Turn on logging for deprecation notices by default

app/Config/Exceptions.php

@@ -60,13 +60,13 @@ class Exceptions extends BaseConfig
      * Use this option to temporarily cease the warnings and instead log those.
      * This option also works for user deprecations.
      */
-    public bool $logDeprecationsOnly = false;
+    public bool $logDeprecations = true;
 
     /**
      * --------------------------------------------------------------------------
      * LOG LEVEL THRESHOLD FOR DEPRECATIONS
      * --------------------------------------------------------------------------
-     * If `$logDeprecationsOnly` is set to `true`, this sets the log level
+     * If `$logDeprecations` is set to `true`, this sets the log level
      * to which the deprecation will be logged. This should be one of the log
      * levels recognized by PSR-3.
      *

app/Config/Logger.php

@@ -38,7 +38,7 @@ class Logger extends BaseConfig
      *
      * @var array|int
      */
-    public $threshold = 4;
+    public $threshold = (ENVIRONMENT === 'production') ? 4 : 9;
 
     /**
      * --------------------------------------------------------------------------

phpunit.xml.dist

@@ -71,6 +71,7 @@
 
     <php>
         <server name="app.baseURL" value="http://example.com/"/>
+        <server name="CODEIGNITER_SCREAM_DEPRECATIONS" value="1"/>
         <!-- Directory containing phpunit.xml -->
         <const name="HOMEPATH" value="./"/>
         <!-- Directory containing the Paths config file -->

system/Debug/Exceptions.php

@@ -83,8 +83,8 @@ public function __construct(ExceptionsConfig $config, $request, ResponseInterfac
         if (! isset($this->config->sensitiveDataInTrace)) {
             $this->config->sensitiveDataInTrace = [];
         }
-        if (! isset($this->config->logDeprecationsOnly, $this->config->deprecationLogLevel)) {
-            $this->config->logDeprecationsOnly = false;
+        if (! isset($this->config->logDeprecations, $this->config->deprecationLogLevel)) {
+            $this->config->logDeprecations     = false;
             $this->config->deprecationLogLevel = LogLevel::WARNING;
         }
     }
@@ -158,17 +158,20 @@ public function exceptionHandler(Throwable $exception)
      */
     public function errorHandler(int $severity, string $message, ?string $file = null, ?int $line = null)
     {
-        if ($this->isDeprecationError($severity) && $this->config->logDeprecationsOnly) {
-            return $this->handleDeprecationError($message, $file, $line);
-        }
-
-        if (error_reporting() & $severity) {
+        if ($this->isDeprecationError($severity)) {
             // @TODO Remove if Faker is fixed.
-            if ($this->isFakerDeprecationError($severity, $message, $file, $line)) {
-                // Ignore the error.
+            if ($this->isFakerDeprecationError($message, $file, $line)) {
                 return true;
             }
 
+            if (! $this->config->logDeprecations || (bool) env('CODEIGNITER_SCREAM_DEPRECATIONS')) {
+                throw new ErrorException($message, 0, $severity, $file, $line);
+            }
+
+            return $this->handleDeprecationError($message, $file, $line);
+        }
+
+        if (error_reporting() & $severity) {
             throw new ErrorException($message, 0, $severity, $file, $line);
         }
 
@@ -180,11 +183,10 @@ public function errorHandler(int $severity, string $message, ?string $file = nul
      *
      * @see https://github.com/FakerPHP/Faker/issues/479
      */
-    private function isFakerDeprecationError(int $severity, string $message, ?string $file = null, ?int $line = null)
+    private function isFakerDeprecationError(string $message, ?string $file = null, ?int $line = null)
     {
         if (
-            $severity === E_DEPRECATED
-            && strpos($file, VENDORPATH . 'fakerphp/faker/') !== false
+            strpos($file, VENDORPATH . 'fakerphp/faker/') !== false
             && $message === 'Use of "static" in callables is deprecated'
         ) {
             log_message(

tests/system/Debug/ExceptionsTest.php

@@ -31,6 +31,20 @@ final class ExceptionsTest extends CIUnitTestCase
 
     private \CodeIgniter\Debug\Exceptions $exception;
 
