Reversing and some editing on a messy file

reverse.php

<?php
function convert_non_persian_chars_to_persian ($str) {
  //main goal: arabic chars: from ؀ U+0600 (&#1536;) to ۿ U+06FF (&#1791;)
  //source: https://unicode-table.com/en
  $right_chars = array (
    'ا',
    'ب',
    'پ',
    'ت',
    'ث',
    'ج',
    'چ',
    'ح',
    'خ',
    'د',
    'ذ',
    'ر',
    'ز',
    'ژ',
    'س',
    'ش',
    'ص',
    'ض',
    'ط',
    'ظ',
    'ع',
    'غ',
    'ف',
    'ق',
    'ک',
    'گ',
    'ل',
    'م',
    'ن',
    'و',
    'ه',
    'ی',
    '‌', /* Zero Width Non-Joiner (nim fasele): U+200C (Unicode) or &#8204; (HTML) */
  );
  //first char of every array is right char
  $all_like_chars = array (
    $alef = array (
      'ا',
      'ݳ',
      'ݴ',
    ),
    $be = array (
      'ب',
      'ٻ',
      'ڀ',
      'ݑ',
      'ݔ',
      'ݕ',
      'ݖ',
    ),
    $pe = array (
      'پ',
      'ݐ',
      'ݒ',
      'ݓ',
    ),
    $te = array (
      'ت',
      'ٺ',
      'ټ',
      'ٽ',
      'ٿ',
    ),
    $se = array (
      'ث',
      'ٹ',
    ),
    $jim = array (
      'ج',
      'ڃ',
      'ڄ',
      'ݼ',
    ),
    $che = array (
      'چ',
      'ڇ',
      'ڿ',
      'ݘ',
      'ݮ',
      'ݯ',
    ),
    $he = array (
      'ح',
      'ځ',
      'ڂ',
      'څ',
      'ݗ',
    ),
    $khe = array (
      'خ',
      'ݲ',
    ),
    $dal = array (
      'د',
      'ڈ',
      'ډ',
      'ڊ',
      'ڋ',
      'ڌ',
      'ڍ',
      'ڎ',
      'ڏ',
      'ڐ',
      'ݙ',
      'ݚ',
      'ۮ',
    ),
    $zal = array (
      'ذ',
    ),
    $re = array (
      'ر',
      'ړ',
      'ڔ',
      'ڕ',
      'ږ',
      'ݛ',
      'ހ',
      'ۯ',
      'ڑ',
      'ڒ',
      'ݬ',
      'ݫ',
      'ڗ',
      'ڙ',
      'ݱ',
    ),
    $ze = array (
      'ز',
    ),
    $zhe = array (
      'ژ',
    ),
    $sin = array (
      'س',
      'ښ',
      'ڛ',
      'ݭ',
      'ݽ',
    ),
    $shin = array (
      'ش',
      'ݜ',
      'ڜ',
      'ݰ',
      'ݾ',
      'ۺ',
    ),
    $sad = array (
      'ص',
      'ڝ',
      'ڞ',
    ),
    $zad = array (
      'ض',
      'ۻ',
    ),
    $ta = array (
      'ط',
      'ڟ',
    ),
    $za = array (
      'ظ',
    ),
    $ain = array (
      'ع',
    ),
    $ghain = array (
      'غ',
      'ڠ',
      'ݝ',
      'ݞ',
      'ݟ',
      'ۼ',
    ),
    $fe = array (
      'ف',
      'ڡ',
      'ڢ',
      'ڣ',
      'ڤ',
      'ڥ',
      'ڦ',
      'ݠ',
      'ݡ',  
    ),
    $ghaf = array (
      'ق',
      'ٯ',
      'ڧ',
      'ڨ',
    ),
    $kaf = array (
      'ک',
      'ػ',
      'ؼ',
      'ك',
      'ڪ',
      'ګ',
      'ڬ',
      'ڭ',
      'ڮ',
      'ݢ',
      'ݣ',
      'ݤ',
      'ݿ',
    ),
    $gaf = array (
      'گ',
      'ڰ',
      'ڱ',
      'ڲ',
      'ڳ',
      'ڴ',
    ),
    $lam = array (
      'ل',
      'ڵ',
      'ڶ',
      'ڷ',
      'ڸ',
      'ݪ',
    ),
    $mim = array (
      'م',
      'ݥ',
      'ݦ',
      '۾',
    ),
    $noon = array (
      'ن',
      'ڹ',
      'ں',
      'ڻ',
      'ڼ',
      'ڽ',
      'ݧ',
      'ݨ',
      'ݩ',
    ),
    $vav = array (
      'و',
      'ٶ',
      'ٷ',
      'ۄ',
      'ۅ',
      'ۆ',
      'ۇ',
      'ۈ',
      'ۉ',
      'ۊ',
      'ۋ',
      'ۏ',
      'ݸ',
      'ݹ',
    ),
    $ha = array (
      'ه',
      'ھ',
      'ہ',
      'ۂ',
      'ۃ',
      'ە',
      'ۿ',
    ),
    $ye = array (
      'ی',
      'ؽ',
      'ؾ',
      'ؿ',
      'ي',
      'ٸ',
      'ۍ',
      'ێ',
      'ې',
      'ۑ',
      'ے',
      'ۓ',
      'ݵ',
      'ݶ',
      'ݷ',
      'ݺ',
      'ݻ',
    ),
    //32nd
    $nim_fasele = array (
      '‌', /* Zero Width Non-Joiner (nim fasele): U+200C (Unicode) or &#8204; (HTML) */
      '¬',
    ),
  );
  for ($i = 0; $i <= 32; $i++) {
    $str = str_replace ($all_like_chars[$i], $right_chars[$i], $str);
  }
  return $str;
}
function utf8_strrev($str){ 
	preg_match_all('/./us', $str, $ar); 
	return join('', array_reverse($ar[0])); 
}
function strrev_non_persian_words ($str) {
	$exploded_string = explode (" ",$str);
	foreach ($exploded_string as &$word) {
	preg_match ('/[a-zA-Z0-9]/', $word, $matches, PREG_UNMATCHED_AS_NULL);
	if ( ! empty ($matches) ) {
		$word = htmlspecialchars(strrev ($word));
		}
	}
	return implode (" ", $exploded_string);
}

function edit_str ($str) {
	return convert_non_persian_chars_to_persian(strrev_non_persian_words(utf8_strrev($str)));
}

$file = file ("file.txt");

foreach ($file as &$line) {
	$line = edit_str ($line);
	echo $line."\n\n";
}

file_put_contents("output.txt", implode("\n", $file));