--TEST--
Test mb_ereg() function : mb_ereg 'successfully' matching incorrectly
--SKIPIF--
<?php
extension_loaded('mbstring') or die('skip');
function_exists('mb_ereg') or die("skip mb_ereg() is not available in this build");
?>
--FILE--
<?php
/*
 * mb_ereg 'successfully' matching incorrectly:
 * Bug now seems to be fixed - error message is now generated when an 'empty'
 * pattern is supplied to mb_ereg. Similar error message to ereg().
 */

$unset_var = 10;
unset ($unset_var);
$inputs = array(NULL, null, false, FALSE, "", '', @$undefined_var,
@$unset_var);

$iterator = 1;
foreach($inputs as $input) {
    if(@is_array($mb_regs)){
        $mb_regs = '';
    }
    echo "\n-- Iteration $iterator --\n";
    echo "Without \$regs arg:\n";
    try {
        var_dump( mb_ereg($input, 'hello, world') );
    } catch (\ValueError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    echo "With \$regs arg:\n";
    try {
        var_dump(mb_ereg($input, 'hello, world', $mb_regs));
    } catch (\ValueError $e) {
        echo $e->getMessage() . \PHP_EOL;
    }

    var_dump($mb_regs);
    $iterator++;
};
?>
--EXPECT--
-- Iteration 1 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 2 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 3 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 4 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 5 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 6 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 7 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL

-- Iteration 8 --
Without $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
With $regs arg:
mb_ereg(): Argument #1 ($pattern) must not be empty
NULL