last-occurrence – Tarik Billa

How to find the last occurrence of an item in a Python list

January 2, 2023 by Tarik

If you are actually using just single letters like shown in your example, then str.rindex would work handily. This raises a ValueError if there is no such item, the same error class as list.index would raise. Demo: >>> li = [“a”, “b”, “a”, “c”, “x”, “d”, “a”, “6”] >>> ”.join(li).rindex(‘a’) 6 For the more general … Read more

Replace last occurrence of a string in a string

November 12, 2022 by Tarik

You can use this function: function str_lreplace($search, $replace, $subject) { $pos = strrpos($subject, $search); if($pos !== false) { $subject = substr_replace($subject, $replace, $pos, strlen($search)); } return $subject; }