php 5.4中新增加对session状态判断的功能
在以前的php 版本中,要判断session是否有效,只能用如下的方法:
session_start();
if(isset($_SESSION))
{
echo "Started";
}
else
{
echo "Not Started";
}
session_start();
$status = session_status();
if($status == PHP_SESSION_DISABLED)
{
echo "Session is Disabled";
}
else if($status == PHP_SESSION_NONE )
{
echo "Session Enabled but No Session values Created";
}
else
{
echo "Session Enabled and Session values Created";
}
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