Just PHP FUN 006.

extraPerfect.php

<?php
# https://www.codewars.com/kata/5a662a02e626c54e87000123 Extra Perfect Numbers (Special Numbers Series #7).
function extraPerfect($n) {
  $answer = [];
  for($i = 1; $i <= $n; $i++){
    $tmp = decbin($i);
    if("1" == substr($tmp,0,1) && "1" == substr($tmp,-1,1)) array_push($answer,$i);
  }
  return $answer;
}

just_php_fun_006.md

Just PHP FUN 006.

• https://www.codewars.com/kata/563b662a59afc2b5120000c6 Growth of a Population.
• https://www.codewars.com/kata/5a662a02e626c54e87000123 Extra Perfect Numbers (Special Numbers Series #7).
• https://www.codewars.com/kata/51f2d1cafc9c0f745c00037d String ends with?
• https://www.codewars.com/kata/5aba780a6a176b029800041c Maximum Multiple.
• https://www.codewars.com/kata/5bd776533a7e2720c40000e5 The Poet And The Pendulum. ['array_unshift', 'array_push'][$k % 2]($pendulum, $v);

Started at 25.05.2020 Monday May 21:40.
Finished at 20.05.2020 Monday May 22:29. (0hrs 50 minutes)

maxMultiple.php

<?php
# https://www.codewars.com/kata/5aba780a6a176b029800041c Maximum Multiple.
function maxMultiple($divisor, $bound) {
  return $bound - $bound%$divisor;
}

nbYear.php

<?php
# https://www.codewars.com/kata/563b662a59afc2b5120000c6 Growth of a Population.
function nbYear($p0, $percent, $aug, $p) {
    $year = 0;
    while($p0 < $p){
      $p0 = $p0 + $p0*$percent*0.01 + $aug;
      $year += 1;
    }
    return $year;
}

pendulum.php

<?php
# https://www.codewars.com/kata/5bd776533a7e2720c40000e5 The Poet And The Pendulum.
function pendulum($values) {
  $answer = [ ]; sort($values);
  $size = count($values);
  for($i = 0; $i < $size; $i++){
    if(0 == $i%2){
      array_unshift($answer,$values[$i]);
    }else{
      array_push($answer, $values[$i]);
    }
  }
  return $answer;
}

string_ends_with.php

<?php
# https://www.codewars.com/kata/51f2d1cafc9c0f745c00037d String ends with?
function solution($str, $ending) {
  if(empty($ending))
    return true;
  return substr($str,-(strlen($ending))) == $ending;
}