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<?php
namespace Logikos\Util;
class Pair {
private $key;
private $value;
public function __construct($key, $value) {
$this->key = $this->getScalar($key);
$this->value = $value;
}
public function getKey() {
return $this->key;
public function getValue() {
return $this->value;
private function getScalar($key) {
$this->validateNotNull($key);
$this->validateNotObjectOrHasToString($key);
if (is_numeric($key) || is_string($key))
return $key;
return (string) $key;
/**
* @param $key
* @throws InvalidTypeException
*/
private function validateNotNull($key) {
if (is_null($key))
throw new InvalidTypeException('Can not use null for a key');
private function validateNotObjectOrHasToString($key) {
if (is_object($key) && !method_exists($key, '__toString'))
throw new InvalidTypeException('Object keys must implement __toString');
logikostech /
util
