emerg 紧急 - 系统无法使用。 "Child cannot open lock file. Exiting"
alert 必须立即采取措施。 "getpwuid: couldn't determine user name from uid"
crit 致命情况。 "socket: Failed to get a socket, exiting child"
error 错误情况。 "Premature end of script headers"
warn 警告情况。 "ch
PHP学习笔记