(PHP 5, PHP 7, PHP 8)
ReflectionClass::getMethod — Gets a ReflectionMethod for a class method
Gets a ReflectionMethod for a class method.
nameThe method name to reflect.
A ReflectionException if the method does not exist.
Example #1 Basic usage of ReflectionClass::getMethod()
<?php
$class = new ReflectionClass('ReflectionClass');
$method = $class->getMethod('getMethod');
var_dump($method);
?>The above example will output:
object(ReflectionMethod)#2 (2) {
["name"]=>
string(9) "getMethod"
["class"]=>
string(15) "ReflectionClass"
}
If you ever need to get the type hint of a parameter in a method use this.
<?php
//Target our class
$reflector = new ReflectionClass('MyClass');
//Get the parameters of a method
$parameters = $reflector->getMethod('FireCannon')->getParameters();
//Loop through each parameter and get the type
foreach($parameters as $param)
{
//Before you call getClass() that class must be defined!
echo $param->getClass()->name;
}
?>Replace call_user_func_array with callMethodWithNamedArgs
In PHP, when you're using call_user_func_array to call a method with named parameters, you need to convert the associative array $params into a simple array that matches the order of the function arguments. However, PHP doesn't directly support calling functions or methods with named arguments via call_user_func_array. Instead, you can use reflection for more flexibility, allowing you to pass arguments by their parameter names.
Here's a function that does this for you:
function callMethodWithNamedArgs($className, $methodName, array $params) {
$class = new ReflectionClass($className);
$method = $class->getMethod($methodName);
// Create an array where keys are argument names and values are null initially.
$argsByPosition = array_fill_keys(array_keys($method->getParameters()), null);
// Fill the $argsByPosition array with provided values based on the keys.
foreach ($params as $key => $value) {
if ($method->hasParameter($key)) {
$argsByPosition[$method->getParameter($key)->getPosition()] = $value;
}
}
// Call the method using the ordered arguments.
return $method->invokeArgs(null, $argsByPosition);
}
// Usage example:
$params = [
'page' => 3,
'size' => '23 Mb',
'source' => 'some_site',
'status' => 'ok'
];
callMethodWithNamedArgs('SomeClass', 'someFunctionName', $params);
This function uses the Reflection API to inspect the method signature, ensuring that even if some parameters are null or missing from $params, they won't cause issues during the method call, as long as they are optional in the method definition. It positions the parameters correctly according to the method's definition order.
Make sure to replace 'SomeClass' and 'someFunctionName' with your actual class name and method name. This approach is particularly handy when dealing with methods that have many parameters, some of which might be optional and passed in any order.if you ever need to get the body of a method, use this extension (https://github.com/sagittaracc/reflection):
namespace sagittaracc\classes;
class Test
{
public function method()
{
if (true) {
return 'this method';
}
return 'never goes here';
}
}
$reflection = new ReflectionClass(Test::class);
$method = $reflection->getMethod('method');
echo $method->body; // if (true) { return 'this method'; } return 'never goes here';