<?php
  /* ass_array.php by detour@metalshell.com
   *
   * Example on using associative arrays.
   *
   * http://www.metalshell.com/
   *
   */


/** Assigning Values **/

// One at a time.
$ass_array["black"] = "white";
$ass_array["up"] = "down";

// Multiple using array()
$ass_array = array("black" => "white", "up" => "down", "left" => "right", "night" => "day");



/** Displaying the Values **/
echo('<H2>Display values individually</H2>');
echo($ass_array["black"] . ', ' . $ass_array["up"] . '<br><br>');

echo('<H2>Display all values.</H2>');
foreach($ass_array as $key => $value)
  echo($key . ' = ' . $value . '<br>');



/* You can also sort the array by either the key or value.
 *
 * asort() - sort in ascending order
 * arsort() = sort in descending order
 * ksort() = sort by the key in ascending order
 *
 */

asort($ass_array);



// You can also cycle through the array by using a pointer

// Use reset() to set the pointer at the beginning of the array
reset($ass_array);

$num = count($ass_array);
echo('<H2>Display all values using a pointer. Note they are sorted now.</H2>');
for($x = 0; $x < $num; $x++) {
  echo(key($ass_array) . ' = ' . current($ass_array) . '<br>');
  // Increment the pointer
  next($ass_array);
}

?>