Online PHP editor | output for Kumk4

<?php var_dump(strcoll('foo', 'bar')); // behaves as stated in https://www.php.net/manual/en/function.strcoll.php var_dump(strcmp('foo', 'bar')); # is not returning -1, 0, or 1 as stated in https://www.php.net/manual/en/function.strcmp.php var_dump(strcasecmp('foo', 'bar')); # is not returning -1, 0, or 1 as stated in https://www.php.net/manual/en/function.strcasecmp.php var_dump(strnatcmp('foo', 'bar')); // behaves as stated in https://www.php.net/manual/en/function.strnatcmp.php var_dump(strnatcasecmp('foo', 'bar')); // behaves as stated in https://www.php.net/manual/en/function.strnatcasecmp.php var_dump(strncmp('foo', 'bar', 1)); # is not returning -1, 0, or 1 as stated in https://www.php.net/manual/en/function.strncmp.php var_dump(strncasecmp('foo', 'bar', 1)); # is not returning -1, 0, or 1 as stated in https://www.php.net/manual/en/function.strncasecmp.php var_dump(version_compare('8', '11')); // behaves as stated in https://www.php.net/manual/en/function.version-compare.php