Passing argument to function in Wordpress - wordpress

Question

I have following function:
public function id_callback($idnumber){}
And I call it this way:
for($i = 1; $i <= $fieldcount; $i++)
{
add_settings_field(
'id' . $i,
'ID' . $i,
array( $this, 'id_callback' ),
'my-setting-admin',
'setting_section_id'
);
}
How can I pass $i as an argument to id_callback?
Thanks in advance.

Answer 1

Your code is a little abstract, as it does not come with a specific context, however i'll try to help you. You basically have to create a variable and a method that sets that variable. Then you should use that method to change the variable in the for loop. Here is a quick example of what i'm talking about (i've created an example class that replicates a simple use case):
<?php
class Example_Callback {
public $id_callback;
public function set_id_callback($id_callback) {
$this->id_callback = $id_callback;
}
public function do_something() {
// here is your $i:
$callback_id = $this->id_callback;
// here you can do something with your $callback_id
}
public function test() {
$fieldcount = 5; // usually this should come from somewhere
for($i = 1; $i <= $fieldcount; $i++) {
$this->set_id_callback($i);
add_settings_field(
'id' . $i,
'ID' . $i,
array( $this, 'do_something' ),
'my-setting-admin',
'setting_section_id'
);
}
}
}
$callback = new Example_Callback();
$callback->test();
?>