A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_URI::$config is deprecated
Filename: core/URI.php
Line Number: 101
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Router::$uri is deprecated
Filename: core/Router.php
Line Number: 127
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$benchmark is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$hooks is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$config is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$log is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$utf8 is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$uri is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$exceptions is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$router is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$output is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$security is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$input is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$lang is deprecated
Filename: core/Controller.php
Line Number: 82
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$db is deprecated
Filename: core/Loader.php
Line Number: 396
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_DB_mysqli_driver::$failover is deprecated
Filename: database/DB_driver.php
Line Number: 371
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: Trying to access array offset on true
Filename: libraries/Email.php
Line Number: 978
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$email is deprecated
Filename: core/Loader.php
Line Number: 1283
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 295
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 169
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 238
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 318
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
Filename: drivers/Session_files_driver.php
Line Number: 359
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 282
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: session_set_cookie_params(): Session cookie parameters cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 289
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 304
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 314
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 315
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 316
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 317
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: ini_set(): Session ini settings cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 375
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: session_set_save_handler(): Session save handler cannot be changed after headers have already been sent
Filename: Session/Session.php
Line Number: 110
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: Warning
Message: session_start(): Session cannot be started after headers have already been sent
Filename: Session/Session.php
Line Number: 143
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$session is deprecated
Filename: core/Loader.php
Line Number: 1283
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property Blogs::$user_model is deprecated
Filename: core/Loader.php
Line Number: 358
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/User.php
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$load is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$pgmodule is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$benchmark is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$hooks is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$config is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$log is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$utf8 is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$uri is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$exceptions is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$router is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$output is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$security is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$input is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$lang is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$db is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$email is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$session is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
A PHP Error was encountered
Severity: 8192
Message: Creation of dynamic property CI_Loader::$user_model is deprecated
Filename: core/Loader.php
Line Number: 931
Backtrace:
File: /home1/biognosy/skmlhometuitions.in/application/controllers/Blogs.php
File: /home1/biognosy/skmlhometuitions.in/index.php
Constants in JavaScript | Post Details - SKML Home Tuitions
Constants in JavaScript
To declare a constant (unchanging) variable, use const:
const myBirthday = '18.04.1982';
Variables declared using const are called “constants”. They cannot be reassigned. An attempt to do so would cause an error:
const myBirthday = '18.04.1982';
myBirthday = '01.01.2001'; // error, can't reassign the constant!
When a programmer is sure that a variable will never change, they can declare it with const to guarantee and clearly communicate that fact to everyone.
Uppercase constants
There is a widespread practice to use constants as aliases for difficult-to-remember values that are known prior to execution.
Such constants are named using capital letters and underscores.
For instance, let’s make constants for colors in so-called “web” (hexadecimal) format:
const COLOR_RED = "#F00";
const COLOR_GREEN = "#0F0";
const COLOR_BLUE = "#00F";
const COLOR_ORANGE = "#FF7F00";
// ...when we need to pick a color
let color = COLOR_ORANGE;
alert(color); // #FF7F00
Benefits:
COLOR_ORANGE is much easier to remember than "#FF7F00".
It is much easier to mistype "#FF7F00" than COLOR_ORANGE.
When reading the code, COLOR_ORANGE is much more meaningful than #FF7F00.
When should we use capitals for a constant and when should we name it normally? Let’s make that clear.
Being a “constant” just means that a variable’s value never changes. But there are constants that are known prior to execution (like a hexadecimal value for red) and there are constants that are calculated in run-time, during the execution, but do not change after their initial assignment.
For instance:
const pageLoadTime = /* time taken by a webpage to load */;
The value of pageLoadTime is not known prior to the page load, so it’s named normally. But it’s still a constant because it doesn’t change after assignment.
In other words, capital-named constants are only used as aliases for “hard-coded” values.
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