PHP array runs function and pass variable to it

Question

I am coding a bot for a game and I am now coding the handlers I want to call my array so it runs the function.

$handlers = array(
    "x" => function()
);

function function($m)
{
    echo "Var: " . $m . "\n";
}

When I call handlers I tried it like this:

$handlers("x");

So how can I pass the variable to the function.

call_user_func($handlers['x'], $argument1, $argument2, ...) or call_user_func_array($handlers['x'], $argumentsArray) — Mark Baker
– Mark Baker, Commented May 10, 2015 at 14:24

someOne · Accepted Answer · 2015-05-10 14:32:16Z

3

What you need is the call_user_func function. Besides, in your $handlers array, the name of the function must be in quotation marks and you can not use the reserved keyword function as the name of the function! and you may access the array element using [] operator:

$handlers = array(
    "x" => '_function'
);

function _function($m)
{
    echo "Var: " . $m . "\n";
}

call_user_func($handlers['x'], "hello :)");

answered May 10, 2015 at 14:32

someOne

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7 Comments

54.224.239.54 Over a year ago

Thanks :), One more question how would I add to the array. array_push($handlers, 'y' => 'yFunction'); ?

someOne Over a year ago

@54.224.239.54 Your welcome :), To add to the array you may use $handlers['y']='yFunction';

54.224.239.54 Over a year ago

Would this differ if it's in a class?

54.224.239.54 Over a year ago

call_user_func() expects parameter 1 to be a valid callback, function 'joinRoom' not found or invalid function name :(

someOne Over a year ago

@54.224.239.54 For the case in which you have a method in a class then you may use call_user_func(array($classname, 'methodName'));.

|

AbraCadaver · Accepted Answer · 2015-05-10 14:55:16Z

0

For completeness, you can do it this way as well:

$handlers = array(
    "x" => 'test'
);

function test($m) {
    echo "Var: " . $m . "\n";
}

$handlers['x']("testing...");

edited May 10, 2015 at 14:55

answered May 10, 2015 at 14:52

AbraCadaver

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2 Comments

54.224.239.54 Over a year ago

By the way how would I add to the array. array_push($handlers, 'y' => 'yFunction'); ?

AbraCadaver Over a year ago

$handlers['y'] = 'whatever';

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