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@ 2024-01-15T08:31:58Z

<?php

class MyMorse
{
    private array $morseCodeByPlainTexts = [
        'A' => '.-',
        'H' => '....',
        'L' => '.-..',
        'N' => '-.',
        'O' => '---',
        'P' => '.--.',
        'S' => '...',
        'T' => '-',
        'U' => '..-',
        'Y' => '-.--',
    ];

    public function encode(string $plainTexts): string
    {
        // prepend all letters except first with a space, add two spaces for every space in the input string
        return preg_replace_callback(
                   pattern: '/(^)?(\S)| /',
                   callback: fn($m) => ctype_space($m[0])
                       ? '  '
                       : ($m[1] ?? ' ') . $this->morseCodeByPlainTexts[$m[2]],
                   subject: $plainTexts,
                   flags: PREG_UNMATCHED_AS_NULL
               );
    }
}

$obj = new MyMorse();
var_export(
    $obj->encode('YOU SHALL NOT PASS')
);

Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.4.16, 8.5.0 - 8.5.1: '-.-- --- ..- ... .... .- .-.. .-.. -. --- - .--. .- ... ...'
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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