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PHP: Traversing strings

You can use loops to process strings as well as numbers. Mainly as a way to retrieve a specific character by its index. Below is some sample code that prints the letters of each word on a different line:


function printNameBySymbol($name)
    $i = 0;
    // This check will be performed until the end of the string
    // including the last character. Its index is `line length - 1`.
    while ($i < strlen($name)) {
        // Getting a character by its index
        $i = $i + 1;

$name = 'Arya';
// => 'A'
// => 'r'
// => 'y'
// => 'a'

The main thing in this code is to set the right condition in while. This can be done in two ways: $i < strlen($name) or $i <= strlen($name) - 1. Both lead to the same result.


Write a function, printReversedWordBySymbol(), which takes a word as input and prints it by character, just as in the example we gave, but does it in reverse order.


$word = 'Hexlet';

// => 't'
// => 'e'
// => 'l'
// => 'x'
// => 'e'
// => 'H'
The exercise doesn't pass checking. What to do? 😶

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In my environment the code works, but not here 🤨

Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.

My code is different from the teacher's one 🤔

It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.

In some rare cases, the solution may be adjusted to the tests, but this can be seen immediately.

I've read the lessons but nothing is clear 🙄

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