git init

app/Models/Perceptron.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+abstract class Perceptron extends Model
+{
+    public function __construct(
+        private array $synaptic_weights,
+    ) {
+        $this->synaptic_weights = $synaptic_weights; // Add bias weight
+    }
+
+    public function test(array $inputs): int
+    {
+        $inputs = array_merge([1], $inputs); // Add bias input
+
+        if (count($inputs) !== count($this->synaptic_weights)) { // Check
+            throw new \InvalidArgumentException("Number of inputs must match number of synaptic weights.");
+        }
+
+        $weighted_sum = array_sum(array_map(fn($input, $weight) => $input * $weight, $inputs, $this->synaptic_weights));
+        return $this->activationFunction($weighted_sum);
+    }
+
+    abstract protected function activationFunction(float $weighted_sum): int;
+
+    public function getSynapticWeights(): array
+    {
+        return $this->synaptic_weights;
+    }
+
+    public function setSynapticWeights(array $synaptic_weights): void
+    {
+        $this->synaptic_weights = $synaptic_weights;
+    }
+}

app/Models/SimplePerceptron.php

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+<?php
+
+namespace App\Models;
+
+class SimplePerceptron extends Perceptron {
+
+    public function __construct(
+        array $synaptic_weights,
+    ) {
+        parent::__construct($synaptic_weights);
+    }
+
+    protected function activationFunction(float $weighted_sum): int
+    {
+        return $weighted_sum >= 0 ? 1 : 0;
+    }
+
+}