Just PHP FUN 042.

about_alcohol.php

<?php
# https://www.codewars.com/kata/58cd9292bd0fd35781000186 Very Basic Inheritance.
class Beer extends Poison {
  public function observe(){
    return "Has foam.";
  }
  public function drink(){
    return "Beer is not very good choise for daily drinking.";
  }
}
class Wine extends Poison{
  public function observe(){
    return "Do has foam?";
  }
  public function drink(){
    return "Baam.";
  }
}

arguments.php

<?php
# https://www.codewars.com/kata/57d0fad6eca26073c3000023 PHP Functions - Default Arguments.
function multiply_with_defaults($a=1,$b=1){
  return $a*$b;
}

function circle_area($r = 1){
  $pi = 3.1415926535898;
  return $pi * ($r**2);
}

function prank_replace($a, $b = 'hello', $c = 'goodbye'){
  return str_replace($b,$c,$a);
}

arith.php

<?php
# https://www.codewars.com/kata/592eaf848c91f248ca000012 Adding words - Part I.
class Arith { 
  public $count = 
    'zero – one 2 – two 3 – three 4 – four 5 – five 6 – six 7 – seven 8 – eight
9 – nine
10 – ten
11 – eleven
12 – twelve
13 – thirteen
14 – fourteen
15 – fifteen
16 – sixteen
17 – seventeen
18 – eighteen
19 – nineteen
20 – twenty';
  function __construct($x) {
      $a = str_replace("\n"," ",$this->count);
      $a = array_values(array_filter(explode(" ",$a),function($x){return preg_match('/[a-z]+/',$x);}));
      $this->count = $a;
      $this->wrds = array_flip($a);
      $this->lft = $x;
      
        
    }
  function add($x){
      return $this->count[$this->wrds[$this->lft] + $this->wrds[$x]];
  }

    
}

heron.php

<?php
# https://www.codewars.com/kata/57aa218e72292d98d500240f Heron's formula.
function heron($a, $b, $c)
{
  $s = round(($a+$b+$c)/2,12);
  $x = round(sqrt($s*($s-$a)*($s-$b)*($s-$c)),12);
  echo "($a,$b,$c) => $s $x \n";
  return $x;
}

just_php_fun_042.md

Just PHP FUN 042.

• https://www.codewars.com/kata/58cd9292bd0fd35781000186 Very Basic Inheritance.
• https://www.codewars.com/kata/57d0fad6eca26073c3000023 PHP Functions - Default Arguments.
• https://www.codewars.com/kata/57aa218e72292d98d500240f Heron's formula.
• https://www.codewars.com/kata/592eaf848c91f248ca000012 Adding words - Part I.
• https://www.codewars.com/kata/59ad7d2e07157af687000070 Pull your words together, man!

Started at 06.07.2020 22:12.
Finised at 06.07.2020 23:26. (1hr 14minutes)

sentencify.php

<?php
# https://www.codewars.com/kata/59ad7d2e07157af687000070 Pull your words together, man!
function sentencify($words){
  return ucfirst(implode(" ", $words)).".";
}