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<?php declare(strict_types=1); |
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namespace PerfectApp\Container; |
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use Closure; |
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use ReflectionClass; |
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use ReflectionException; |
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class Container |
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{ |
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private array $instances = []; |
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private array $bindings = []; |
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public function bind(string $abstract, mixed $concrete): void |
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{ |
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$this->bindings[$abstract] = $concrete; |
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} |
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public function get(string $className): object |
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{ |
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if (isset($this->bindings[$className])) { |
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$concrete = $this->bindings[$className]; |
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if ($concrete instanceof Closure) { |
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return $concrete($this); |
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} |
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$className = $concrete; |
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} |
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if (!isset($this->instances[$className])) { |
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try { |
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$reflectionClass = new ReflectionClass($className); |
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} catch (ReflectionException $e) { |
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error_log("Failed to create ReflectionClass for $className: {$e->getMessage()}"); |
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http_response_code(500); |
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die('Fatal Error. See Error log for details.'); |
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} |
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$constructor = $reflectionClass->getConstructor(); |
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if ($constructor) { |
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$params = $constructor->getParameters(); |
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$dependencies = []; |
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foreach ($params as $param) { |
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$type = $param->getType(); |
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if ($type && !$type->isBuiltin()) { |
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$dependency = $type->getName(); |
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$dependencies[] = $this->get($dependency); |
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} |
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} |
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try { |
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$this->instances[$className] = $reflectionClass->newInstanceArgs($dependencies); |
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} catch (ReflectionException $e) { |
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error_log("Failed to instantiate $className: {$e->getMessage()}"); |
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die('Fatal Error. See Error log for details.'); |
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} |
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} else { |
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$this->instances[$className] = new $className(); |
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} |
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} |
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return $this->instances[$className]; |
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} |
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} |
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benanamen /
perfect-container
Loading history...
For hinted functions/methods where all return statements with the correct type are only reachable via conditions, ?null? gets implicitly returned which may be incompatible with the hinted type. Let?s take a look at an example: