PHP Throwable interface

Introduction

In PHP 7, the Throwable interface acts as any object that can be used as a parameter for a throw statement The basis, including errors and exceptions. Both the Error and Exception classes (from which predefined and user-defined error and exception classes are derived, respectively) implement the Throwable interface. The following abstract methods are defined in the Throwable interface -

Syntax

Throwable {
   /* Methods */
   abstract public getMessage ( void ) : string
   abstract public getCode ( void ) : int
   abstract public getFile ( void ) : string
   abstract public getLine ( void ) : int
   abstract public getTrace ( void ) : array
   abstract public getTraceAsString ( void ) : string
   abstract public getPrevious ( void ) : Throwable
   abstract public __toString ( void ) : string
}

Method

getMessage (void) - string -> Return and throw objects associated messages.

getCode (void) - int -> Returns the error code associated with the thrown object.

getFile ( void ) − string -> Gets the name of the file where the thrown object is created.

getLine ( void ) − int -> Returns the line number where the thrown object is instantiated.

getTrace ( void ) − array -> Returns the stack trace as an array.

getTraceAsString ( void ) − string -> Returns the stack trace as a string.

getPrevious ( void ) - Throwable -> Returns any previous Throwable (supplied as the third argument to Exception::__construct()).

__toString ( void ) − string -> Get the string representation of the thrown object

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