如何检查是否已输入session_start?

问题描述

我有一个第三方脚本，想知道如何在执行某些操作之前使用PHP检查是否已声明session_start()?

I have a third party script and was wondering how I can check with PHP if session_start() has been declared before doing something?

something like if(isset($_session_start())) { //do something } 

推荐答案

if(!isset($_SESSION)) {
     session_start();
}

该检查将使您能够保持当前会话的活动，即使它是一个回送提交应用程序，您也计划在该应用程序中重复使用该表单，如果数据输入不正确或在程序中进行进一步的检查和平衡后，再继续执行下一个程序.

The check will allow you to keep your current session active even if it's a loop back submission application where you plan to reuse the form if data is typed incorrectly or have additional checks and balances within your program before proceeding to the next program.

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