<?php

// Make this work (without using any built-in functions, only a for loop, return the next binary number in a string or as an array).

// next_binary_number([1,0]) // [1,1]

// possible test cases:
// [1,0] => [1,1]
// [1,1] => [1,0,0]
// [1,1,0] => [1,1,1]
// .......
// [1,0,0,0,0,0,0,0,0,1] => [1,0,0,0,0,0,0,0,1,0]

// Your solution:

// if we type in our console your function and next_binary_number([1,0,0,0,0,0,0,0,0,1]) then the result should look like 1,0,0,0,0,0,0,0,1,0 (or as an array).


function nextGreater($num) {

    $l = strlen($num);

    for ($i = $l - 1; $i >= 0; $i--)
    {
        if ($num[$i] == '0')
        {
            $num[$i] = '1';
            break;
        }

        else
            $num[$i] = '0';
    }

    if ($i < 0)
        $num = "1" . $num;

    return $num;
}

?>

<?php

// Task 2:
//
// Make this work (no vowels, lowercase except the first letter):
//
// reformat("TyPEqaSt DeveLoper TeST") //Typqst dvlpr tst
//
// Your solution:
//
// if we type in our CLI your function and reformat("TyPEqaSr DeveLoper TeST") then the result should be Typqst dvlpr tst

function reformat(string $sentance) {

    $vowels = ["a", "e", "i", "o", "u", "A", "E", "I", "O", "U"];

    $result = str_replace($vowels, "", ucfirst(strtolower($sentance)));

    return $result;
}

?>