如何后台执行某段程序？
各位大神，用户进入1.php页面后，执行两段程序A和B，因为A的执行时间比较长，对后续操作无影响；而B程序比较简单，且执行后会跳转到2.php，我希望实现在用户进入1.php后，就先执行B程序，然后跳转到2.php；但同时后台继续执行A程序直到处理完毕。是否能实现？谢谢各位大神！
回复讨论(解决方案)
1、php多线程
2、php伪线程
3、ajax异步
第一种，第二种百度以下就知道了，其中第一种比较费事，原理就是分出不同的线程或者进程同事访问这两个代码段，通过返回值进行跳转
B;
header('location: 2.php');
A;
谢谢两位大神，但思路为什么差异这么大呢？我看得懂xuzuning的思路，单不知道xuzuning，您的方案，能确保A程序能执行，且不影响我执行B程序和跳转到2.php？再次感谢！！！
谢谢两位老师！！！
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