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Ask QuestionTraits are a mechanism for code reuse in single inheritance languages like PHP.
It is used to send raw HTTP headers to a client (e.g., for redirection).
Notice, Warning, Fatal Error, and Parse Error.
If a file is missing, include produces a warning and continues execution, while require produces a fatal error and stops execution.
Use session_destroy() to delete all session data, often preceded by session_unset().
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.
Using the mysqli extension or PDO (PHP Data Objects).
GET sends data through the URL (visible), while POST sends data through the HTTP body (hidden).
The count() function returns the number of elements in an array or the number of properties in an object.
PHP supports String, Integer, Float, Boolean, Array, Object, NULL, and Resource.
Variables are declared using a dollar sign ($) followed by the variable name (e.g., $variable_name = value;).
PHP is used for server-side scripting, command-line scripting, and creating desktop applications.
Static websites show the same content to every visitor, while dynamic websites generate content on the fly, often using a database.
PEAR (PHP Extension and Application Repository) is a framework and distribution system for reusable PHP components.
The final keyword prevents child classes from overriding a method or prevents a class from being inherited.
An interface only defines method signatures, while an abstract class can contain both method signatures and implemented methods.
No, PHP does not support multiple inheritance directly. However, it uses Traits to achieve similar functionality.
Magic methods are special methods that override PHP's default action when certain actions are performed on an object (e.g., __construct, __…
echo can take multiple parameters and has no return value, while print takes one argument and always returns 1.
PHP is partially case-sensitive. Variable names are case-sensitive, but function names, class names, and keywords (like if, else, while) ar…