Abstract Class yii\base\ErrorHandler

Inheritanceyii\base\ErrorHandler » yii\base\Component » yii\base\Object
Implementsyii\base\Configurable
Subclassesyii\console\ErrorHandler, yii\web\ErrorHandler
Available since version2.0
Source Code https://github.com/yiisoft/yii2/blob/master/framework/base/ErrorHandler.php

ErrorHandler handles uncaught PHP errors and exceptions.

ErrorHandler is configured as an application component in yii\base\Application by default. You can access that instance via Yii::$app->errorHandler.

For more details and usage information on ErrorHandler, see the guide article on handling errors.

Public Properties

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PropertyTypeDescriptionDefined By
$behaviors yii\base\Behavior[] List of behaviors attached to this component yii\base\Component
$discardExistingOutput boolean Whether to discard any existing page output before error display. yii\base\ErrorHandler
$exception Exception The exception that is being handled currently. yii\base\ErrorHandler
$memoryReserveSize integer The size of the reserved memory. yii\base\ErrorHandler

Public Methods

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MethodDescriptionDefined By
__call() Calls the named method which is not a class method. yii\base\Object
__clone() This method is called after the object is created by cloning an existing one. yii\base\Component
__construct() Constructor. yii\base\Object
__get() Returns the value of an object property. yii\base\Object
__isset() Checks if a property is set, i.e. defined and not null. yii\base\Object
__set() Sets value of an object property. yii\base\Object
__unset() Sets an object property to null. yii\base\Object
attachBehavior() Attaches a behavior to this component. yii\base\Component
attachBehaviors() Attaches a list of behaviors to the component. yii\base\Component
behaviors() Returns a list of behaviors that this component should behave as. yii\base\Component
canGetProperty() Returns a value indicating whether a property can be read. yii\base\Object
canSetProperty() Returns a value indicating whether a property can be set. yii\base\Object
className() Returns the fully qualified name of this class. yii\base\Object
clearOutput() Removes all output echoed before calling this method. yii\base\ErrorHandler
convertExceptionToError() Converts an exception into a PHP error. yii\base\ErrorHandler
convertExceptionToString() Converts an exception into a simple string. yii\base\ErrorHandler
detachBehavior() Detaches a behavior from the component. yii\base\Component
detachBehaviors() Detaches all behaviors from the component. yii\base\Component
ensureBehaviors() Makes sure that the behaviors declared in behaviors() are attached to this component. yii\base\Component
getBehavior() Returns the named behavior object. yii\base\Component
getBehaviors() Returns all behaviors attached to this component. yii\base\Component
handleError() Handles PHP execution errors such as warnings and notices. yii\base\ErrorHandler
handleException() Handles uncaught PHP exceptions. yii\base\ErrorHandler
handleFatalError() Handles fatal PHP errors yii\base\ErrorHandler
handleHhvmError() Handles HHVM execution errors such as warnings and notices. yii\base\ErrorHandler
hasEventHandlers() Returns a value indicating whether there is any handler attached to the named event. yii\base\Component
hasMethod() Returns a value indicating whether a method is defined. yii\base\Object
hasProperty() Returns a value indicating whether a property is defined. yii\base\Object
init() Initializes the object. yii\base\Object
logException() Logs the given exception yii\base\ErrorHandler
off() Detaches an existing event handler from this component. yii\base\Component
on() Attaches an event handler to an event. yii\base\Component
register() Register this error handler yii\base\ErrorHandler
trigger() Triggers an event. yii\base\Component
unregister() Unregisters this error handler by restoring the PHP error and exception handlers. yii\base\ErrorHandler

Protected Methods

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MethodDescriptionDefined By
handleFallbackExceptionMessage() Handles exception thrown during exception processing in handleException(). yii\base\ErrorHandler
renderException() Renders the exception. yii\base\ErrorHandler

Property Details

$discardExistingOutput public property

Whether to discard any existing page output before error display. Defaults to true.

$exception public property

The exception that is being handled currently.

public Exception $exception null
$memoryReserveSize public property

The size of the reserved memory. A portion of memory is pre-allocated so that when an out-of-memory issue occurs, the error handler is able to handle the error with the help of this reserved memory. If you set this value to be 0, no memory will be reserved. Defaults to 256KB.

public integer $memoryReserveSize 262144

Method Details

clearOutput() public method

Removes all output echoed before calling this method.

public void clearOutput ( )
convertExceptionToError() public static method

Converts an exception into a PHP error.

This method can be used to convert exceptions inside of methods like __toString() to PHP errors because exceptions cannot be thrown inside of them.

public static void convertExceptionToError ( $exception )
$exception Exception

The exception to convert to a PHP error.

convertExceptionToString() public static method

Converts an exception into a simple string.

public static string convertExceptionToString ( $exception )
$exception Exception|\Error

The exception being converted

return string

The string representation of the exception.

handleError() public method

Handles PHP execution errors such as warnings and notices.

This method is used as a PHP error handler. It will simply raise an yii\base\ErrorException.

public boolean handleError ( $code, $message, $file, $line )
$code integer

The level of the error raised.

$message string

The error message.

$file string

The filename that the error was raised in.

$line integer

The line number the error was raised at.

return boolean

Whether the normal error handler continues.

throws yii\base\ErrorException
handleException() public method

Handles uncaught PHP exceptions.

This method is implemented as a PHP exception handler.

public void handleException ( $exception )
$exception Exception

The exception that is not caught

handleFallbackExceptionMessage() protected method (available since version 2.0.11)

Handles exception thrown during exception processing in handleException().

protected void handleFallbackExceptionMessage ( $exception, $previousException )
$exception Exception|\Throwable

Exception that was thrown during main exception processing.

$previousException Exception

Main exception processed in handleException().

handleFatalError() public method

Handles fatal PHP errors

public void handleFatalError ( )
handleHhvmError() public method (available since version 2.0.6)

Handles HHVM execution errors such as warnings and notices.

This method is used as a HHVM error handler. It will store exception that will be used in fatal error handler

public boolean handleHhvmError ( $code, $message, $file, $line, $context, $backtrace )
$code integer

The level of the error raised.

$message string

The error message.

$file string

The filename that the error was raised in.

$line integer

The line number the error was raised at.

$context mixed
$backtrace mixed

Trace of error

return boolean

Whether the normal error handler continues.

throws yii\base\ErrorException
logException() public method (available since version 2.0.3)

Logs the given exception

public void logException ( $exception )
$exception Exception

The exception to be logged

register() public method

Register this error handler

public void register ( )
renderException() protected abstract method

Renders the exception.

protected abstract void renderException ( $exception )
$exception Exception

The exception to be rendered.

unregister() public method

Unregisters this error handler by restoring the PHP error and exception handlers.

public void unregister ( )