Just PHP FUN 060.

compare.php

<?php
# https://www.codewars.com/kata/576bb3c4b1abc497ec000065 Compare Strings by Sum of Chars.
function compare($s1, $s2) {
  $size = function($x){
    if(!is_string($x)) return 0;
    if(preg_match('/[^a-z]/i',$x)) return 0;
    return array_sum(array_map('ord',str_split(strtoupper($x))));
    };
  return $size($s1) == $size($s2);
}

get_first_python.php

<?php
# https://www.codewars.com/kata/5827bc50f524dd029d0005f2 Coding Meetup #4 - Higher-Order Functions Series - Find the first Python developer.
function get_first_python($a) {
  $x = array_values(array_filter($a,function($x){ return "Python" == $x['language'];}));
  if(empty($x)) return "There will be no Python developers";
  return $x[0]["first_name"].", ".$x[0]["country"];
}

get_kth_last_element.php

<?php
# https://www.codewars.com/kata/5810d8ce2956d78698000032 Find the K-th last element of a singly linked list.
/*
  Predefined class for list nodes:
  
  class Node {
    public $data, $next;
    public function __construct($data, $next = NULL) {
      $this->data = $data;
      $this->next = $next;
    }
  }
*/

function get_kth_last_element($head, $k) {
  $size = 0; $tmp = $head; $i = 0;
  while($tmp){$size += 1; $tmp = $tmp->next;}
  $steps = $size - 1 - $k;
  if(0 > $steps || $steps >= $size ) return false;
  while($head && $i < $steps){ $i += 1; $head = $head->next;}
  if($head) return $head;
  throw new Exception('There is no head.');
}

isStraight.php

<?php
# https://www.codewars.com/kata/582afcadac2d9baa0900054c Pokerhand, straight or not?
// return true/false if the given cards make up a straight
function isStraight($c){
  $a = $c;
  $b = $c;
  for($i=0; $i < count($b); $i++) if(14 == $b[$i]) $b[$i] = 1;
  sort($a); sort($b); $a = array_values(array_unique($a)); $b = array_values(array_unique($b));
  return test($a) || test($b);
}
function test($x){
   for($i=0; $i < count($x); $i++) if(five(array_slice($x,$i,5))) return true;
   return false;
}
function five($x){
  if(count($x) < 5) return false;
  for($i=1; $i<5; $i++) if($x[$i-1]+1 != $x[$i]) return false;
  return true;
}
#-------------------------------------------------------------------------------------------
function isStraight($cards){
  echo "Import: ".implode(",",$cards)."\n";
  for($i = 0; $i < count($cards); $i+=1) if(14 == $cards[$i]) $cards[$i] = 1;
  sort($cards);
  echo "Sorted: ".implode(",",$cards)."\n";
  $valid = function($x){
    if(5 != count($x)) return false;
    echo "test: ".implode(",",$x)."\n";
    for($i=1; $i < 5; $i++) if($x[$i-1] + 1 != $x[$i]) return false;
    return true;
  };
  while(!empty($cards)){
    if($valid(array_slice($cards,0,5))){
      echo "REturn true\n";
      return true;}
    $cards = array_slice($cards,1);
  }
  echo "Return false\n";
  return false;
}
# ---------------------------------------------------------------------
function isStraight($cards){
  sort($cards);
  echo implode(",",$cards)."\n";
  $s = count($cards);
  for($i = 1; $i < $s ; $i++){
    for($j = $i, $cnt = 0; $j < $s; $j++, $cnt += 1) if($cards[$j-1] >= $cards[$j]) break;
    echo $cnt."\n";
    if(4 == $cnt) return true;
    
  }
  return false;
}

just_php_fun_060.md

Just PHP FUN 060.

• https://www.codewars.com/kata/5810d8ce2956d78698000032 Find the K-th last element of a singly linked list.
• https://www.codewars.com/kata/5827bc50f524dd029d0005f2 Coding Meetup #4 - Higher-Order Functions Series - Find the first Python developer.
• https://www.codewars.com/kata/57fb017d9610ce369a0006ac Exclamation marks series #9: Remove or add a exclamation mark at the end of words of the sentence.
• https://www.codewars.com/kata/576bb3c4b1abc497ec000065 Compare Strings by Sum of Chars.
• https://www.codewars.com/kata/582afcadac2d9baa0900054c Pokerhand, straight or not?

Started at 21:09 27.07.2020 Monday July.
Finished at 23:42 27.07.2020 Monday July. (23.07.2020 1:30 Tuesday) 4hrs 21 minutes.

remove.php

<?php
# https://www.codewars.com/kata/57fb017d9610ce369a0006ac Exclamation marks series #9: Remove or add a exclamation mark at the end of words of the sentence.
function remove(string $s): string {
  $x =array_map(function($x){
    if(preg_match('/!+$/',$x,$mtch)){
      if(1 == strlen($mtch[0])) return substr($x,0,strlen($x)-1);
      return $x;
    }else{
      return $x."!";
    }
  },explode(" ",$s));
  return implode(" ",$x);
}

Import: 10,7,12,11,13,4,14
Sorted: 1,4,7,10,11,12,13
test: 1,4,7,10,11
test: 4,7,10,11,12
test: 7,10,11,12,13
Return false

10, 7, 12 ,11, 13, 4, 14
Failed asserting that true matches expected false.