Just PHP FUN 041.

band_name_generator.php

<?php
# https://www.codewars.com/kata/59727ff285281a44e3000011 Band name generator.
function band_name_generator(string $s): string {
  $s = strtolower($s);
  if($s[0] == $s[strlen($s)-1]) return substr(ucfirst($s),0,strlen($s)-1).$s;
  return "The ".ucfirst($s);
}

calc.php

<?php
# https://www.codewars.com/kata/57f75cc397d62fc93d000059 Char Code Calculation.
function calc($s) {
  $x = str2str($s);
  $y = str_replace(7,1,$x);
  return array_sum(str_split($x)) - array_sum(str_split($y));
}
function str2str($s){
  return implode(array_map(function($x){ return ord($x);},str_split($s)));
}

cartesianNeighbor.php

<?php
# https://www.codewars.com/kata/58989a079c70093f3e00008d Cartesian neighbors.
function cartesianNeighbor($x, $y){ 
  $ans = [];
  for($i = -1; $i <= 1; $i += 1)
  for($j = -1; $j <= 1; $j += 1)
  if($i != 0 || $j != 0)
      array_push($ans,[$x+$i,$y+$j]);
    
  return $ans;
}

danspower.php

<?php
# https://www.codewars.com/kata/582c42e0f000e54a7d000086 Dan's great power generator 
function danspower(int $num, int $power): int {
  $x = $num ** $power;
  if(1 == $x%2) return (int) round($x/10) * 10;
  return $x;
}

just_php_fun_041.md

Just JUST PHP 041.

• https://www.codewars.com/kata/59727ff285281a44e3000011 Band name generator.
• https://www.codewars.com/kata/57f75cc397d62fc93d000059 Char Code Calculation.
• https://www.codewars.com/kata/58989a079c70093f3e00008d Cartesian neighbors.
• https://www.codewars.com/kata/57873ab5e55533a2890000c7 Correct the time-string.
• https://www.codewars.com/kata/582c42e0f000e54a7d000086 Dan's great power generator.

Started at 21:31 04.07.2020 Saturday July.
Finished at 23:31 04.07.2020 Saturday July. (2hrs 0minutes)

timeCorrect.php

<?php
# https://www.codewars.com/kata/57873ab5e55533a2890000c7 Correct the time-string.
function timeCorrect($timestring) {
    if(empty($timestring)) return $timestring;
    if(!preg_match('/^\d{2}:\d{2}:\d{2}$/',$timestring)) return null;
    $max = 60*60*24; list($hrs,$mnt,$sec) = explode(":",$timestring);
    $total = (60 * 60* (int)$hrs + 60 * (int)$mnt + (int) $sec)%$max;
    $hrs = (int) floor($total/(60*60));
    $mnt = (int) floor(($total - $hrs*60*60)/60);
    $sec =  $total - $hrs*60*60 - $mnt*60;
    return sprintf('%02d:%02d:%02d',$hrs,$mnt,$sec);
}