convert Closure object to array

Question

I have the following PHP code:

function test($callback) {
    $parameter = func_get_args()[0]["parameter"]; 
    var_dump$parameter);
}

test(function($var, $var2) {});

The call generates this error:

Fatal error: Cannot use object of type Closure as array

How I can covert the Closure Object to an Array?

I've tried the following things:

function test($callback) {
    $parameter = func_get_args()[0];
    $parameter = json_decode(json_encode($parameter), true);
    var_dump($parameter);
}

which outputs:

array(0) {}

and:

function test($callback) {
    $parameter = func_get_args()[0];
    $parameter = (array) $parameter;
    var_dump($parameter);
}

which outputs:

array(1) { 
    [0]=> object(Closure)#1 (1) { 
        ["parameter"]=> array(2) { 
             ["$var"]=> string(10) "" 
             ["$var2"]=> string(10) "" 
        } 
    } 
}

What can I do?

sh1da9440 · Accepted Answer · 2016-10-31 17:04:05Z

2

Do you want to get an array with parameters of a callback? If you do, you can use Reflection API.

function test() {
    $callback = func_get_args()[0];
    $rf = new ReflectionFunction($callback);
    $params = array();
    foreach ($rf->getParameters() as $param) {
        $params[] = $param->getName();
    }
    var_dump($params);
}

edited Oct 31, 2016 at 17:04

answered Oct 30, 2016 at 22:06

sh1da9440

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