Used ternary operator instead of "or" for constant definition

apps/advanced/backend/tests/_bootstrap.php

@@ -2,14 +2,14 @@
 
 // the entry script URL (without host info) for functional and acceptance tests
 // PLEASE ADJUST IT TO THE ACTUAL ENTRY SCRIPT URL
-defined('TEST_ENTRY_URL') or define('TEST_ENTRY_URL', '/backend/web/index-test.php');
+defined('TEST_ENTRY_URL') ?: define('TEST_ENTRY_URL', '/backend/web/index-test.php');
 
 // the entry script file path for functional and acceptance tests
-defined('TEST_ENTRY_FILE') or define('TEST_ENTRY_FILE', dirname(__DIR__) . '/web/index-test.php');
+defined('TEST_ENTRY_FILE') ?: define('TEST_ENTRY_FILE', dirname(__DIR__) . '/web/index-test.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 

apps/advanced/backend/tests/_console.php

@@ -8,12 +8,12 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 require_once(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');
 require_once(__DIR__ . '/../../common/config/aliases.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');

apps/advanced/backend/tests/acceptance/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/backend/tests/functional/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/backend/tests/unit/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/common/tests/_bootstrap.php

@@ -2,14 +2,14 @@
 
 // the entry script URL (without host info) for functional and acceptance tests
 // PLEASE ADJUST IT TO THE ACTUAL ENTRY SCRIPT URL
-defined('TEST_ENTRY_URL') or define('TEST_ENTRY_URL', '/index-test.php');
+defined('TEST_ENTRY_URL') ?: define('TEST_ENTRY_URL', '/index-test.php');
 
 // the entry script file path for functional and acceptance tests
-defined('TEST_ENTRY_FILE') or define('TEST_ENTRY_FILE', dirname(__DIR__) . '/index-test.php');
+defined('TEST_ENTRY_FILE') ?: define('TEST_ENTRY_FILE', dirname(__DIR__) . '/index-test.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 

apps/advanced/common/tests/_console.php

@@ -8,12 +8,12 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 require_once(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');
 require_once(__DIR__ . '/../../common/config/aliases.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');

apps/advanced/common/tests/unit/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/console/tests/_bootstrap.php

@@ -2,14 +2,14 @@
 
 // the entry script URL (without host info) for functional and acceptance tests
 // PLEASE ADJUST IT TO THE ACTUAL ENTRY SCRIPT URL
-defined('TEST_ENTRY_URL') or define('TEST_ENTRY_URL', '/index-test.php');
+defined('TEST_ENTRY_URL') ?: define('TEST_ENTRY_URL', '/index-test.php');
 
 // the entry script file path for functional and acceptance tests
-defined('TEST_ENTRY_FILE') or define('TEST_ENTRY_FILE', dirname(__DIR__) . '/index-test.php');
+defined('TEST_ENTRY_FILE') ?: define('TEST_ENTRY_FILE', dirname(__DIR__) . '/index-test.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 

apps/advanced/console/tests/_console.php

@@ -8,12 +8,12 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 require_once(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');
 require_once(__DIR__ . '/../../common/config/aliases.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');

apps/advanced/console/tests/unit/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/environments/dev/backend/web/index-test.php

@@ -5,8 +5,8 @@ if (!in_array(@$_SERVER['REMOTE_ADDR'], ['127.0.0.1', '::1'])) {
 	die('You are not allowed to access this file.');
 }
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require(__DIR__ . '/../../vendor/autoload.php');
 require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/dev/backend/web/index.php

 <?php
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'dev');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'dev');
 
 require(__DIR__ . '/../../vendor/autoload.php');
 require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/dev/frontend/web/index-test.php

@@ -5,8 +5,8 @@ if (!in_array(@$_SERVER['REMOTE_ADDR'], ['127.0.0.1', '::1'])) {
 	die('You are not allowed to access this file.');
 }
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require(__DIR__ . '/../../vendor/autoload.php');
 require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/dev/frontend/web/index.php

 <?php
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'dev');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'dev');
 
 require(__DIR__ . '/../../vendor/autoload.php');
 require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/dev/yii

@@ -8,12 +8,12 @@
  * @license http://www.yiiframework.com/license/
  */
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'dev');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'dev');
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/vendor/autoload.php');
 require(__DIR__ . '/vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/prod/backend/web/index.php

