rtCamp notes, day 8/undefined

Started working on changing code base of PHP-XKCD assignment to Object Oriented.

Came to learn a lot of practical things.

Classes with namespaces are automatically included if the namespace is perfectly organised with the directory structure.

Function chaining

can call multiple functions one after other from a class without referencing the class object again and again
For e.g.

$obj->someFunction();
$obj->someFunction2();
$obj->someFunction3();

These can be instead written as

$obj->someFunction()
    ->someFunction2()
    ->someFunction3();

This is known as method chaining. Can be achieved by returning the class instance in the function

class obj
{
    function someFunction()
    {
        return $this;
    }
    function someFunction2()
    {
        return $this;
    }
    function someFunction3()
    {
        return $this;
    }
}

This is what i used in my PHP project

Also when we create an Object Oriented program, the initial development of the class and functions can be a bit time consuming, but at the time of implementation, it becomes so easy and faster to achieve logics.

Learned a concept of giving valuable and understanding names to things.

For e.g.

$obj->setStatus(1);

Here some other person may have difficulties in knowing what is this 1 for. So instead of this, we can achieve another thing like

class Obj
{
    public const VERIFIED = 1;
}

$obj = new Obj();
$obj->setStatus(Obj::VERIFIED);

In this way, we can remember that the status 1 is for VERIFIED

Also a point: The Cli version of PHP & the web version of PHP Works on different configuration files.

That’s pretty much how my day today went at rtCamp, looking towards more wonderful days.

Regards

–

Aryan Jasala

WordPress Engineer Trainee