--TEST--
Test mb_strstr() function : error conditions
--SKIPIF--
<?php
extension_loaded('mbstring') or die('skip');
function_exists('mb_strstr') or die("skip mb_strstr() is not available in this build");
?>
--FILE--
<?php
/* Prototype  : string mb_strstr(string haystack, string needle[, bool part[, string encoding]])
 * Description: Finds first occurrence of a string within another
 * Source code: ext/mbstring/mbstring.c
 * Alias to functions:
 */

echo "*** Testing mb_strstr() : error conditions ***\n";


//Test mb_strstr with one more than the expected number of arguments
echo "\n-- Testing mb_strstr() function with more than expected no. of arguments --\n";
$haystack = b'string_val';
$needle = b'string_val';
$part = true;
$encoding = 'string_val';
$extra_arg = 10;
var_dump( mb_strstr($haystack, $needle, $part, $encoding, $extra_arg) );

// Testing mb_strstr with one less than the expected number of arguments
echo "\n-- Testing mb_strstr() function with less than expected no. of arguments --\n";
$haystack = b'string_val';
var_dump( mb_strstr($haystack) );

?>
===DONE===
--EXPECTF--
*** Testing mb_strstr() : error conditions ***

-- Testing mb_strstr() function with more than expected no. of arguments --

Warning: mb_strstr() expects at most 4 parameters, 5 given in %s on line %d
NULL

-- Testing mb_strstr() function with less than expected no. of arguments --

Warning: mb_strstr() expects at least 2 parameters, 1 given in %s on line %d
NULL
===DONE===