self vs. this in PHP

PHP self refers to the class members, but not for any particular object. This is because the static members(variables or functions) are class members shared by all the objecxts of the class. Whereas, $this wil refer the member variables and function for a particular instance.

1. Is self the same as this?
2. What is self PHP?
3. What is the use of this in PHP?
4. How use $this in static method in PHP?
5. What is Self in OOP?
6. What is __ init __ Python?
7. What's the difference between == and === PHP?
8. Why is var self this?
9. What are the PHP operators?
10. What's so bad about PHP?
11. Are PHP files dangerous?
12. Is PHP a dead language?

Is self the same as this?

Technically both self and this are used for the same thing. They are used to access the variable associated with the current instance. Only difference is, you have to include self explicitly as first parameter to an instance method in Python, whereas this is not the case with Java.

What is self PHP?

In PHP, the self and this keyword are used to refer class members within the scope of a class. The class members can be either variables or functions. ... PHP this keyword refers a non-static member of a class with respect to the class instance created.

What is the use of this in PHP?

$this is a reserved keyword in PHP that refers to the calling object. It is usually the object to which the method belongs, but possibly another object if the method is called statically from the context of a secondary object. This keyword is only applicable to internal methods.

How use $this in static method in PHP?

You can't use $this inside a static function, because static functions are independent of any instantiated object. Try making the function not static. Edit: By definition, static methods can be called without any instantiated object, and thus there is no meaningful use of $this inside a static method.

What is Self in OOP?

In many object-oriented programming languages, this (also called self or Me ) is a variable that is used in instance methods to refer to the object on which they are working. ... Some languages require it explicitly; others use lexical scoping to use it implicitly to make symbols within their class visible.

What is __ init __ Python?

__init__ :

"__init__" is a reseved method in python classes. It is known as a constructor in object oriented concepts. This method called when an object is created from the class and it allow the class to initialize the attributes of a class.

What's the difference between == and === PHP?

Difference between == and ===

Two of the many comparison operators used by PHP are '==' (i.e. equal) and '===' (i.e. identical). The difference between the two is that '==' should be used to check if the values of the two operands are equal or not.

Why is var self this?

Actually self is a reference to window ( window. self ) therefore when you say var self = 'something' you override a window reference to itself - because self exist in window object. As mentioned several times above, 'self' is simply being used to keep a reference to 'this' prior to entering the funcition.

What are the PHP operators?

PHP Operators

• Arithmetic operators.
• Assignment operators.
• Comparison operators.
• Increment/Decrement operators.
• Logical operators.
• String operators.
• Array operators.
• Conditional assignment operators.

What's so bad about PHP?

People always complain about how PHP is insecure, but the truth is bad programming = bad programming. ... In PHP you'll create a security leak when you forget to sanitize your output, something even the most experience developer will do once in a while, let alone the large percentage of bad PHP programmers out there.

Are PHP files dangerous?

Every professional PHP developer knows that files uploaded by users are extremely dangerous. They can be used by attacker at backend as well as at frontend.

Is PHP a dead language?

PHP isn't quite dead, but it isn't fully alive either — not in an independent manner like JavaScript is currently in the development ecosystem. The server-side language's relationship with WordPress is an intimate one and rests on the platform's long-term uptake by general users.