Changeset 52040 for trunk/tests/phpunit/tests/compat/strEndsWith.php

General: Introduce polyfills for str_ends_with() and str_starts_with() added in PHP 8.0.

PHP 8.0 introduced two new functions: str_ends_with() and str_starts_with(). These perform a case-sensitive check indicating if the string to search in (haystack) ends or begins with the given substring (needle).

These polyfills make these functios available for use in Core.

Ref:

• PHP RFC ​https://wiki.php.net/rfc/add_str_starts_with_and_ends_with_functions
• PHP manual str_ends_with() ​https://www.php.net/manual/en/function.str-ends-with.php
• PHP manual str_starts_with() ​https://www.php.net/manual/en/function.str-starts-with.php

Props costdev, hellofromTonya, pbearne, pbiron.
Fixes #54377.