PHP code to convert morse code into english text and vice versa - challenge from https://github.com/ponchog/phpcodingchallenge

MorseConverter.php

<?php
/**
 * Converts morse code into english text and vice versa
 * php version 7.2
 * 
 * @category NA
 * @package  NA
 * @author   vzxry <[email protected]>
 */
namespace MorseConverter;

class MorseConverter
{
    const MORSECODES = array(
        array('char'=>'0', 'morse'=>"-----"),
        array('char'=>'1', 'morse'=>".----"),
        array('char'=>'2', 'morse'=>"..---"),
        array('char'=>'3', 'morse'=>"...--"),
        array('char'=>'4', 'morse'=>"....-"),
        array('char'=>'5', 'morse'=>"....."),
        array('char'=>'6', 'morse'=>"-...."),
        array('char'=>'7', 'morse'=>"--..."),
        array('char'=>'8', 'morse'=>"---.."),
        array('char'=>'9', 'morse'=>"----."),
    
        array('char'=>'A', 'morse'=>".-"),
        array('char'=>'B', 'morse'=>"-..."),
        array('char'=>'C', 'morse'=>"-.-."),
        array('char'=>'D', 'morse'=>"-.."),
        array('char'=>'E', 'morse'=>"."),
        array('char'=>'F', 'morse'=>"..-."),
        array('char'=>'G', 'morse'=>"--."),
        array('char'=>'H', 'morse'=>"...."),
        array('char'=>'I', 'morse'=>".."),
        array('char'=>'J', 'morse'=>".---"),
        array('char'=>'K', 'morse'=>"-.-"),
        array('char'=>'L', 'morse'=>".-.."),
        array('char'=>'M', 'morse'=>"--"),
        array('char'=>'N', 'morse'=>"-."),
        array('char'=>'O', 'morse'=>"---"),
        array('char'=>'P', 'morse'=>".--."),
        array('char'=>'Q', 'morse'=>"--.-"),
        array('char'=>'R', 'morse'=>".-."),
        array('char'=>'S', 'morse'=>"..."),
        array('char'=>'T', 'morse'=>"-"),
        array('char'=>'U', 'morse'=>"..-"),
        array('char'=>'V', 'morse'=>"...-"),
        array('char'=>'W', 'morse'=>".--"),
        array('char'=>'X', 'morse'=>"-..-"),
        array('char'=>'Y', 'morse'=>"-.--"),
        array('char'=>'Z', 'morse'=>"--.."),
    
        array('char'=>".", 'morse'=>".-.-.-"),
        array('char'=>",", 'morse'=>"--..--"),
        array('char'=>"?", 'morse'=>"..--.."),
        array('char'=>"!", 'morse'=>"-.-.--"),
        array('char'=>"/", 'morse'=>"-..-."),
        array('char'=>"(", 'morse'=>"-.--.-"),
        array('char'=>")", 'morse'=>"-.--.-"),
        array('char'=>"&", 'morse'=>".-..."),
        array('char'=>":", 'morse'=>"---..."),
        array('char'=>";", 'morse'=>"-.-.-."),
        array('char'=>"=", 'morse'=>"-...-"),
        array('char'=>"+", 'morse'=>".-.-."),
        array('char'=>"-", 'morse'=>"-....-"),
        array('char'=>"_", 'morse'=>"..--.-"),
        array('char'=>"\"",'morse'=>".-..-."),
        array('char'=>"$", 'morse'=>"...-..-"),
        array('char'=>"@", 'morse'=>".--.-."));

    /**
     * Converts input into Morse code
     * 
     * @param $input string
     * 
     * @return string output
     */
    public static function toMorse($input)
    {
        $morse = array_column(MorseConverter::MORSECODES, 'char', 'morse');
        $result = '';

        forEach (str_split($input) as $char) {
            $morseSearch = array_search(strtoupper($char), $morse);
            if ($morseSearch) {
                $result = $result.$morseSearch.' ';
            }
            
            if ($char == ' ') {
                $result = $result.'/';
            }
        }

        return $result;
    }

    /**
     * Converts input from Morse code to English text
     * 
     * @param $input string
     * 
     * @return string output
     */
    public static function fromMorse($input)
    {
        $morse = array_column(MorseConverter::MORSECODES, 'morse', 'char');
        $result = '';
        
        forEach (explode(' ', $input) as $char) {
            if ($char != '') {
                if (substr($char[0], 0, 1) == '/') {
                    $result = $result.' ';
                    $char = substr($char, 1);
                }

                $morseSearch = array_search($char, $morse);
                if ($morseSearch) {
                    $result = $result.$morseSearch;
                }
            }
        }

        return $result;
    }
}

TODO: Comments hahaha