Replace create_function with empty $args for PHP 8

Question

I'm having trouble rewriting this line of code that contains create_function() in preparation for updating to PHP 8+.

The line of code to replace is:

add_action('widgets_init', create_function('', 'return register_widget("Ctxt_Menu_Widget");'));

I am trying to replace it with:

$callback = function(){
    ('', 'return register_widget("Ctxt_Menu_Widget");');
}
add_action('widgets_init', $callback);

But obviously, this isn't right, the replacement code won't allow the array withing that function.

Can someone help me rewrite this? Thanks so much!

Daniele Continenza · Accepted Answer · 2023-05-03 15:40:47Z

1

The function should be a real (anonimous) function, sintactically valid in php, so it should be something like that

$callback = function(){
    return register_widget("Ctxt_Menu_Widget");
}

Then you can call this function

add_action('widgets_init', $callback);

Now wehn called, it is executed as a normal php functions

edited May 3, 2023 at 15:40

answered May 3, 2023 at 13:04

Daniele Continenza

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2 Comments

jeffimperial Over a year ago

Thanks @Daniele, but what did work for me was as follows:

add_action ( 'widgets_init', 'Ctxt_init_Menu_Widget' ); 	function Ctxt_init_Menu_Widget() { 	return register_widget('Ctxt_Menu_Widget'); }

Daniele Continenza Over a year ago

It is exactly the same. You declare a function named Ctxt_init_Menu_Widget and call inside add_action. If you "put" the function inside a variable and use that variable, you should get the same results as per your solution. But, if you solved in that way, nopro, maybe this is a framework I don't know and this kind of solution doesn't work

jeffimperial · Accepted Answer · 2023-05-03 15:26:13Z

-1

What turns out to be a good solution was:

add_action ( 'widgets_init', 'Ctxt_init_Menu_Widget' );
    function Ctxt_init_Menu_Widget() {
    return register_widget('Ctxt_Menu_Widget');
}

to replace:

add_action('widgets_init', create_function('', 'return register_widget("Ctxt_init_Menu_Widget");'));

Source: https://sarah-moyer.com/fix-create_function-deprecated-in-wordpress/

answered May 3, 2023 at 15:26

jeffimperial

733 silver badges11 bronze badges

2 Comments

Sammitch Over a year ago

create_function() would return an anonymous function that's only ever used by reference. This code creates a new named function and this code will behave oddly in anything other than the global scope.

Community Over a year ago

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

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