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PHP Throwable interface
Introduction
In PHP 7, Throwable interface acts as base for any object that can be a parameter to throw statement, including Error and Exception. Both Error and Exception classes, from which predefined and user defined error and exception classes are derived respectively, implement Throwable interface. Following abstract methods are defined in 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
}Methods
getMessage ( void ) − string -> Returns the message associated with the thrown object.
getCode ( void ) − int -> Returns the error code associated with the thrown object.
getFile ( void ) − string -> Get the name of the file in which the thrown object was created.
getLine ( void ) − int -> Returns the line number where the thrown object was 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 (provided as third parameter to Exception::__construct()).
__toString ( void ) − string -> Gets a string representation of the thrown object
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