hatealleverything

const prefixes = ['Inscribed', 'Autographed', 'Exalted', 'Corrupted'];
const prefixExpression = new RegExp(`^(${prefixes.join('|')})`, 'gi');

const items = [
  { name: 'Corrupted Demon Eater', price: '3215.00', inStock: 1 },
  { name: 'Exalted Demon Eater', price: '1530.00', inStock: 1 },
  { name: 'Demon Eater', price: '2900.00', inStock: 1 },

  { name: 'Whalehook', price: '1000.00', inStock: 1 },
  { name: 'Whalehook', price: '590.00', inStock: 1 },
  { name: 'Whalehook', price: '259.20', inStock: 1 },
  { name: 'Whalehook', price: '259.15', inStock: 1 },
  { name: 'Autographed Whalehook', price: '243.00', inStock: 1 },
  { name: 'Autographed Whalehook', price: '344.00', inStock: 1 },
  { name: 'Autographed Whalehook', price: '199.00', inStock: 1 },
  { name: 'Inscribed Whalehook', price: '355.00', inStock: 1 },
  { name: 'Inscribed Whalehook', price: '655.00', inStock: 1 },
  { name: 'Inscribed Whalehook', price: '5555.00', inStock: 1 },

  { name: 'Inscribed Sylvan Cascade', price: '345.00', inStock: 1 },
  { name: 'Inscribed Sylvan Cascade', price: '96.18', inStock: 1 },
  { name: 'Inscribed Sylvan Cascade', price: '95.00', inStock: 1 },
  { name: 'Inscribed Sylvan Cascade', price: '266.71', inStock: 1 },
  { name: 'Inscribed Sylvan Cascade', price: '85.00', inStock: 1 }
];

const getCheapest = items => {
  const store = items.reduce((accumulator, item) => {
    const type = item.name.replace(prefixExpression, '').trim();
    if (!accumulator.has(type)) {
      accumulator.set(type, []);
    }
    accumulator.get(type).push(item);
    
    return accumulator;
  }, new Map());
  const cheapest = store.values().reduce((accumulator, items) => {
    const minPrice = Math.min(...items.map(item => parseFloat(item.price)));
    const item = items.find(item => parseFloat(item.price) === minPrice);
    accumulator.push(item);
    
    return accumulator;
  }, []);
  
  return cheapest;
};

getCheapest(items);
/*
[
  { name: 'Exalted Demon Eater', price: '1530.00', inStock: 1 },
  { name: 'Autographed Whalehook', price: '199.00', inStock: 1 },
  { name: 'Inscribed Sylvan Cascade', price: '85.00', inStock: 1 }
]
*/

inventory = {
                "Gift-1": {
                    "id": 1,
                    "title": "Подарок 1",
                    "price": 1000,
                    "amount": 12
                },
                "Gift-2": {
                    "id": 2,
                    "title": "Подарок 2",
                    "price": 2000,
                    "amount": 1
                },
                "Gift-6": {
                    "id": 6,
                    "title": "Подарок 6",
                    "price": 6000,
                    "amount": 3
                }
            }

for(let key in inventory) {
  inventory[key].description = 'Название предмета ' + inventory[key].title + '\n' 
     + 'Количество предметов ' + inventory[key].amount
}

console.log(inventory)

$data['img'] = "data:image/jpeg;base64," . base64_encode($data['img']);