Test/EVSE/GPL/php-5.6.40/ext/mbstring/tests/bug43841.phpt

--TEST--
Test mb_strrpos() function : mb_strrpos offset is byte count for negative values
--SKIPIF--
<?php
extension_loaded('mbstring') or die('skip');
function_exists('mb_strrpos') or die("skip mb_strrpos() is not available in this build");
?>
--FILE--
<?php
/* Prototype  : int mb_strrpos(string $haystack, string $needle [, int $offset [, string $encoding]])
 * Description: Find position of last occurrence of a string within another 
 * Source code: ext/mbstring/mbstring.c
 */

/*
 * Test that mb_strrpos offset is byte count for negative values (should be character count)
 */

$offsets = array(-25, -24, -13, -12);
$string_mb =
base64_decode('5pel5pys6Kqe44OG44Kt44K544OI44Gn44GZ44CCMDEyMzTvvJXvvJbvv
JfvvJjvvJnjgII=');
$needle = base64_decode('44CC');

foreach ($offsets as $i) {
	echo "\n-- Offset is $i --\n";
	echo "Multibyte String:\n";
	var_dump( mb_strrpos($string_mb, $needle, $i, 'UTF-8') );
	echo "ASCII String:\n";
	echo "mb_strrpos:\n";
	var_dump(mb_strrpos(b'This is na English ta', b'a', $i));
	echo "strrpos:\n";
	var_dump(strrpos(b'This is na English ta', b'a', $i));
}
?>

--EXPECTF--

-- Offset is -25 --
Multibyte String:

Warning: mb_strrpos(): Offset is greater than the length of haystack string in %s on line %d
bool(false)
ASCII String:
mb_strrpos:

Warning: mb_strrpos(): Offset is greater than the length of haystack string in %s on line %d
bool(false)
strrpos:

Warning: strrpos(): Offset is greater than the length of haystack string in %s on line %d
bool(false)

-- Offset is -24 --
Multibyte String:

Warning: mb_strrpos(): Offset is greater than the length of haystack string in %s on line %d
bool(false)
ASCII String:
mb_strrpos:

Warning: mb_strrpos(): Offset is greater than the length of haystack string in %s on line %d
bool(false)
strrpos:

Warning: strrpos(): Offset is greater than the length of haystack string in %s on line %d
bool(false)

-- Offset is -13 --
Multibyte String:
bool(false)
ASCII String:
mb_strrpos:
bool(false)
strrpos:
bool(false)

-- Offset is -12 --
Multibyte String:
int(9)
ASCII String:
mb_strrpos:
int(9)
strrpos:
int(9)