stoimen

<?php
function eratosthenes_sieve(&$sieve, $n) {
 $i = 2;

 while ($i <= $n) {
  if ($sieve[$i] == 0) {
   echo $i;

   $j = $i;
   while ($j <= $n) {

stoimen

<?php
  /**
   * Performs a sequential search using sentinel
   * and changes the array after the value is found
   *
   * @param array $arr
   * @param mixed $value
   */
  function sequential_search(&$arr, $value)
  {

stoimen

(function() {
  var sequential = function(haystack, needle) {
    var i = 0,
      len = haystack.length
      ;

    for (; i < len; i++) {
      if (haystack[i] === needle) {
        return true;
      }

stoimen

<?php
  // unordered list
  $arr = array(1, 2, 3, 3.14, 5, 4, 6, 9, 8);

  // searched value
  $x = 3.14;
  $length = count($arr);
  $index = null;

  for ($i = 0; $i < $length; $i++) {

stoimen

<?php
  // unordered list
  $arr = array(1, 2, 3, 3.14, 5, 4, 6, 9, 8);
  
  // searched value
  $x = 3.14;
  $index = count($arr);
  
  while ($arr[$index--] != $x);