如何通过class（）:: function（）将参数传递给php类

Question

How pass parameter to PHP class by class()::function() ?

class greenHouse{
    public function __construct(connection $con){
    }

    public function show(){
    }

}

$nameclass = 'greenHouse';
$namefunction = 'show';
$nameclass::$namefunction();

works

$nameclass = 'greenHouse';
$namefunction = 'show';
$nameclass($con)::$namefunction();

doesn't work

I want to pass a parameter to the class with $nameclass($con)::$namefunction(); . How do I do that in PHP?

Answer 1

You are trying to call a function statically with that notation...

$nameclass = 'greenHouse';
$namefunction = 'show';
$class = new $nameclass($con);
$class->$namefunction();

Answer 2

You can instantiate an object and immediately discard it by calling new within braces:

class Test
{
    private $name;

    function __construct($name)
    {
        $this->name = $name;
    }

    function speak()
    {

        echo $this->name;
    }

    function __destruct()
    {
        echo 'dead';
    }
}
$class='Test';
$method='speak';


(new $class('David'))->$method();

echo ' is ';

$temp = new $class('John');
$temp->$method();

echo ' is ';

//Daviddead is John is dead

So in your case:

(new $nameclass($con))->$namefunction();