(PHP 5 >= 5.2.0, PHP 7, PHP 8)
mb_strrichr — Finds the last occurrence of a character in a string within another, case insensitive
$haystack,$needle,$before_needle = false,$encoding = null
   mb_strrichr() finds the last occurrence of
   needle in haystack
   and returns the portion of haystack. Unlike
   mb_strrchr(), mb_strrichr() is
   case-insensitive.
   If needle is not found, it returns false.
  
haystack
       The string from which to get the last occurrence
       of needle.
      
needle
       The string to find in haystack.
      
before_needle
       Determines which portion of haystack
       this function returns. 
       If set to true, it returns all of haystack
       from the beginning to the last occurrence of needle.
       If set to false, it returns all of haystack
       from the last occurrence of needle to the end.
      
encodingПараметром
encoding вказується кодування символів. Якщо він
пропущений або null, використається внутрішнє кодування.
   Returns the portion of haystack.
   or false if needle is not found.
  
| Версія | Опис | 
|---|---|
| 8.0.0 | 
  needle тепер може бути порожнім рядком.
  | 
| 8.0.0 | 
  encoding тепер може бути null.
  |