CODEWITHSUNDEEP
phpcakephp
Richard
Richard

Reputation: 357

Php sub-methods

I've used php enough to be quite comfortable with it, but recently I've been looking through some MVC frameworks to try and understand how they work, and I've come across a syntax and data structure which I haven't encountered before:

function view($id)   
   {   
       $this->Note->id = $id;   
   }

What is the ->id section of this code? Is this a sub-method based off it's parent method? If so, how do I go about writing code to create such a structure? (ie. creating the structure from scratch, not using an existing framework like the above example from cakephp).

Upvotes: 5

Views: 810

Answers (3)

mario
mario

Reputation: 145512

Another way to think about the construct is considering

 $this->Note->id = $id;

similar to

 $this["Note"]["id"] = $id;

Which would actually be equivalent if both objects ($this and subobject Note) were based on ArrayAccess.

Upvotes: 1

Jon Nalley
Jon Nalley

Reputation: 511

The following code demonstrates how one could arrive at the structure you described.

<?php

class Note
{
    public $id = 42;
}

class MyClass
{
    public function __construct() {
        // instance of 'Note' as a property of 'MyClass'
        $this->Note = new Note();
    }

    public function test() {
        printf("The \$id property in our instance of 'Note' is: %d\n",
            $this->Note->id);
    }
}

$mc = new MyClass();
$mc->test();
?>

Upvotes: 3

rik
rik

Reputation: 8622

Note is a property of $this and it's (current) value is an object with a property named id which gets assigned the value of $id.
If id was a method of the Note object, the line would read $this->Note->id($id);.

Upvotes: 2

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