PHP中的connection_status()函数
connection_status()函数返回连接状态。
语法
connection_status()
参数
不适用
返回
connection_status()函数返回以下可能的值。这是状态位字段-
0-CONNECTION_NORMAL-连接正常运行
1-CONNECTION_ABORTED-连接因用户或网络错误而中止
2-CONNECTION_TIMEOUT-连接超时
3-CONNECTION_ABORTED和CONNECTION_TIMEOUT
示例
以下是一个例子-
<?php
switch (connection_status()) {
case CONNECTION_NORMAL:
$msg = 'Connection is in a normal state!';
break;
case CONNECTION_ABORTED:
$msg = 'Connection aborted!';
break;
case CONNECTION_TIMEOUT:
$msg = 'Connection timed out!';
break;
case (CONNECTION_ABORTED & CONNECTION_TIMEOUT):
$msg = 'Connection aborted and timed out!';
break;
default:
$msg = 'Status is unknown!';
break;
}
echo $msg;
?>