What's the most efficient test of whether a PHP string ends with another string?

Question

The standard PHP way to test whether a string $str ends with a substring $test is:

$endsWith = substr( $str, -strlen( $test ) ) ==          


        

Answer 1

In PHP 8:

str_ends_with('haystack', 'stack'); // true
str_ends_with('haystack', 'K'); // false

and also:

str_starts_with('haystack', 'hay'); // true

PHP RFC: Add str_starts_with(), str_ends_with() and related functions