php debug

/**
 *
 * 打印调试日志
 * @param string $errmsg
 */
function new_debug($msg) {
    $info = debug_backtrace ();                                                                                               
    $file = $info [0] ['file'];
    $line = $info [0] ['line'];
    if (is_array ( $msg ) || is_object ( $msg )) {
        new_log ( $file, $line, json_encode ( $msg ), 'DEBUG' );
    } else {
        new_log ( $file, $line, $msg, 'DEBUG' );
    }   
}

/**
 * 记录日志，要确保路径是存在
 * @param  $mess
 * @param  $path
 */
function new_log($file, $line, $mess, $level = 'LOG') {

    $today = date ( "Y/m/d H:i:s" );
    $path = APP_PATH.'/logs/debug.log';
    
    $trans_tbl = get_html_translation_table ( HTML_ENTITIES );
    $trans_tbl = array_flip ( $trans_tbl ); 
    $mess = strtr ( $mess, $trans_tbl );                                                                                      
    
    $fp = fopen ( $path, "a+" );
    if ($fp) {
        fwrite ( $fp, $today . " [" . $file . ' ' . $line . "][" . $level . "] " . $mess . " from " . $_SERVER ['REMOTE_ADDR'] . "\r\n" );
        fclose ( $fp );
    }

}