Online PHP editor | perf for ot8A5h

@ 2023-04-21T13:25:31Z

<?php

class Cart 
{
    protected array $cart = [];
    protected array $fees = [];
    
    public function __construct()
    {
        // generate test Cart
        $testProducts = [
            ['id' => 1 , 'nb' => 22, 'price' => 23],
            ['id' => 383 , 'nb' => 38, 'price' => 19],
            ['id' => 412, 'nb' => 11, 'price' => 34],
        ];
        foreach ($testProducts as $testProduct) {
            while ($testProduct['nb']-- > 0) {
                $this->addProduct($testProduct['id'], $testProduct['price']);
            }
        }
    }
    
    public function cart_contents(): array
    {
        return $this->cart;
    }
    
    public function addProduct(int $id, int $price)
    {
        $this->cart[] = ['product_id' => $id, 'price' => $price];
    }
    
    public function add_fee(string $txt, float $price)
    {
        $this->fees[] = ['txt' => $txt, 'price' => $price];
    }
    
    function apply_discount_for_quantity()
    {
            // For sample, I let you choose of to define the rules and send it here
            $discount_rules = [
                ['eligible_product_ids' => [383, 411], 'required_count' => 12, 'discount_percent' => 4],
                ['eligible_product_ids' => [412], 'required_count' => 10, 'discount_percent' => 5],
            ];
            
            // Will use counter per lligible product
            $discounts_counter_cache = [];
            
            // cycle through the products in the cart to count thecantidad de productos elegibles
            foreach ($this->cart_contents() as $product) {
                
                foreach ($discount_rules as $rule) {
                    // if product is eligible to one of our discount rule
                    if (!in_array($product['product_id'], $rule['eligible_product_ids'])) {
                        // product not eligible for a discount
                        continue;
                    }

                    // let's count of many product whe got 
                    $discounts_counter_cache[ $product['product_id'] ] = ($discounts_counter_cache[ $product['product_id'] ] ?? 0) + 1;

                    // Apply per elligible product only when it's reach the limit
                    if ($discounts_counter_cache[ $product['product_id'] ] == $rule['required_count']) {
                        echo sprintf(' -- Found discount of %d%% to apply on the batch of %d product (id %d) in the cart' . PHP_EOL,
                            $rule['discount_percent'],
                            $rule['required_count'],
                            $product['product_id']
                        );
                        // We trigger the discount 
                        $this->add_fee(
                            'Descuento por cantidad: ' . $rule['discount_percent'] .'% por '. $rule['required_count'] .'x'. $product['product_id'],
                            // You can also set the value in the rule 
                            -($product['price'] * $rule['required_count'] * ($rule['discount_percent'] / 100))
                        );
                        
                        // Reset counter
                        $discounts_counter_cache[ $product['product_id'] ] = 0;
                    }
                    
                }
            }
            
        }
    
    public function show_cart()
    {
        
        $products = [];
        foreach ($this->cart as $entry) {
            if (!isset($products[$entry['product_id']])) {
                $products[$entry['product_id']] = [
                    'id' => $entry['product_id'],
                    'nb' => 0,
                    'price' => $entry['price'],
                    'total' => $entry['price'],
                ];
            }
            $products[$entry['product_id']]['nb']++;
            $products[$entry['product_id']]['price'] += $entry['price'];
        }
        echo 'Cart:'. PHP_EOL;
        foreach ($products as $product) {
            echo sprintf(
                '> Product Id:"%d" - %d$ x %d = %d$'.PHP_EOL,
                $product['id'],
                $product['price'],
                $product['nb'],
                $product['total']
            );
           
        }
        echo PHP_EOL;
        if (!empty($this->fees)) {
            echo 'Fees:'.PHP_EOL;
            $totalFees = ['nb' => 0, 'total' => 0];
            foreach ($this->fees as $fee) {
                $totalFees['nb']++;
                $totalFees['total']+= $fee['price'];
                echo sprintf(
                 '> %d$ - %s' . PHP_EOL,
                 $fee['price'],
                 $fee['txt']
                );
            }
            echo sprintf(
                 '>> Total of %d discounts for %d$' . PHP_EOL,
                 $totalFees['nb'],
                 $totalFees['total']
                );
        }
        
    }
            
}
        
        
 $cart = new Cart();
 echo 'Before discount:'.PHP_EOL;
 echo $cart->show_cart();
 $cart->apply_discount_for_quantity();
 echo PHP_EOL.'After discount:'.PHP_EOL;
 echo $cart->show_cart();

