#php

PHP is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into …

PHP is partially case-sensitive. Variable names are case-sensitive, but function names, class names, and keywords (like if, else, while) ar…

echo can take multiple parameters and has no return value, while print takes one argument and always returns 1.

Magic methods are special methods that override PHP's default action when certain actions are performed on an object (e.g., __construct, __…

No, PHP does not support multiple inheritance directly. However, it uses Traits to achieve similar functionality.

An interface only defines method signatures, while an abstract class can contain both method signatures and implemented methods.

The final keyword prevents child classes from overriding a method or prevents a class from being inherited.

PEAR (PHP Extension and Application Repository) is a framework and distribution system for reusable PHP components.

PHP is used for server-side scripting, command-line scripting, and creating desktop applications.

Variables are declared using a dollar sign ($) followed by the variable name (e.g., $variable_name = value;).

PHP supports String, Integer, Float, Boolean, Array, Object, NULL, and Resource.

The count() function returns the number of elements in an array or the number of properties in an object.

GET sends data through the URL (visible), while POST sends data through the HTTP body (hidden).

Using the mysqli extension or PDO (PHP Data Objects).

It starts a new session or resumes an existing one based on a session identifier passed via a GET or POST request, or a cookie.

Use session_destroy() to delete all session data, often preceded by session_unset().

If a file is missing, include produces a warning and continues execution, while require produces a fatal error and stops execution.

Notice, Warning, Fatal Error, and Parse Error.

It is used to send raw HTTP headers to a client (e.g., for redirection).

Traits are a mechanism for code reuse in single inheritance languages like PHP.