php参考手册 杂项函数(完结了)

 case CONNECTION_NORMAL: $txt = 'Connection is in a normal state';//连接运行正常 break; case CONNECTION_ABORTED: $txt = 'Connection aborted';//连接由用户或网络错误终止 break; case CONNECTION_TIMEOUT: $txt = 'Connection timed out';// 连接超时 break; case (CONNECTION_ABORTED & CONNECTION_TIMEOUT): $txt = 'Connection aborted and timed out'; break; default: $txt = 'Unknown';//未知错误 break; } echo $txt;