php - create function name with variable

Question

I have some code like this

$form_names = GFFormsModel::get_forms();
foreach ($form_names as $form) {
  add_action("gform_pre_submission_".$form->id, "format_ecp_event_meta_from_gravity");

  function format_ecp_event_meta_from_gravity(){

  }
}

Since i'm using foreach loop functions get duplicated. So is there a way to make the function unique using $form->id ?

I mean i want the function names like this

function format_ecp_event_meta_from_gravity_{$form->id}(){

}

Can someone help me? Thanks

Looks like the perfect use case scenario for an anonymous function: php.net/manual/en/functions.anonymous.php — Niko
– Niko, Commented Jul 7, 2013 at 11:12
can you explane what you want to do with this functions i think it's not good to create functions on loop — Ahmed Abumostafa
– Ahmed Abumostafa, Commented Jul 7, 2013 at 11:14
@Niko But my function has very large code. CAn you explain how to use large code in anonymous function? — PrivateUser
– PrivateUser, Commented Jul 7, 2013 at 11:45
@Giri It's just the same as with normal functions. Just the first line is different. — Niko
– Niko, Commented Jul 7, 2013 at 11:52

Niko · Accepted Answer · 2013-07-07 11:49:55Z

2

Use closures:

$form_names = GFFormsModel::get_forms();
foreach ($form_names as $form) {
    $func = function() {
        ...
    };
    add_action("gform_pre_submission_".$form->id, $func);
}

edited Jul 7, 2013 at 11:49

Niko

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answered Jul 7, 2013 at 11:13

hek2mgl

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5 Comments

Niko Over a year ago

The functions probably also need to be passed into add_action() because they seem to get invoked there.

PrivateUser Over a year ago

@hek2mgl Could you explain this last line $functions ['func_name']= $func; ? what name should i replace with func_name?

hek2mgl Over a year ago

@Giri Note that your question is really vague because I don't know what add_action does. (You missed to describe that properly in your question). But without knowing more I would suggest to simply drop that last line. check my update

PrivateUser Over a year ago

add_action is a wordpress hook. Hey is it possible to change $func variable to ${'func_'.$form->id} ?

Niko Over a year ago

@Giri You should give this a try! Wordpress probably uses call_user_func_array to invoke the function and that should also work with a closure.

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