#2869 sqspell_ereg error in php 7.2

[Aiden Woodruff]

Hi, I'm having trouble using squirrelspell. With a correctly spelled email, I get the "no errors found page". When I type "donde esta la biblioteca" I get a 500 error. This is the error in my php error log:
```
[05-Jan-2024 10:36:37 America/Chicago] PHP Fatal error: Uncaught Error: Call to undefined function ereg() in /usr/share/squirrelmail/plugins/squirrelspell/modules/check_me.mod:214
Stack trace:

0 /usr/share/squirrelmail/plugins/squirrelspell/sqspell_interface.php(58): require_once()

1 {main}

thrown in /usr/share/squirrelmail/plugins/squirrelspell/modules/check_me.mod on line 214
```

I am using PHP 7.2.34 and SquirrelMail 1.4.23 [SVN]-1.el7.20190710

[Barry Nelson]

I am using PHP 8.2.1 and I am getting the same error 500