+    public static function setUpBeforeClass(): void
+    {
+        parent::setUpBeforeClass();
+
+        unset($_SERVER['CODEIGNITER_SCREAM_DEPRECATIONS']);
+    }
+
+    public static function tearDownAfterClass(): void
+    {
+        parent::tearDownAfterClass();
+
+        $_SERVER['CODEIGNITER_SCREAM_DEPRECATIONS'] = '1';
+    }
+
     protected function setUp(): void
     {
         parent::setUp();
@@ -45,7 +59,7 @@ public function testDeprecationsOnPhp81DoNotThrow(): void
     {
         $config = new ExceptionsConfig();
 
-        $config->logDeprecationsOnly = true;
+        $config->logDeprecations     = true;
         $config->deprecationLogLevel = 'error';
 
         $this->exception = new Exceptions($config, Services::request(), Services::response());
@@ -69,7 +83,7 @@ public function testSuppressedDeprecationsAreLogged(): void
     {
         $config = new ExceptionsConfig();
 
-        $config->logDeprecationsOnly = true;
+        $config->logDeprecations     = true;
         $config->deprecationLogLevel = 'error';
 
         $this->exception = new Exceptions($config, Services::request(), Services::response());

user_guide_src/source/changelogs/v4.3.0.rst

@@ -221,7 +221,10 @@ Helpers and Functions
 Error Handling
 ==============
 
-- You can now log deprecation errors instead of throwing them. See :ref:`logging_deprecation_errors` for details.
+- You can now log deprecation warnings instead of throwing exceptions. See :ref:`logging_deprecation_warnings` for details.
+- Logging of deprecations is turned on by default.
+- To *temporarily* enable throwing of deprecations, set the environment variable ``CODEIGNITER_SCREAM_DEPRECATIONS`` to a truthy value.
+- ``Config\Logger::$threshold`` is now, by default, environment-specific. For production environment, default threshold is still ``4`` but changed to ``9`` for other environments.
 
 Others
 ======
@@ -270,4 +273,3 @@ Bugs Fixed
 **********
 
 - Fixed a bug when all types of ``Prepared Queries`` were returning a ``Result`` object instead of a bool value for write-type queries.
-

user_guide_src/source/general/errors.rst

@@ -134,10 +134,10 @@ Since v4.3.0, you can specify the exit code for your Exception class to implemen
 
 When an exception implementing ``HasExitCodeInterface`` is caught by CodeIgniter's exception handler, the code returned from the ``getExitCode()`` method will become the exit code.
 
-.. _logging_deprecation_errors:
+.. _logging_deprecation_warnings:
 
-Logging Deprecation Errors
-==========================
+Logging Deprecation Warnings
+============================
 
 .. versionadded:: 4.3.0
 
@@ -161,3 +161,6 @@ After that, subsequent deprecations will be logged instead of thrown.
 This feature also works with user deprecations:
 
 .. literalinclude:: errors/014.php
+
+For testing your application you may want to always throw on deprecations. You may configure this by
+setting the environment variable ``CODEIGNITER_SCREAM_DEPRECATIONS`` to a truthy value.

user_guide_src/source/general/errors/012.php

@@ -9,6 +9,6 @@ class Exceptions extends BaseConfig
 {
     // ... other properties
 
-    public bool $logDeprecationsOnly   = true;
+    public bool $logDeprecations       = true;
     public string $deprecationLogLevel = LogLevel::WARNING; // this should be one of the log levels supported by PSR-3
 }

user_guide_src/source/installation/upgrade_430.rst

@@ -178,7 +178,7 @@ The following files received significant changes (including deprecations or visu
 and it is recommended that you merge the updated versions with your application:
 
 * ``app/Config/Exceptions.php``
-    * Two additional public properties were added: ``$logDeprecationsOnly`` and ``$deprecationLogLevel``.
+    * Two additional public properties were added: ``$logDeprecations`` and ``$deprecationLogLevel``.
 * ``app/Config/Routes.php``
     * Due to the fact that the approach to running Spark Commands has changed, there is no longer a need to load the internal routes of the framework.