ErrorHandler

Type

Class

Namespace

craft\web

Inherits

craft\web\ErrorHandler » yii\web\ErrorHandler » yii\base\ErrorHandler » yii\base\Component » yii\base\BaseObject

Implements

yii\base\Configurable

Since

3.0.0

Class ErrorHandler

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Public Properties

Property	Description
behaviors	yii\base\Behavior – List of behaviors attached to this component.
callStackItemView	string – The path of the view file for rendering exceptions and errors call stack element.
discardExistingOutput	boolean – Whether to discard any existing page output before error display.
displayVars	array – List of the PHP predefined variables that should be displayed on the error page.
errorAction	string, null – The route (e.g. site/error) to the controller action that will be used to display external errors.
errorView	string – The path of the view file for rendering exceptions without call stack information.
exception	Throwable, null – The exception that is being handled currently.
exceptionView	string – The path of the view file for rendering exceptions.
maxSourceLines	integer – Maximum number of source code lines to be displayed.
maxTraceSourceLines	integer – Maximum number of trace source code lines to be displayed.
memoryReserveSize	integer – The size of the reserved memory.
previousExceptionView	string – The path of the view file for rendering previous exceptions.
silentExitOnException	boolean – If true - handleException() will finish script with ExitCode::OK.
traceLine	string – Trace line with placeholders to be be substituted.

Public Methods

Method	Description
__call()	Calls the named method which is not a class method.
__clone()	This method is called after the object is created by cloning an existing one.
__construct()	Constructor.
__get()	Returns the value of a component property.
__isset()	Checks if a property is set, i.e. defined and not null.
__set()	Sets the value of a component property.
__unset()	Sets a component property to be null.
addTypeLinks()	Adds informational links to the given PHP type/class.
argumentsToString()	Converts arguments array to its string representation.
attachBehavior()	Attaches a behavior to this component.
attachBehaviors()	Attaches a list of behaviors to the component.
behaviors()	Returns a list of behaviors that this component should behave as.
canGetProperty()	Returns a value indicating whether a property can be read.
canSetProperty()	Returns a value indicating whether a property can be set.
className()	Returns the fully qualified name of this class.
clearOutput()	Removes all output echoed before calling this method.
convertExceptionToError()	Converts an exception into a PHP error.
convertExceptionToString()	Converts an exception into a simple string.
convertExceptionToVerboseString()	Converts an exception into a string that has verbose information about the exception and its trace.
createFrameworkVersionLink()	Creates string containing HTML link which refers to the page with the current version of the framework and version number text.
createHttpStatusLink()	Creates HTML containing link to the page with the information on given HTTP status code.
createServerInformationLink()	Creates string containing HTML link which refers to the home page of determined web-server software and its full name.
detachBehavior()	Detaches a behavior from the component.
detachBehaviors()	Detaches all behaviors from the component.
ensureBehaviors()	Makes sure that the behaviors declared in behaviors() are attached to this component.
getBehavior()	Returns the named behavior object.
getBehaviors()	Returns all behaviors attached to this component.
getExceptionName()	Returns human-readable exception name.
handleError()	Handles PHP execution errors such as warnings and notices.
handleException()	Handles uncaught PHP exceptions.
handleFatalError()	Handles fatal PHP errors.
handleHhvmError()	Handles HHVM execution errors such as warnings and notices.
hasEventHandlers()	Returns a value indicating whether there is any handler attached to the named event.
hasMethod()	Returns a value indicating whether a method is defined.
hasProperty()	Returns a value indicating whether a property is defined for this component.
htmlEncode()	Converts special characters to HTML entities.
init()
isCoreFile()	Determines whether given name of the file belongs to the framework.
logException()	Logs the given exception.
off()	Detaches an existing event handler from this component.
on()	Attaches an event handler to an event.
register()	Register this error handler.
renderCallStack()	Renders call stack.
renderCallStackItem()	Renders a single call stack element.
renderFile()	Renders a view file as a PHP script.
renderPreviousExceptions()	Renders the previous exception stack for a given Exception.
renderRequest()	Renders the global variables of the request.
trigger()	Triggers an event.
unregister()	Unregisters this error handler by restoring the PHP error and exception handlers.

getExceptionName()

Returns human-readable exception name.

View source

Arguments

• $exception (Throwable)

Returns

string, null – Human-readable exception name or null if it cannot be determined

handleError()

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.

View source

Arguments

• $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.

Returns

boolean – Whether the normal error handler continues.

Throws

• yii\base\ErrorException

handleException()

Handles uncaught PHP exceptions.

This method is implemented as a PHP exception handler.

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Arguments

• $exception (Throwable) – The exception that is not caught

isCoreFile()

Determines whether given name of the file belongs to the framework.

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Arguments

• $file (string) – Name to be checked.

Returns

boolean – Whether given name of the file belongs to the framework.

renderCallStackItem()

Renders a single call stack element.

View source

Arguments

• $file (string, null) – Name where call has happened.
• $line (integer, null) – Number on which call has happened.
• $class (string, null) – Called class name.
• $method (string, null) – Called function/method name.
• $args (array) – Array of method arguments.
• $index (integer) – Number of the call stack element.

Returns

string – HTML content of the rendered call stack element.

Protected Methods

Method	Description
convertExceptionToArray()	Converts an exception into an array.
getTypeUrl()	Returns the informational link URL for a given PHP type/class.
handleFallbackExceptionMessage()	Handles exception thrown during exception processing in handleException().
renderException()	Renders the exception.
shouldRenderSimpleHtml()

getTypeUrl()

Returns the informational link URL for a given PHP type/class.

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Arguments

• $class (string) – The type or class name.
• $method (string, null) – The method name.

Returns

string, null – The informational link URL.

renderException()

Renders the exception.

View source

Arguments

• $exception (Throwable) – The exception to be rendered.

shouldRenderSimpleHtml()

Since

3.4.10

View source

Returns

boolean – If simple HTML should be rendered

Events

EVENT_BEFORE_HANDLE_EXCEPTION

Type

craft\events\ExceptionEvent

The event that is triggered before handling an exception.

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