JAPH是Just another Perl hacker（中文：另一个Perl黑客）的缩写，指一个可以打印出“Just another Perl hacker,”的Perl进程，结尾的逗号有时候也可以忽略。JAPH进程通常会使用一种极端混淆的编写方式，在这一点上与混乱C语言有着相同的精神。最早的JAPH是由en:Randal L. Schwartz发表在comp.lang.perl新闻组，他将一段可以打印出JAPH的Perl代码放在自己的签名档里。此后，编写JAPH成为Perl社区的一种网络文化。

Just another Perl hacker, or JAPH, typically refers to a Perl program which prints "Just another Perl hacker," (the comma is canonical but is occasionally omitted). Short JAPH programs are often used as signatures in online forums, or as T-shirt designs. The phrase or acronym is also occasionally used (without code) for a signature.