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

Version	System time (s)	User time (s)	Memory (MiB)
8.5.1	0.005	0.003	21.94
8.5.0	0.013	0.009	20.02
8.4.16	0.011	0.012	23.96
8.4.15	0.002	0.000	14.05
8.4.14	0.011	0.011	17.55
8.4.13	0.013	0.008	17.72
8.4.12	0.005	0.004	20.49
8.4.11	0.005	0.005	22.61
8.4.10	0.012	0.009	17.71
8.4.9	0.012	0.009	20.59
8.4.8	0.011	0.008	17.73
8.4.7	0.010	0.011	17.84
8.4.6	0.004	0.004	18.90
8.4.5	0.010	0.012	17.89
8.4.4	0.013	0.005	19.34
8.4.3	0.010	0.010	18.92
8.4.2	0.016	0.006	17.77
8.4.1	0.006	0.003	24.14
8.3.28	0.014	0.009	20.19
8.3.27	0.011	0.008	16.52
8.3.26	0.009	0.008	16.59
8.3.25	0.010	0.010	18.96
8.3.24	0.010	0.009	16.81
8.3.23	0.011	0.009	16.76
8.3.22	0.014	0.006	17.25
8.3.21	0.008	0.012	18.46
8.3.20	0.005	0.004	16.44
8.3.19	0.008	0.008	17.34
8.3.18	0.009	0.008	16.76
8.3.17	0.003	0.006	18.91
8.3.16	0.010	0.010	16.62
8.3.15	0.010	0.007	18.92
8.3.14	0.011	0.008	17.37
8.3.13	0.004	0.004	18.38
8.3.12	0.013	0.006	18.96
8.3.11	0.000	0.010	20.94
8.3.10	0.013	0.006	17.03
8.3.9	0.004	0.004	26.77
8.3.8	0.006	0.003	19.36
8.3.7	0.006	0.016	16.75
8.3.6	0.015	0.000	18.56
8.3.5	0.011	0.007	18.35
8.3.4	0.007	0.007	19.94
8.3.3	0.014	0.004	18.48
8.3.2	0.005	0.003	24.18
8.3.1	0.006	0.003	24.66
8.3.0	0.005	0.003	26.16
8.2.29	0.011	0.008	20.65
8.2.28	0.004	0.005	18.75
8.2.27	0.007	0.011	17.26
8.2.26	0.006	0.003	18.91
8.2.25	0.008	0.000	18.39
8.2.24	0.012	0.006	17.33
8.2.23	0.006	0.003	22.58
8.2.22	0.006	0.003	24.06
8.2.21	0.004	0.004	26.77
8.2.20	0.008	0.004	18.88
8.2.19	0.016	0.003	16.63
8.2.18	0.012	0.009	16.75
8.2.17	0.006	0.010	18.95
8.2.16	0.011	0.003	22.96
8.2.15	0.008	0.000	25.66
8.2.14	0.005	0.003	24.66
8.2.13	0.004	0.004	26.16
8.2.12	0.003	0.006	20.80
8.2.11	0.003	0.006	19.17
8.2.10	0.004	0.008	18.05
8.2.9	0.005	0.003	17.88
8.2.8	0.004	0.004	18.73
8.2.7	0.005	0.003	17.75
8.2.6	0.003	0.005	17.63
8.2.5	0.019	0.000	19.49
8.2.4	0.014	0.005	19.49
8.2.3	0.010	0.007	19.49
8.2.2	0.012	0.006	19.49
8.2.1	0.007	0.007	19.49
8.2.0	0.010	0.006	19.49
8.1.33	0.009	0.010	22.22
8.1.32	0.010	0.010	16.06
8.1.31	0.007	0.007	16.89
8.1.30	0.010	0.000	18.41
8.1.29	0.006	0.003	30.84
8.1.28	0.009	0.009	25.92
8.1.27	0.008	0.000	24.66
8.1.26	0.005	0.003	26.35
8.1.25	0.000	0.007	28.09
8.1.24	0.006	0.003	22.74
8.1.23	0.009	0.003	17.79
8.1.22	0.000	0.008	17.79
8.1.21	0.005	0.003	18.77
8.1.20	0.004	0.004	17.61
8.1.19	0.005	0.003	17.25
8.1.18	0.018	0.000	19.49
8.1.17	0.008	0.009	19.49
8.1.16	0.007	0.007	19.49
8.1.15	0.012	0.006	19.49
8.1.14	0.009	0.009	19.49
8.1.13	0.007	0.007	19.49
8.1.12	0.016	0.000	19.49
8.1.11	0.012	0.005	19.49
8.1.10	0.005	0.010	19.49
8.1.9	0.010	0.007	19.49
8.1.8	0.012	0.004	19.49
8.1.7	0.007	0.011	19.49
8.1.6	0.014	0.000	19.49
8.1.5	0.012	0.004	19.49
8.1.4	0.006	0.009	19.49
8.1.3	0.013	0.005	19.49
8.1.2	0.013	0.004	19.49
8.1.1	0.008	0.008	19.49
8.1.0	0.011	0.008	19.49
8.0.30	0.004	0.004	18.77
8.0.29	0.000	0.008	16.88
8.0.28	0.012	0.003	19.49
8.0.27	0.006	0.006	19.49
8.0.26	0.006	0.006	19.49
8.0.25	0.000	0.012	19.49
8.0.24	0.008	0.008	19.49
8.0.23	0.013	0.000	19.49
8.0.22	0.007	0.005	19.49
8.0.21	0.011	0.003	19.49
8.0.20	0.008	0.008	19.49
8.0.19	0.014	0.002	19.49
8.0.18	0.010	0.005	19.49
8.0.17	0.011	0.005	19.49
8.0.16	0.015	0.000	19.49
8.0.15	0.008	0.006	19.49
8.0.14	0.013	0.003	19.49
8.0.13	0.015	0.000	19.49
8.0.12	0.007	0.005	19.49
8.0.11	0.008	0.004	19.49
8.0.10	0.008	0.008	19.49
8.0.9	0.009	0.005	19.49
8.0.8	0.004	0.009	19.49
8.0.7	0.010	0.005	19.49
8.0.6	0.006	0.006	19.49
8.0.5	0.007	0.007	19.49
8.0.3	0.011	0.003	19.49
8.0.2	0.008	0.005	19.49
8.0.1	0.017	0.000	19.49
5.6.30	0.015	0.008	16.18

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