php记录日志的实现代码

＄ss_log_level = 0; 
＄ss_log_filename = /tmp/ss－log; 

＄ss_log_levels = array( 

 NONE => 0, 

 ERROR => 1, 

 INFO => 2, 

 DEBUG => 3 
); 
//设置日志级别 

function ss_log_set_level (＄level = ERROR) { 

 global ＄ss_log_level; 

 ＄ss_log_level = ＄level; 

} 
//记录日志 
function ss_log (＄level, ＄message) { 
 global ＄ss_log_level, ＄ss－log－filename; 

 if (＄ss_log_levels[＄ss_log_level] < ＄ss_log_levels[＄level]) { 

 // 不显示Log信息 

 return false; 

 } 

 ＄fd = fopen(＄ss_log_filename, "a＋"); 

 fputs(＄fd, ＄level. － [.ss_times*****p_pretty().] － .＄message."n"); 

 fclose(＄fd); 

 return true; 

} 
//清空日志 

function ss_log_reset () { 

 global ＄ss_log_filename; 

 @unlink(＄ss_log_filename); 

}

//调用示例

ss_log_set_level(INFO); ss_log(ERROR, "testing level ERROR"); 
ss_log(INFO, "testing level INFO"); 
ss_log(DEBUG, "testing level DEBUG"); 
ss_log_reset();