What potential issue is the user experiencing with the strrchr function in PHP?

The potential issue the user is experiencing with the strrchr function in PHP is that it returns the substring starting from the last occurrence of a character in a string, including the character itself. To solve this issue and get the substring excluding the last occurrence of the character, you can use the substr function to extract the substring starting from the position after the last occurrence of the character.

$string = "hello/world/test";
$lastSlashPosition = strrpos($string, '/');
$substring = substr($string, 0, $lastSlashPosition);
echo $substring; // Output: hello/world