->_date_fmt). ' --> '.$msg."/n";</p> <p> flock($fp, LOCK_EX);<br /> fwrite($fp, $message);<br /> flock($fp, LOCK_UN);<br /> fclose($fp);</p> <p> @chmod($filepath, FILE_WRITE_MODE); </p> <p> return TRUE;<br /> }</p> <p>}<br /> // END Log Class</p> <p>/* End of file Log.php */
配置文件
config.inc.php
<?php<br /> /**<br /> * 配置文件<br /> */<br /> if( ! defined('BASEPATH') ) {<br /> define ('BASEPATH', $_SERVER['DOCUMENT_ROOT'].'/news/');<br /> }<br /> //数据库设定<br /> $config['db']=array(<br /> );<br /> //日志文件目录<br /> $config['log']=array(<br /> 'log_date_format' => 'Y-m-d H:i:s',<br /> 'log_path' => '../logs/'<br /> );</p> <p>?>
constants.php
<?php </p> <p>define('FILE_READ_MODE', 0644);<br /> define('FILE_WRITE_MODE', 0666);<br /> define('DIR_READ_MODE', 0755);<br /> define('DIR_WRITE_MODE', 0777);</p> <p>/*<br /> |--------------------------------------------------------------------------<br /> | File Stream Modes<br /> |--------------------------------------------------------------------------<br /> |<br /> | These modes are used when working with fopen()/popen()<br /> |<br /> */</p> <p>define('FOPEN_READ', 'rb');<br /> define('FOPEN_READ_WRITE', 'r+b');<br /> define('FOPEN_WRITE_CREATE_DESTRUCTIVE', 'wb'); // truncates existing file data, use with care<br /> define('FOPEN_READ_WRITE_CREATE_DESTRUCTIVE', 'w+b'); // truncates existing file data, use with care<br /> define('FOPEN_WRITE_CREATE', 'ab');<br /> define('FOPEN_READ_WRITE_CREATE', 'a+b');<br /> define('FOPEN_WRITE_CREATE_STRICT', 'xb');<br /> define('FOPEN_READ_WRITE_CREATE_STRICT', 'x+b');</p> <p>/* End of file constants.php */<br />
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