Sequential Search v2

sequential_search_v2.php

<?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; $i++) {
  	if ($arr[$i] == $x) {
  		$index = $i;
  		break;
  	}
  }

  if (isset($index)) {
  	return true;
  } else {
  	return false;
  }
?>