Hashes - AKA - Associative arrays

Creating Hashes

$hash = array("AL" => "Alabama", "AK" => "Alaska", ...);

Iteration:

foreach($hash AS $index => $value) {
  echo "Index:$index - Value:$value<br />"; 
}

Other hash functions:

• asort() - sorts the values of a hash
• arsort() - reverse the values of a hash
• ksort() - sorts the indexes of a hash