Automatically assign method arguments like Codeigniter

Question

In Codeigniter, parameters from the URI are automatically made available to the method being called.

For example:

/admin/edit/news/1 in the url would mean that in the admin controller, you could do the following:

function edit($table,$id)
{
    echo $table; // outputs 'news'
    echo $id; // outputs '1'
}

So, in essence you are able to name and use the arguments within the method without previously having 'passed them in' in that order anywhere, and regardless of how many there are, they are still passed to the function in the order they appear in the URI.

I guess this must have something to do with the __call() magic method, but I can't get my head around how to pass them to the method being called as though they were individual arguments and not an $args array as received by the __call() method.

How is this achieved?

php.net/manual/en/function.call-user-func-array.php

Steve
– Steve

2015-10-24 13:01:57 +00:00
Commented Oct 24, 2015 at 13:01 — Steve
– Steve, Commented Oct 24, 2015 at 13:01
Thanks Steve. If you add this as an answer, I'll accept it.

Marc
– Marc

2015-10-26 12:40:35 +00:00
Commented Oct 26, 2015 at 12:40 — Marc
– Marc, Commented Oct 26, 2015 at 12:40

malukenho · Accepted Answer · 2016-08-03 14:41:00Z

1

You can see the inteire logic around this magic on system/core/CodeIgniter.php file.

You can see how it is instantiating the class https://github.com/bcit-ci/CodeIgniter/blob/develop/system/core/CodeIgniter.php#L500

And also, I highlighted the line that is doing the job of call the method with parameters.

https://github.com/bcit-ci/CodeIgniter/blob/develop/system/core/CodeIgniter.php#L514

[]'s

answered Aug 3, 2016 at 14:41

malukenho

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