Definition and Usage
定义和用法

The connection_status() function returns the current connection status.
connection_status()函数的作用是：返回当前的连接状态。

Possible values that can be returned are:
该参数返回的值如下：

• 0 - CONNECTION_NORMAL - connection is running normally
  0 - CONNECTION_NORMAL – 连接正常
• 1 - CONNECTION_ABORTED - connection is aborted by user or network error
  1 - CONNECTION_ABORTED – 连接被用户放弃或由于网络错误放弃
• 2 - CONNECTION_TIMEOUT -  connection timed out
  2 - CONNECTION_TIMEOUT – 连接超时
• 3 - CONNECTION_ABORTED & CONNECTION_TIMEOUT
  3 - CONNECTION_ABORTED 和 CONNECTION_TIMEOUT -连接被用户放弃或由于网络错误放弃，或者连接超时

Syntax
语法

connection_status()

Example
案例

<?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
?>

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