Just PHP FUN 034.

function battle.php

<?php
# https://www.codewars.com/kata/595519279be6c575b5000016 Battle of the characters (Easy).
function battle($x, $y) {
  $tmp = weight($x) - weight($y);
  return 0 == $tmp ? "Tie!" : ($tmp > 0 ? $x : $y);
}
function weight($x){
  $sum = 0;
  foreach(count_chars($x,1) as $k=>$v) $sum += ($k - ord('A') + 1) * $v;
  return $sum;
}

# ----------------------------------------------------------------------------------------------

/**
If do not delete ord('A') from a character code, it is literally multiplication of the ord('A'),
Rest of a char code is too small for consideration.
*/
function battle($x, $y) {
  $tmp = weight($x) - weight($y);
  return 0 == $tmp ? "Tie!" : ($tmp > 0 ? $x : $y);
}
function weight($x){
  $sum = 0; $sum1 = 0;
  var_dump(count_chars($x,1));
  foreach(count_chars($x,1) as $k=>$v) $sum += ($k - ord('A') + 1) * $v;
  foreach(count_chars($x,1) as $k=>$v) $sum1 += ($k) * $v;
  echo "$x $sum $sum1 \n";
  return $sum;
}

hamming_distance.php

<?php
# https://www.codewars.com/kata/5624e574ec6034c3a20000e6 Hamming Distance - Part 1: Binary codes.
function hamming_distance(string $r, string $s): int {
  return array_sum(array_map(function($x,$y){ return (int)$x ^ (int)$y;},str_split($r),str_split($s)));
}

just_php_fun_034.md

Just PHP FUN 034.

• https://www.codewars.com/kata/5624e574ec6034c3a20000e6 Hamming Distance - Part 1: Binary codes.
• https://www.codewars.com/kata/57cc981a58da9e302a000214 Small enough? - Beginner.
• https://www.codewars.com/kata/595519279be6c575b5000016 Battle of the characters (Easy).
• https://www.codewars.com/kata/58844a13aa037ff143000072 Simple Fun #7: Will You?
• https://www.codewars.com/kata/5648b12ce68d9daa6b000099 Number of People in the Bus.

Started at 26.06.2020 at 21:05 Friday June.
Finished at 26.06.2020 at 22:48 Friday June. (1hr 45minutes)

number.php

<?php
# https://www.codewars.com/kata/5648b12ce68d9daa6b000099 Number of People in the Bus.
function number($bus_stops) {
 return array_reduce($bus_stops,function($acc,$x){ return $acc + $x[0] - $x[1]; },0);
}

smallEnough.php

<?php
# https://www.codewars.com/kata/57cc981a58da9e302a000214 Small enough? - Beginner.
function smallEnough($a, $limit)
{
  return count($a) == count(array_filter($a,function($x) use ($limit){ return $x <= $limit;}));
}

will_you.php

<?php
# https://www.codewars.com/kata/58844a13aa037ff143000072 Simple Fun #7: Will You?
function will_you(bool $y, bool $b, bool $l): bool {
  return ($y && $b && !$l) || ($l && (!$b || !$y));
}