<?php
class Libs_Log_Logger {
const TRANSFER_ERROR = 'LOG转换失败，非LOG信息';
const LOG_FILENAME = 'output.log';
/**
* 本函数用于取代系统的error_log错误日志记录函数
* @param string|array|object|bool|int $log 需要记录的错误信息，可以是格式良好的任意类型
* @param string $filename 保存日志信息的文件名，默认存储路径为sites/app/storage/log/output.log
* @param bool $append 是否以追加的形式添加日志信息，默认追加
*/
public static function outputLog($log, $filename = self::LOG_FILENAME, $append = true) {
if (!plum_setmod_dir(PLUM_APP_LOG)) {
return;
}
$filename = PLUM_APP_LOG . '/' . $filename;
$mode = $append ? 'a' : 'w';
if (!($handler = @fopen($filename, $mode))) {
//文件流打开失败时触发错误，并退出
trigger_error('LOG日志文件打开失败', E_USER_WARNING);
return;
}
//获取调用跟踪
$trace = debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 1);
$debug = self::log_format(array('file' => $trace[0]['file'], 'line' => $trace[0]['line']));
$info = self::log_format($log);
//开始写入
if (($write_byte = fwrite($handler, $debug.$info)) === false) {
$error_msg = 'LOG日志写入失败';
//检查磁盘空间
$free_space = disk_free_space(PLUM_APP_LOG);
//磁盘空间不足
if ($free_space && $write_byte > $free_space) {
$error_msg .= '磁盘空间不足';
}
//写入失败时，触发错误并退出
trigger_error($error_msg, E_USER_WARNING);
fclose($handler);
return;
}
//关闭文件流
fclose($handler);
}
/**
* 输出信息到控制台
*/
public static function outputConsoleLog($log) {
//非控制台调用直接退出
if (php_sapi_name() != 'cli') {
//die('请在控制台下执行脚本');
return;
}
$info = self::log_format($log);
fwrite(STDOUT, $info);
}
/**
* 返回格式化的LOG日志信息
* @param $log
* @return string
*/
private static function log_format($log) {
$log_type = 'Unknown';
if (is_array($log)) {
//数组进行json序列化
$log_type = 'Array';
$loginfo = self::json_encode_helper($log);
} else if (is_object($log)) {
$log_type = 'Object';
$loginfo = self::json_encode_helper($log);
} else if (is_string($log)) {
$log_type = 'String';
$loginfo = $log;
} else if (is_bool($log)) {
$log_type = 'Bool';
$loginfo = $log ? 'true' : 'false';
} else if (is_numeric($log)) {
$log_type = 'Number';
$loginfo = strval($log);
} else if (is_null($log)) {
$log_type = 'Null';
$loginfo = 'null';
} else {
$loginfo = strval($log);
}
//再一次判断，排查转换出错的情况
if (!is_string($loginfo)) {
$errno = json_last_error();
switch ($errno) {
default :
$loginfo = self::TRANSFER_ERROR.";错误号：{$errno};错误信息：".json_last_error_msg();
break;
}
}
//添加换行符
$loginfo .= "\n";
$format = "[".date('Y/m/d H:i:s', time())."] $log_type: $loginfo";
return $format;
}
/*
* utf8格式转换
*/
private static function utf8ize( $mixed ) {
if (is_array($mixed)) {
foreach ($mixed as $key => $value) {
$mixed[$key] = self::utf8ize($value);
}
} elseif (is_string($mixed)) {
//$mixed = mb_convert_encoding($mixed, "UTF-8", "UTF-8");
$mixed = utf8_encode($mixed);
} elseif (is_object($mixed)) {
foreach ($mixed as $key => $value) {
$mixed->$key = self::utf8ize($value);
}
}
return $mixed;
}
private static function json_encode_helper($var) {
switch (gettype($var)) {
case 'boolean':
return $var ? 'true' : 'false'; // Lowercase necessary!
case 'integer':
case 'double':
return $var;
case 'resource':
case 'string':
// Always use Unicode escape sequences (\u0022) over JSON escape
// sequences (\") to prevent browsers interpreting these as
// special characters.
$replace_pairs = array(
// ", \ and U+0000 - U+001F must be escaped according to RFC 4627.
'\\' => '\u005C',
'"' => '\u0022',
"\x00" => '\u0000',
"\x01" => '\u0001',
"\x02" => '\u0002',
"\x03" => '\u0003',
"\x04" => '\u0004',
"\x05" => '\u0005',
"\x06" => '\u0006',
"\x07" => '\u0007',
"\x08" => '\u0008',
"\x09" => '\u0009',
"\x0a" => '\u000A',
"\x0b" => '\u000B',
"\x0c" => '\u000C',
"\x0d" => '\u000D',
"\x0e" => '\u000E',
"\x0f" => '\u000F',
"\x10" => '\u0010',
"\x11" => '\u0011',
"\x12" => '\u0012',
"\x13" => '\u0013',
"\x14" => '\u0014',
"\x15" => '\u0015',
"\x16" => '\u0016',
"\x17" => '\u0017',
"\x18" => '\u0018',
"\x19" => '\u0019',
"\x1a" => '\u001A',
"\x1b" => '\u001B',
"\x1c" => '\u001C',
"\x1d" => '\u001D',
"\x1e" => '\u001E',
"\x1f" => '\u001F',
// Prevent browsers from interpreting these as as special.
"'" => '\u0027',
'<' => '\u003C',
'>' => '\u003E',
'&' => '\u0026',
// Prevent browsers from interpreting the solidus as special and
// non-compliant JSON parsers from interpreting // as a comment.
//'/' => '\u002F',
// While these are allowed unescaped according to ECMA-262, section
// 15.12.2, they cause problems in some JSON parsers.
"\xe2\x80\xa8" => '\u2028', // U+2028, Line Separator.
"\xe2\x80\xa9" => '\u2029', // U+2029, Paragraph Separator.
);
return '"' . strtr($var, $replace_pairs) . '"';
case 'array':
// Arrays in JSON can't be associative. If the array is empty or if it
// has sequential whole number keys starting with 0, it's not associative
// so we can go ahead and convert it as an array.
if (empty($var) || array_keys($var) === range(0, sizeof($var) - 1)) {
$output = array();
foreach ($var as $v) {
$output[] = self::json_encode_helper($v);
}
return '[ ' . implode(', ', $output) . ' ]';
}
// Otherwise, fall through to convert the array as an object.
case 'object':
$output = array();
foreach ($var as $k => $v) {
$output[] = self::json_encode_helper(strval($k)) . ':' . self::json_encode_helper($v);
}
return '{' . implode(', ', $output) . '}';
default:
return 'null';
}
}
}
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