 <?php
-defined('YII_DEBUG') or define('YII_DEBUG', false);
-defined('YII_ENV') or define('YII_ENV', 'prod');
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
+defined('YII_ENV') ?: define('YII_ENV', 'prod');
 
 require(__DIR__ . '/../../vendor/autoload.php');
 require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/prod/frontend/web/index.php

 <?php
-defined('YII_DEBUG') or define('YII_DEBUG', false);
-defined('YII_ENV') or define('YII_ENV', 'prod');
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
+defined('YII_ENV') ?: define('YII_ENV', 'prod');
 
 require(__DIR__ . '/../../vendor/autoload.php');
 require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

apps/advanced/environments/prod/yii

@@ -8,12 +8,12 @@
  * @license http://www.yiiframework.com/license/
  */
 
-defined('YII_DEBUG') or define('YII_DEBUG', false);
-defined('YII_ENV') or define('YII_ENV', 'prod');
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
+defined('YII_ENV') ?: define('YII_ENV', 'prod');
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/vendor/autoload.php');
 require(__DIR__ . '/vendor/yiisoft/yii2/Yii.php');

apps/advanced/frontend/tests/_bootstrap.php

@@ -2,14 +2,14 @@
 
 // the entry script URL (without host info) for functional and acceptance tests
 // PLEASE ADJUST IT TO THE ACTUAL ENTRY SCRIPT URL
-defined('TEST_ENTRY_URL') or define('TEST_ENTRY_URL', '/frontend/web/index-test.php');
+defined('TEST_ENTRY_URL') ?: define('TEST_ENTRY_URL', '/frontend/web/index-test.php');
 
 // the entry script file path for functional and acceptance tests
-defined('TEST_ENTRY_FILE') or define('TEST_ENTRY_FILE', dirname(__DIR__) . '/web/index-test.php');
+defined('TEST_ENTRY_FILE') ?: define('TEST_ENTRY_FILE', dirname(__DIR__) . '/web/index-test.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 

apps/advanced/frontend/tests/_console.php

@@ -8,12 +8,12 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../../vendor/autoload.php');
 require_once(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');
 require_once(__DIR__ . '/../../common/config/aliases.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');

apps/advanced/frontend/tests/acceptance/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/frontend/tests/functional/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/advanced/frontend/tests/unit/yii

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require_once(__DIR__ . '/../_console.php');
 

apps/basic/tests/_bootstrap.php

@@ -2,14 +2,14 @@
 
 // the entry script URL (without host info) for functional and acceptance tests
 // PLEASE ADJUST IT TO THE ACTUAL ENTRY SCRIPT URL
-defined('TEST_ENTRY_URL') or define('TEST_ENTRY_URL', '/basic/web/index-test.php');
+defined('TEST_ENTRY_URL') ?: define('TEST_ENTRY_URL', '/basic/web/index-test.php');
 
 // the entry script file path for functional and acceptance tests
-defined('TEST_ENTRY_FILE') or define('TEST_ENTRY_FILE', dirname(__DIR__) . '/web/index-test.php');
+defined('TEST_ENTRY_FILE') ?: define('TEST_ENTRY_FILE', dirname(__DIR__) . '/web/index-test.php');
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require_once(__DIR__ . '/../vendor/autoload.php');
 

apps/basic/tests/_console_bootstrap.php

 <?php
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/../vendor/autoload.php');
 require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');

apps/basic/web/index-test.php

@@ -5,8 +5,8 @@ if (!in_array(@$_SERVER['REMOTE_ADDR'], ['127.0.0.1', '::1'])) {
 	die('You are not allowed to access this file.');
 }
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'test');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'test');
 
 require(__DIR__ . '/../vendor/autoload.php');
 require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');

apps/basic/web/index.php

 <?php
 
 // comment out the following two lines when deployed to production
-defined('YII_DEBUG') or define('YII_DEBUG', true);
-defined('YII_ENV') or define('YII_ENV', 'dev');
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
+defined('YII_ENV') ?: define('YII_ENV', 'dev');
 
 require(__DIR__ . '/../vendor/autoload.php');
 require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');

apps/basic/yii

@@ -8,11 +8,11 @@
  * @license http://www.yiiframework.com/license/
  */
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/vendor/autoload.php');
 require(__DIR__ . '/vendor/yiisoft/yii2/Yii.php');

apps/benchmark/index.php

 <?php
 
-defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
 
 require(__DIR__ . '/protected/vendor/yiisoft/yii2/Yii.php');
 

build/build

@@ -9,8 +9,8 @@
  */
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 define('YII_DEBUG', true);
 

docs/guide/configuration.md

@@ -24,14 +24,14 @@ Like any resource in your Yii application, the bootstrap file can be edited to f
 The default bootstrap structure sets `YII_DEBUG` to `false` if not defined:
 
 ```php
-defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
 ```
 
