SethAnderson.net

/**
* Walks through an array and looks for a specific state key. It then tries to convert the full state name to its abbreviation.
* Originally written for importing CSV data to the database where all of the rows contained full length state names. Thought it would
* be useful in other functions so added it to global. Call it like this: array_walk($arr,'state_abbr',[state_key_name]);/sa
* @uses array $states - Must have a states array formatted with abbreviations as the key.
* @param array $arr - reference to the array we are walking through
* @param string $key - current key
* @param string $array_key - state field name string we should be checking for in array
* @return void
*/
function state_abbr(&$arr,$key,$array_key){
global $states;
if(strlen($arr[$array_key])==2 && array_key_exists(strtoupper($arr[$array_key]),$states)){ return false; }; //if the value is already a abbr, don't do anything
$arr[$array_key] = array_search(ucwords(strtolower(trim($arr[$array_key]))),$states);
}
/* Don't forget your states array */
array('AL'=>'Alabama','AK'=>'Alaska');