- var_dump: documentation ( source)
<?php
class Currency
{
public $currencyCode;
public function __construct($currencyCode)
{
$this->currencyCode = $currencyCode;
}
public function equals(Currency $currency)
{
return $this->currencyCode === $currency->currencyCode;
}
}
class Money
{
public $amount;
public $currency;
public function __construct($amount, Currency $currency = null)
{
$this->currency = $currency ?: new Currency('USD');
}
}
echo "True/Object comparison with loosy operator (should be true):\r\n";
var_dump(new Money(55) == true);
echo "True/Object comparision with strict operator (should be false):\r\n";
var_dump(new Money(55) === true);
echo "False/Null comparison with loose operator (should be true):\r\n";
var_dump(null == false);
echo "False/Null comparision with strict operator (should be false):\r\n";
var_dump(null === false);
// $currency is passed in, $currency == true
$revenue = new Money(55, new Currency('GBP'));
echo "Short-hand ternary when currency is set (should be true):\r\n";
var_dump($revenue->currency->equals(new Currency('GBP')));
// $currency is null, $currency == false
$assets = new Money(55);
echo "Short-hand ternary when currency is not set (should be true):\r\n";
var_dump($assets->currency->equals(new Currency('USD')));