Help with Arrays :(

[jplush76]

Hey guys,
I'm trying to get a better grasp on arrays and I'm having some trouble

basically what I want to do is create and array of Canadian Postal Codes(first letter only)

<?php
$can_array = array ("A" => "NF", "B"=> "NS","C" => "PE");
?>

I'll use 3 codes as an example...

I take the incoming postal code and substring the first letter, what I want to do is if that first letter is in the array and matches the province that the user entered.... return true else if the first letter is not in the array or it doesn't equal the value return false.

I'm not sure what the best way to do this is 🙁

any help? thanks!

[tomhath]

Not entirely sure I follow, but this is what I think you want (kindergarten code, there are shorthand ways of doing this but less clear to read):

if ( isset($can_array[$first_letter] ) {
  if ( $can_array[$first_letter] == $user_entered) {
    return true;
  }
}
return false;

[RoadKingHD]

I'm not sure which value you are looking for, the array index or the value of the index?

To compare the value you could do this:

foreach ($can_array as $prefix) {
   //compare the value of $prefix
  echo $prefix."<BR>";

}

Or to get the index:

while (list($key, $value) = each($can_array)) {
   //$key is the index
   echo "KEY: ".$key.", VALUE: ".$value."<BR>";

}

There are other ways as well....look at the [MAN]array[/MAN] functions.

Remember to reset($array) if you use it again in you code.