Working with full name in php using switch or if else?

Question

PHP

Another question:
Let's say I have a mailing list by email to all users on my site. When registering, they indicated only IFO. How to write code using switch or if else so that a letter with a body, let's say "Dear ....." came only to men, and "Dear ...." to women? Without fetching a field from the database.
In fact, I just need a script so that I can manually write Smirnova Ekaterina Sergeevna into the variable and the letter is sent with the body "Dear ...", and if Ivanov Konstantin Sergeevich then "Dear ..."

Answer 1

$a = 'Смирнова Екатерина Сергеевна';
$rest = substr($a, -2, 2);
switch ($rest) {
  case 'ич':
    $hello = 'Уважаемый '.$a;
  break;
  case 'на':
    $hello = 'Уважаемая '.$a;
  break;	
  default:
    $hello = 'Уважаемый(-ая) '.$a;
  break;
}

Answer 2

No way

Answer 3

Cut out the last two letters from the end of the line, and:

if($last_str == 'ич') {
    $text = 'Уважаемый ...';
} else
{
    $text = 'Уважаемая ...';
}

This option is just not 100% perfect.

Answer 4

https://dadata.ru/suggestions/#name
Can be used to determine gender by name.

Answer 5

I was not just familiar with the string processing functions, but now I understand everything. Thank you very much for your help.