 During development, you can change this to `true`:
 
 ```php
 define('YII_DEBUG', true); // Development only 
-defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
 ```
 
 Configuring the application instance

docs/guide/console.md

@@ -40,11 +40,11 @@ code like the following:
  * @license http://www.yiiframework.com/license/
  */
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/vendor/autoload.php');
 require(__DIR__ . '/vendor/yiisoft/yii2/Yii.php');

docs/guide/module-debug.md

@@ -76,7 +76,7 @@ return [
 By default it's automatically set to `3` if Yii is run in debug mode i.e. your `index.php` file contains the following:
 
 ```php
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 ```
 
 > Note: Make sure to disable debug mode on production since it may have significan performance effect and expose sensible

docs/guide/performance.md

@@ -28,7 +28,7 @@ is to disable debug mode. A Yii application runs in debug mode if the constant
 should be in your `index.php`:
 
 ```php
-defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
 ```
 
 Debug mode is very useful during development stage, but it would impact performance

extensions/apidoc/apidoc

@@ -8,7 +8,7 @@
  * @license http://www.yiiframework.com/license/
  */
 
-defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
 
 $composerAutoload = [
 	__DIR__ . '/vendor/autoload.php', // standalone with "composer install" run

framework/BaseYii.php

@@ -14,37 +14,37 @@ use yii\log\Logger;
 /**
  * Gets the application start timestamp.
  */
-defined('YII_BEGIN_TIME') or define('YII_BEGIN_TIME', microtime(true));
+defined('YII_BEGIN_TIME') ?: define('YII_BEGIN_TIME', microtime(true));
 /**
  * This constant defines the framework installation directory.
  */
-defined('YII_PATH') or define('YII_PATH', __DIR__);
+defined('YII_PATH') ?: define('YII_PATH', __DIR__);
 /**
  * This constant defines whether the application should be in debug mode or not. Defaults to false.
  */
-defined('YII_DEBUG') or define('YII_DEBUG', false);
+defined('YII_DEBUG') ?: define('YII_DEBUG', false);
 /**
  * This constant defines in which environment the application is running. Defaults to 'prod', meaning production environment.
  * You may define this constant in the bootstrap script. The value could be 'prod' (production), 'dev' (development), 'test', 'staging', etc.
  */
-defined('YII_ENV') or define('YII_ENV', 'prod');
+defined('YII_ENV') ?: define('YII_ENV', 'prod');
 /**
  * Whether the the application is running in production environment
  */
-defined('YII_ENV_PROD') or define('YII_ENV_PROD', YII_ENV === 'prod');
+defined('YII_ENV_PROD') ?: define('YII_ENV_PROD', YII_ENV === 'prod');
 /**
  * Whether the the application is running in development environment
  */
-defined('YII_ENV_DEV') or define('YII_ENV_DEV', YII_ENV === 'dev');
+defined('YII_ENV_DEV') ?: define('YII_ENV_DEV', YII_ENV === 'dev');
 /**
  * Whether the the application is running in testing environment
  */
-defined('YII_ENV_TEST') or define('YII_ENV_TEST', YII_ENV === 'test');
+defined('YII_ENV_TEST') ?: define('YII_ENV_TEST', YII_ENV === 'test');
 
 /**
  * This constant defines whether error handling should be enabled. Defaults to true.
  */
-defined('YII_ENABLE_ERROR_HANDLER') or define('YII_ENABLE_ERROR_HANDLER', true);
+defined('YII_ENABLE_ERROR_HANDLER') ?: define('YII_ENABLE_ERROR_HANDLER', true);
 
 
 /**

framework/yii

@@ -8,11 +8,11 @@
  * @license http://www.yiiframework.com/license/
  */
 
-defined('YII_DEBUG') or define('YII_DEBUG', true);
+defined('YII_DEBUG') ?: define('YII_DEBUG', true);
 
 // fcgi doesn't have STDIN and STDOUT defined by default
-defined('STDIN') or define('STDIN', fopen('php://stdin', 'r'));
-defined('STDOUT') or define('STDOUT', fopen('php://stdout', 'w'));
+defined('STDIN') ?: define('STDIN', fopen('php://stdin', 'r'));
+defined('STDOUT') ?: define('STDOUT', fopen('php://stdout', 'w'));
 
 require(__DIR__ . '/Yii.php');