Unclear return value of strcmp

[YuanchengJiang]

Description

The following code:

<?php
$a = "foosa";
$b = "fooaaaaaaaaaaaaaaaaaaaaaaaaaaa";

var_dump(strcmp($a,$b)); // int(18)

The document says it only returns -1,0,1. In practice, it still returns a negative or positive value.

If the negative or positive values are expected, then the following case returns a huge value, which is unexpected to me.

https://3v4l.org/4dV2h/rfc#vgit.master

PHP Version

nightly

Operating System

ubuntu 22.04

[damianwadley]

This is somewhat intended behavior. See php/doc-en#3223 for more information, and php/doc-en#3629 to fix the documentation.