定義和用法

connection_status() 函數(shù)返回當(dāng)前的連接狀態(tài)。

可返回的可能值：

• 0 - CONNECTION_NORMAL - 連接運(yùn)行正常
• 1 - CONNECTION_ABORTED - 連接由用戶或網(wǎng)絡(luò)錯(cuò)誤終止
• 2 - CONNECTION_TIMEOUT - 連接超時(shí)
• 3 - CONNECTION_ABORTED & CONNECTION_TIMEOUT

語法

connection_status()

例子

<?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;
?>