(PHP 4, PHP 5, PHP 7)
strrchr — Find the last occurrence of a character in a string
   This function returns the portion of haystack which
   starts at the last occurrence of needle and goes
   until the end of haystack.
  
haystackThe string to search in
needle
       If needle contains more than one character,
       only the first is used. This behavior is different from that of
       strstr().
      
  If needle is not a string, it is converted
  to an integer and applied as the ordinal value of a character.
  This behavior is deprecated as of PHP 7.3.0, and relying on it is highly
  discouraged. Depending on the intended behavior, the
  needle should either be explicitly cast to string,
  or an explicit call to chr() should be performed.
 
   This function returns the portion of string, or FALSE if
   needle is not found.
  
Example #1 strrchr() example
<?php
// get last directory in $PATH
$dir = substr(strrchr($PATH, ":"), 1);
// get everything after last newline
$text = "Line 1\nLine 2\nLine 3";
$last = substr(strrchr($text, 10), 1 );
?>
Note: This function is binary-safe.