connection_status()
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实例
返回连接状态：
<?php
switch (connection_status())
{
case CONNECTION_NORMAL:
$txt = ‘Connection is in a normal state‘;
break;
case CONNECTION_ABORTED:
$txt = ‘Connection aborted‘;
break;
case CONNECTION_TIMEOUT:
$txt = ‘Connection timed out‘;
break;
case (CONNECTION_ABORTED & CONNECTION_TIMEOUT):
$txt = ‘Connection aborted and timed out‘;
break;
default:
$txt = ‘Unknown‘;
break;
}
echo $txt;
?>
switch (connection_status())
{
case CONNECTION_NORMAL:
$txt = ‘Connection is in a normal state‘;
break;
case CONNECTION_ABORTED:
$txt = ‘Connection aborted‘;
break;
case CONNECTION_TIMEOUT:
$txt = ‘Connection timed out‘;
break;
case (CONNECTION_ABORTED & CONNECTION_TIMEOUT):
$txt = ‘Connection aborted and timed out‘;
break;
default:
$txt = ‘Unknown‘;
break;
}
echo $txt;
?>
定义和用法
connection_status() 函数返回当前的连接状态。
可返回的可能值：
- 0 - CONNECTION_NORMAL - 连接运行正常
- 1 - CONNECTION_ABORTED - 连接由用户或网络错误终止
- 2 - CONNECTION_TIMEOUT - 连接超时
- 3 - CONNECTION_ABORTED & CONNECTION_TIMEOUT
语法
connection_status()
技术细节
| 返回值： | 返回连接状态位字段。 |
|---|---|
| PHP 版本： | 4+ |